SEATING SYSTEM
20260047685 ยท 2026-02-19
Inventors
- Willis Jay Mullet (Gulf Breeze, FL, US)
- Richard Scott Hand (Pensacola, FL, US)
- Jacob Kubik (Pensacola, FL, US)
- Frank James Deckert (Fort Walton Beach, FL, US)
Cpc classification
International classification
Abstract
In one or more embodiments, a dining chair is provided having a frame, a seat operably connected to the frame, a backrest operably connected to the frame, a reclining mechanism, and a counterbalance assembly positioned within the backrest, among other components. The backrest is configured to move between an upright position and a reclined position. In one or more arrangements, the counterbalance assembly is configured to provide a counterbalance force to move the backrest to the upright position in absence of an opposing force.
Claims
1. A seating system, comprising: a frame; a seat; the seat operably connected to the frame; a backrest; the backrest having a hollow interior; a reclining mechanism; the reclining mechanism having a counterbalance assembly; the counterbalance assembly configured to apply a bias force to the backrest; wherein the backrest is operably connected to the frame by the reclining mechanism; wherein the reclining mechanism is configured to move the backrest between an upright position and a reclined position relative to the frame.
2. The seating system of claim 1 wherein the counterbalance assembly is positioned within the hollow interior of the backrest.
3. The seating system of claim 1 wherein the reclining mechanism is positioned within the hollow interior of the backrest.
4. The seating system of claim 1 wherein the backrest is configured to recline anywhere from 0 to 90 degrees relative to the upright position.
5. The seating system of claim 1 wherein the backrest is configured to recline anywhere from 0 to 45 degrees relative to the upright position.
6. The seating system of claim 1 wherein the backrest is configured to recline anywhere from 7 to 23 degrees relative to the upright position.
7. The seating system of claim 1 wherein the backrest is configured to recline anywhere from 9 to 18 degrees relative to the upright position.
8. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward.
9. The seating system of claim 1 wherein when the backrest is moved from the upright position to a reclining position, an upper end of the backrest moves downward and rearward.
10. The seating system of claim 1 wherein when the backrest is moved to the upright position, the upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, an upper end of the backrest moves downward and rearward; and wherein the backrest provides constant lumbar support when the backrest is moved between the upright position and the reclined position.
11. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward; and wherein the backrest provides constant lumbar support when the backrest is reclined anywhere from 7 to 23 degrees relative to the upright position.
12. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward; and while the backrest is moving, the user's back and the backrest move in unison.
13. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward; and while the backrest is moving, a point on the user's back does not move relative to a point on the backrest of the chair.
14. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward; and while the backrest is moving, a lumbar region of the user's back remains in contact with the lower end of the backrest, with relatively little or no motion between the lower end of the backrest and the lumbar region of the user's back.
15. The seating system of claim 1 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward; wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward; and while the backrest is moving, a point in the lumbar region of the user's back remains in contact with a point on the lower end of the backrest, with no relative movement between the point in the lumbar region of the user's back and the point on the lower end of the backrest.
16. The seating system of claim 1 wherein the bias force applied by the counterbalance assembly is adjustable.
17. The seating system of claim 1 wherein when the user is in a desired reclining position, a force applied by the user to the backrest is approximately equal to the bias force applied by the counterbalance assembly.
18. The seating system of claim 1 wherein when the user is in a desired reclining position, a force applied by the user to the backrest is approximately balanced with the bias force applied by the counterbalance assembly.
19. The seating system of claim 1 wherein when the user is in a desired reclining position, a net moment on the backrest is approximately zero.
20. The seating system of claim 1 wherein when the user is in a desired reclining position, the bias force applied by the counterbalance assembly keeps the backrest steady while the user is in the reclined position.
21. The seating system of claim 1 wherein when the user is in a reclining position between 7 and 23 degrees from the upright position, a force applied by the user to the backrest is approximately equal to the bias force applied by the counterbalance assembly.
22. The seating system of claim 1 wherein when the user is in a reclining position between 7 and 23 degrees from the upright position, a force applied by the user to the backrest is approximately balanced with the bias force applied by the counterbalance assembly.
23. The seating system of claim 1 wherein when the user is in a reclining position between 7 and 23 degrees from the upright position, a net moment on the backrest is approximately zero.
24. The seating system of claim 1 wherein when the user is in a reclining position between 7 and 23 degrees from the upright position, the bias force applied by the counterbalance assembly keeps the backrest steady while the user is in the reclined position.
25. The seating system of claim 1 wherein when the backrest is moved between the upright position and the reclined position, the seat remains stationary.
26. The seating system of claim 1 wherein when the backrest is moved between the upright position and the reclined position, there is no translation of the seat.
27. The seating system of claim 1 wherein when the backrest is moved between the upright position and the reclined position, there is no rotation of the seat.
28. The seating system of claim 1 wherein when the backrest is moved between the upright position and the reclined position, there is no translation or rotation of the seat.
29. A seating system, comprising: a frame; a seat; the seat operably connected to the frame; a backrest; the backrest having a rear support member and a front support member; wherein the rear support member and the front support member operably connect to form a hollow interior; a reclining mechanism; the reclining mechanism having a counterbalance assembly; the counterbalance assembly configured to apply a bias force to the backrest; wherein the backrest is operably connected to the frame by the reclining mechanism; wherein the reclining mechanism is configured to move the backrest between an upright position and a reclined position relative to the frame; wherein the counterbalance assembly is not visible from a front of the seating system, a back of the seating system, sides of the seating system, or a top of the seating system; wherein the counterbalance assembly is accessible from a bottom of the backrest; and wherein the counterbalance assembly is positioned above the bottom of the backrest.
30. The seating system of claim 29 wherein the rear support member and the front support member are removably connected.
31. The seating system of claim 29 wherein the rear support member and the front support member are operably connected via a bracket.
32. The seating system of claim 29 wherein the rear support member and the front support member are operably connected via connectors.
33. A seating system, comprising: a frame; a seat; the seat operably connected to the frame; a backrest; the backrest having a rear support member and a front support member; wherein the rear support member and the front support member operably connect to form a hollow interior; wherein a bottom of the backrest includes a recess between the rear support member and the front support member; a reclining mechanism; the reclining mechanism having a counterbalance assembly; the counterbalance assembly configured to apply a bias force to the backrest; wherein the backrest is operably connected to the frame by the reclining mechanism; wherein the reclining mechanism is configured to move the backrest between an upright position and a reclined position relative to the frame; wherein the counterbalance assembly is not visible from a front of the seating system, a back of the seating system, sides of the seating system, or a top of the seating system; wherein a portion of the counterbalance assembly is positioned in the recess between the rear support member and the front support member; and wherein the counterbalance assembly is accessible from the bottom of the backrest through the recess between the rear support member and the front support member.
34. The seating system of claim 33 wherein the rear support member and the front support member are removably connected.
35. The seating system of claim 33 wherein the rear support member and the front support member are operably connected via a bracket.
36. The seating system of claim 33 wherein the rear support member and the front support member are operably connected via connectors.
37. A seating system, comprising: a frame; a seat; the seat operably connected to the frame; a backrest; a reclining mechanism; the reclining mechanism having a counterbalance assembly; the counterbalance assembly configured to apply a bias force to the backrest; wherein the backrest is operably connected to the frame by the reclining mechanism; wherein the reclining mechanism is configured to move the backrest between an upright position and a reclined position relative to the frame; and wherein when the backrest is moved between the upright position and a reclining position, a point in the lumbar region of the user's back remains in contact with a point on the lower end of the backrest.
38. The seating system of claim 37 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward.
39. The seating system of claim 37 wherein when the backrest is moved from the upright position to a reclining position, an upper end of the backrest moves downward and rearward.
40. The seating system of claim 37 wherein when the backrest is moved to the upright position, an upper end of the backrest moves upward and forward and wherein when the backrest is moved from the upright position to a reclining position, the upper end of the backrest moves downward and rearward.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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SUMMARY OF THE DISCLOSURE
[0140] In one or more embodiments, a seating system is provided having a frame, a seat operably connected to the frame, a backrest operably connected to the frame, and a counterbalance assembly, among other components. The backrest has a hollow interior. The counterbalance assembly is positioned within the hollow interior of the backrest. The backrest is configured to move between an upright position and a reclined position relative to the frame. The counterbalance assembly is configured to provide a counterbalance force to the backrest.
[0141] In one or more arrangements, the counterbalance assembly is configured to move the backrest to the upright position in absence of an opposing force. In one or more arrangements, the counterbalance assembly includes at least one bias member.
[0142] In one or more arrangements, the backrest is operably connected to the frame by a reclining mechanism positioned within the hollow interior of the backrest and configured to move the backrest between an upright position and a reclined position relative to the frame. In one or more arrangements, the reclining mechanism includes an upper guide assembly and a lower guide assembly. In one or more arrangements, the upper guide assembly is configured to operably connect one or more upper connection points of the frame to the backrest and guide the upper connection points along a first path relative to the backrest as the backrest is moved between the upright position and the reclined position. In one or more arrangements, the lower guide assembly is configured to operably connect one or more lower connection points of the frame to the backrest and guide the lower connection points along a second path relative to the backrest as the backrest is moved between the upright position and the reclined position.
DETAILED DESCRIPTION OF THE DISCLOSURE
[0143] In the following detailed description of the embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in which the disclosure may be practiced. The embodiments of the present disclosure described below are not intended to be exhaustive or to limit the disclosure to the precise forms in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may appreciate and understand the principles and practices of the present disclosure. It will be understood by those skilled in the art that various changes in form and details may be made without departing from the principles and scope of the invention. It is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures. For instance, although aspects and features may be illustrated in or described with reference to certain figures or embodiments, it will be appreciated that features from one figure or embodiment may be combined with features of another figure or embodiment even though the combination is not explicitly shown or explicitly described as a combination. In the depicted embodiments, like reference numbers refer to like elements throughout the various drawings.
[0144] It should be understood that any advantages and/or improvements discussed herein may not be provided by various disclosed embodiments, or implementations thereof. The contemplated embodiments are not so limited and should not be interpreted as being restricted to embodiments which provide such advantages or improvements. Similarly, it should be understood that various embodiments may not address all or any objects of the disclosure or objects of the invention that may be described herein. The contemplated embodiments are not so limited and should not be interpreted as being restricted to embodiments which address such objects of the disclosure or invention. Furthermore, although some disclosed embodiments may be described relative to specific materials, embodiments are not limited to the specific materials or apparatuses but only to their specific characteristics and capabilities and other materials and apparatuses can be substituted as is well understood by those skilled in the art in view of the present disclosure.
[0145] It is to be understood that the terms such as left, right, top, bottom, front, backrest, side, height, length, width, upper, lower, interior, exterior, inner, outer, and the like as may be used herein, merely describe points of reference and do not limit the present invention to any particular orientation or configuration.
[0146] As used herein, the term or includes one or more of the associated listed items, such that A or B means either A or B. As used herein, the term and includes all combinations of one or more of the associated listed items, such that A and B means A as well as B. The use of and/or includes all combinations of one or more of the associated listed items, such that A and/or B includes A but not B, B but not A, and A as well as B, unless it is clearly indicated that only a single item, subgroup of items, or all items are present. The use of etc. is defined as et cetera and indicates the inclusion of all other elements belonging to the same group of the preceding items, in any and/or combination(s).
[0147] As used herein, the singular forms a, an, and the are intended to include both the singular and plural forms, unless the language explicitly indicates otherwise. Indefinite articles like a and an introduce or refer to any modified term, both previously-introduced and not, while definite articles like the refer to a same previously-introduced term; as such, it is understood that a or an modify items that are permitted to be previously-introduced or new, while definite articles modify an item that is the same as immediately previously presented. It will be further understood that the terms comprises, comprising, includes, and/or including, when used herein, specify the presence of stated features, characteristics, steps, operations, elements, and/or components, but do not themselves preclude the presence or addition of one or more other features, characteristics, steps, operations, elements, components, and/or groups thereof.
[0148] It will be understood that when an element is referred to as being connected, coupled, mated, attached, fixed, etc. to another element, it can be directly connected to the other element, and/or intervening elements may be present. In contrast, when an element is referred to as being directly connected, directly coupled, directly engaged etc. to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., between versus directly between, adjacent versus directly adjacent, engaged versus directly engaged, etc.). Similarly, a term such as operatively, such as when used as operatively connected or operatively engaged is to be interpreted as connected or engaged, respectively, in any manner that facilitates operation, which may include being directly connected, indirectly connected, electronically connected, wirelessly connected, or connected by any other manner, method or means that facilitates desired operation. Similarly, a term such as communicatively connected includes all variations of information exchange and routing between two electronic devices, including intermediary devices, networks, etc., connected wirelessly or not. Similarly, connected or other similar language particularly for electronic components is intended to mean connected by any means, either directly or indirectly, wired and/or wirelessly, such that electricity and/or information may be transmitted between the components.
[0149] It will be understood that, although the ordinal terms first, second, etc. may be used herein to describe various elements, these elements should not be limited to any order by these terms unless specifically stated as such. These terms are used only to distinguish one element from another; where there are second or higher ordinals, there merely must be a number of elements, without necessarily any difference or other relationship. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments or methods.
[0150] Similarly, the structures and operations discussed herein may occur out of the order described and/or noted in the figures. For example, two operations and/or figures shown in succession may in fact be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Similarly, individual operations within example methods described below may be executed repetitively, individually, or sequentially, to provide looping or other series of operations aside from single operations described below. It should be presumed that any embodiment or method having features and functionality described below, in any workable combination, falls within the scope of example embodiments.
[0151] As used herein, various disclosed embodiments may be primarily described in the context of chairs. However, the embodiments are not so limited. It is appreciated that the embodiments may be adapted for use in other applications which may be improved by the disclosed structures, arrangements and/or methods. The system is merely shown and described as being used in the context of chairs for ease of description and as one of countless examples.
System 10:
[0152] With reference to the figures, a seating system 10 (or simply system 10) is presented. The system 10 is formed of any suitable size, shape, and design and is configured to hold and support an occupant in a seated position as well as facilitate movement between an upright position and a reclined position. In the arrangement shown, as one example, system 10 includes the following component pieces: a seat 12, a backrest 14, a frame 16, and a reclining mechanism 20, among other components.
Seat 12:
[0153] Seat 12 is formed of any suitable size, shape, and design and is configured to provide a surface for seating of an occupant thereupon. In the arrangement shown, as one example, seat 12 includes a seat assembly 26 and a cushion 28 among other components. In this example arrangement, seat assembly 26 is configured to operably connect with frame 16 and support cushion 28 on a top surface of seat assembly 26.
Seat Assembly 26:
[0154] Seat assembly 26 is formed of any suitable size, shape, and design and is configured to provide a surface for seating of an occupant thereupon. In the arrangement shown, as one example, seat assembly 26 includes a lower support member 30 and an upper seat member 32.
[0155] Lower support member 30 is formed of any suitable size, shape, and design and is configured to operably connect with frame 16 and support upper seat member 32. In the arrangement shown, as one example, lower support member 30 has a generally rectangular planar shaped top 56 and bottom 58 extending between a front edge 40, a back edge 42, and opposing side edges 44.
[0156] In this example arrangement, side edges 44 curve upward from the outward and up from the generally rectangular planar shaped top 56 and bottom 58 to provide an aesthetically pleasing appearance and contain side edges of upper seat member 32 and cushion 28.
[0157] In one or more arrangements, lower support member 30 is connected to frame 16 and/or upper seat member 32 by a set of connection members 54. In some various arrangements, connection members 54 may utilize various methods and/or means to facilitate connection including but not limited to, for example, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection. In this example arrangement, lower support member 30 has contoured side portions 48 that curve upward proximate to opposing side edges 44.
[0158] Upper seat member 32 is formed of any suitable size, shape, and design and is configured to operably connect with lower support member 30 and cushion 28 and provide a surface to support cushion 28 and operably connect cushion 28 with lower support member 30. In the arrangement shown, as one example, upper seat member 32 has a generally rectangular planar shape extending between a front edge 60, a back edge 62, and opposing side edges 64.
[0159] However, the embodiments are not so limited. Rather, it is contemplated that in some various arrangements, various portions of upper seat member 32 may be contoured for comfort and/or aesthetic appearance. Furthermore, it is contemplated that in some various arrangements cushion 28 may be connected directly with lower support member 30 and upper seat member 32 may be omitted.
Cushion 28:
[0160] Cushion 28 is formed of any suitable size, shape, and design and is configured to comfortably support an occupant sitting thereon. In the arrangement shown, as one example, cushion 28 has a generally cuboid shape having a top 74, a bottom 76, and sides 78. In this example arrangement, cushion 28 includes a foam core 82 covered by upholstery material 84 on at least one side.
Foam Core 82:
[0161] Foam core 82 is formed of any suitable size, shape, and design and is configured to provide comforting support when seated upon. In one or more arrangements, as examples, foam core 82 is also configured to prevent water from becoming trapped within the foam core 82. For instance, in some various arrangements, as examples, foam core 82 may be comprised of one or more foams (e.g., reticulated foam, polyurethane foam, open cell rubber and/or any other foam material), feathers, fibers, polyester, batting and/or any other fill material for cushions.
Upholstery Material 84:
[0162] Upholstery material 84 is formed of any suitable size, shape, and design and is configured to provide a comfortable seating surface and aesthetically pleasing appearance. In some various arrangements, as examples, upholstery material 84 may include but is not limited to, for example, natural materials such as cotton, silk, wool, linen, and/or leather, or synthetic material such as polyester, polypropylene, nylon, acrylic, rayon, vinyl, and/or synthetic leathers, and/or any other upholstery material.
[0163] In one or more arrangements, bottom 76 of cushion 28 is attached to a top 56 of upper seat member 32 of seat assembly 26. It is contemplated that in various arrangements, cushion 28 may be attached to upper seat member 32 using various methods or means including but not limited to, for example, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, stitching, hook and loop connectors, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
Backrest 14:
[0164] The backrest 14 is formed of any suitable size, shape, and design and is configured to provide a surface to provide back rest support for an occupant seated on seat 12. In the arrangement shown, as one example, backrest 14 includes a backrest support assembly 100 and a cushion 106 among other components.
Backrest Support Assembly 100:
[0165] Backrest support assembly 100 is formed of any suitable size, shape, and design and is configured to provide a back rest surface for an occupant seated on seat 12. In the arrangement shown, as one example, backrest support assembly 100 includes a rear support member 102, a front support member 104, and a lower bracket 110 that form a hollow interior 108 when joined together.
Rear Support Member 102 and Front Support Member 104:
[0166] Rear support member 102 and front support member 104 are formed of any suitable size, shape, and design and are configured to form a hollow interior 108 and provide a forward surface suitable for operation as a back rest. In the arrangement shown, as one example, rear support member 102 has a generally rectangular planar shape having a front surface 120 and a rear surface 122 extending between an upper edge 112, a lower edge 114, and opposing side edges 116. In this example arrangement, rear support member 102 has contoured side portions 118 that curve forward proximate to side edges 116. In one or more arrangements, rear support member 102 includes a handhold 136 to facilitate easy transportation of seating system 10.
[0167] In one or more arrangements, as examples, rear support member 102 may include an ergonomic finger grip 446 and a housing 448. In one or more arrangements, as examples, the ergonomic finger grip 446 and housing 448 are configured to connect to the interior of the rear support member 102 and rest within hollow interior 108. In one or more arrangements, as examples, the ergonomic finger grip 446 and housing 448 are positioned such that when the user places their hand within the handhold 136, the user grasps the ergonomic finger grip 446. In one or more arrangements, as examples, housing 448 surrounds the ergonomic finger grip 446 in order to prevent a user from reaching their hand too far into the hollow interior 108 and also to prevent the components housed within hollow interior 108 from being viewed from the outside of hollow interior 108.
[0168] In one or more arrangements, as examples, the use of the ergonomic finger grip 446 provides a more comfortable grip for a user when they are moving the chair, especially when lifting the chair to move it long distances. In one or more arrangements, as examples, system 10 may include wheels, rollers, or other movement members on the front legs (which may be legs 190, pair of legs 202, and/or cantilevered leg assemblies 206) of frame 16. In one or more arrangements, as examples, a user may gently lift upward on the ergonomic finder grip 446, which causes the back legs (which may be legs 190, pair of legs 202, and/or cantilevered leg assemblies 206) of frame 16 to lift up off the ground, at which point the user can easily move system 10 using the wheels, rollers, or other movement members on the front legs (which may be legs 190, pair of legs 202, and/or cantilevered leg assemblies 206). In one or more arrangements, this easy movement of system 10, while utilizing the ergonomic finder grip 446, creates an efficient, comfortable, and ergonomic manner of moving system 10.
[0169] In one or more arrangements, front support member 104 has a front surface 130 and rear surface 132 extending between an upper edge 124, lower edge 126, and opposing side edges 128. In this example arrangement, front support member 104 has a complementary shape to rear support member 102 so that upper edge 124, lower edge 126, and side edges 128 align with upper edge 112, lower edge 114, and opposing side edges 116 of rear support member 102 when front support member 104 and rear support member 102 are brought together and/or connected. In this example arrangement, rear surface 132 of front support member 104 includes a recess (not shown) to form hollow interior 108 when front support member 104 and rear support member 102 are connected together.
Lower Bracket 110:
[0170] Lower bracket 110 is formed of any suitable size, shape, and design and is configured to form a bottom of backrest 14 and facilitate connection between lower edge 114 of rear support member 102 and lower edge 126 of front support member 104. In the arrangement shown, as one example, lower bracket 110 has an elongated L shape formed by generally a bottom flange 138 and a rear flange 140, which extends along the lower edge 114 of rear support member 102 between side edges 116. In one or more arrangements, as is shown, lower bracket 110 includes openings through which elongated supports 220 of back support section 174 of frame 16 extend into hollow interior 108 of backrest 14 and connect with reclining mechanism 20.
[0171] In some various arrangements, rear flange 140 of lower bracket 110 may be connected to rear support member 102 using various methods or means that provides a secure connection including, but not limited to, adhesive, glue, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, chemical bonding, and/or any other process or means of secure connection. While in some arrangements, lower bracket 110 may be illustrated and/or described as being a separate component, the arrangements are not so limited. Rather, it is contemplated that in some arrangements, lower bracket 110 may be formed as a unitary component with either rear support member 102 or front support member 104.
Cushion 106:
[0172] In the arrangement shown, backrest 14 includes a cushion 106 connected to front surface 130 of front support member 104. Cushion 106 is formed of any suitable size, shape, and design and is configured to provide a comfortable backrest support surface for an occupant of system 10. In the arrangement shown, as one example, cushion 106 has a generally rectangular shape, when viewed from the front, having a top 144, a bottom 146, opposing sides 148, a front surface 150, and a back surface 152 (not shown). In this example arrangement, front surface 150 of cushion 106 has an outward curved shape when viewed from the side. In this example arrangement, cushion 106 includes a foam core 82 covered by upholstery material 84 on at least one side as discussed with reference to cushion 28. As described with reference to cushion 28, cushion 106 may be attached to front support member 104 using various methods or means including but not limited to, for example, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, stitching, hook and loop connectors, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
Access Assembly 162:
[0173] In one or more arrangements, backrest 14 includes an access assembly 162. Access assembly 162 is formed of any suitable size, shape, and design and is configured to facilitate disconnection between front support member 104 and rear support member 102 of backrest 14 and thereby provide access to counterbalance assembly 300 of backrest 14. In the arrangement shown, as one example, access assembly 162 is configured to separate front support member 104 and cushion 106 from backrest 14 by disengaging hook bracket 166 from receiving bracket 164. In the arrangement shown, as one example, access assembly 162 includes one or more hook brackets 166, receiving brackets 164, and connectors 168.
Hook Bracket 166:
[0174] Hook bracket 166 is formed of any suitable size, shape, and design and is configured to connect with a receiving bracket 164 of backrest 14 when cushion 106 and front support member 104 are moved closer to rear support member 102 and access assembly 162 is in a closed position. In one or more arrangements shown, as one example, hook bracket 166 has an elongated hook shape and is formed of a metallic material such as steel, titanium, or nickel. However, the hook bracket 166 may also be formed of any other metallic material or non-metallic material that is capable of forming the hook shape. In this example arrangement, the hook of hook bracket 166 extends away from front support member 104 towards rear support member 102 and connects with receiving bracket 164 located on rear support member 102. In some various arrangements, hook bracket 166 may be connected to front support member 104 using various methods or means that provides a secure connection including, but not limited to, adhesive, glue, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, chemical bonding, and/or any other process or means of secure connection.
Receiving Bracket 164:
[0175] Receiving bracket 164 is formed of any suitable size, shape, and design and is configured to connect with a hook bracket 166 of front support member 104 when front support member 104 is moved closer to rear support member 102 and access assembly 162 is in a closed position. In one or more arrangements shown, as one example, receiving bracket 164 extends away from rear support member 102 and has a shape which compliments the hook shape of hook bracket 166. In one or more arrangements, receiving bracket 164 is formed of a metallic material such as steel, titanium, or nickel. However, the receiving bracket 164 may additionally or alternatively be formed of any other metallic material or non-metallic material that is capable of connecting to hook bracket 166 securely. In this example arrangement, receiving bracket 164 is connected to the front surface 120 of rear support member 102 using any method or means that provides a secure connection including, but not limited to, adhesive, glue, screws, bolts, clamps, pins, rivets, welding, snap connectors, friction fit connectors, chemical bonding, and/or any other process or means of secure connection. In this example arrangement, the receiving end of the receiving bracket 164 extends away from the front surface 120 of rear support member 102 towards front support member 104 and connects with hook bracket 166 located on front support member 104.
Connectors 168:
[0176] In one or more arrangements, access assembly 162 includes one or more connectors 168 (not shown) to secure front support member 104 and rear support member 102 together to ensure that hook bracket 166 of front support member 104 is not inadvertently lifted off of or otherwise removed from receiving bracket 164 of rear support member 102. For example, in one or more arrangements, access assembly 162 includes one or more connectors 168 positioned and configured to operably connect lower edge 126 of front support member 104 with lower edge 114 of rear support member 102. In the arrangement shown, connectors 168 are configured to connect with a lower bracket 110, which extends along the lower edge 114 of rear support member 102 and forms a bottom of backrest 14. With lower edge 126 of front support member 104 connected with lower bracket 110 at lower edge 114 of rear support member 102, hook bracket 166 is held securely by receiving bracket 164, thereby preventing front support member 104 from being disconnected from rear support member 102. In some various arrangements, connector 168 may utilize various methods or means for connecting including but not limited to, for example, fasteners (e.g., screws, bolts, clamps, pins, and rivets), snap connectors, friction fit connectors, magnetic connectors (e.g. magnetic and/or ferric materials), hook and loop connectors, welding, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
Frame 16:
[0177] Frame 16 is formed of any suitable size, shape, and design and is configured to operably connect with and support seat 12, backrest 14, and reclining mechanism 20 of system 10 to provide seating for an occupant of system 10. In one or more arrangements shown, as one example, frame 16 includes a base section 172 configured to operably connect with and support seat 12 and a back support section 174 configured to operably connect with and support reclining mechanism 20 and/or backrest 14. In some various arrangements, base section 172 may be connected to seat 12 and back support section 174 may be connected to reclining mechanism and/or backrest 14 using various methods or means for connecting including but not limited to, for example, fasteners (e.g., screws, bolts, clamps, pins, and rivets), snap connectors, friction fit connectors, magnetic connectors (e.g. magnetic and/or ferric materials), hook and loop connectors, welding adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
Base Section 172:
[0178] Base Section 172 of frame 16 is formed of any suitable size, shape, and design and is configured to provide stable support of system 10 on a floor. In one or more arrangements, base section 172 includes a set of legs 190. Legs 190 are formed of any suitable size shape and design and are configured to operably connect with and support seat 12 on the floor. In one or more arrangements, for example, the set of legs 190 have a generally straight elongated shape extending from an upper end 196 to a lower end 198.
[0179] In one or more arrangements, legs 190 are configured to operably connect with a bottom 46 of lower seat member 30. However, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, legs 190 may be configured to connect with another portion of lower seat member 30 or other component of seat 12. In various different arrangements, legs 190 may be connected with lower seat member 30 or other portion of seat 12 using various methods or means for connecting including but not limited to, for example, fasteners (e.g., screws, bolts, clamps, pins, and rivets), snap connectors, friction fit connectors, magnetic connectors (e.g. magnetic and/or ferric materials), hook and loop connectors, welding adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
[0180] In one or more arrangements, base section 172 includes an upper section 188 connected to legs 190. Upper section 188 is formed of any suitable size, shape, and design, and is configured to facilitate connection of legs 190 with seat 12 and/or provide additional rigidity and support for legs 190. In some various arrangements, upper section 188 may include cross supports, brackets, or any other suitable structure to facilitate connection and/or support of legs 190.
[0181] In one or more arrangements shown, as one example, base section 172 of frame 16 includes a set of four legs 190 to support the seating system 10. However, the arrangements are not so limited. Rather, it is contemplated that in one or more arrangements, base section 172 of frame 16 may include any number of legs of any suitable size, shape, or design.
[0182] In some various arrangements, upper section 188 and/or legs 190 may be formed of separate components that are connected together. Additionally or alternatively, in some arrangements, one or more portions of upper section 188 may be formed together with one or more legs as unitary components. For example, in the arrangement shown in
[0183] As another example, in the arrangement shown in
Back Support Section 174:
[0184] Back support section 174 of frame 16 is formed of any suitable size, shape, and design and is configured to operably connect with and support reclining mechanism 20 and/or backrest 14. In one or more arrangements, back support section 174 includes a set of elongated supports 220 that extend from a lower end 222, where supports 220 operably connect with base section 172 of frame 16 and/or seat 12, to an upper end 224, where supports 220 operably connect with reclining mechanism 20 and/or backrest 14. In one or more arrangements shown, as one example, back support section 174 includes a set of elongated supports 220 connected together by a crossbar 226 that extends between the upper ends 224 of the supports 220.
[0185] In one or more arrangements, elongated supports 220 have a set of upper posts 228 extending outward from an upper portion 230 of elongated supports 220 and a set of lower posts 232 extending outward from a lower portion 234 of elongated supports 220. In this example arrangement, upper posts 228 and lower posts 232 are configured to facilitate connection with reclining mechanism 20 to facilitate movement of backrest 14 between an upright position and a reclined position. In one or more arrangements shown, as one example, posts 228/232 are implemented by bolts configured to thread into and/or extend through holes 236 in the sides of elongated supports 220. However, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, elongated supports 220 may utilize various additional or alternative methods and/or means to facilitate connection with reclining mechanism 20.
[0186] In one or more arrangements shown, lower end 222 of back support section 174 is configured to connect to the underside of seat 12. In this example arrangement, lower end 222 of back support section 174 is connected to bottom 58 of upper seat member 32 of seat 12 by a bracket 182 and a set of fasteners 184.
[0187] However, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, lower end 222 of back support section 174 may be connected with various other portions of seating system and/or may be connected using various methods or means for connecting including but not limited to, for example, fasteners, clamps, pins, rivets, welding, snap connectors, friction fit connectors, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
[0188] Additionally or alternatively, in some arrangements, lower end 222 of back support section 174 may be connected with base section 172 of frame 16. As some illustrative examples,
[0189] For aesthetic appearances, it may be desirable to have backrest 14 be as compact as possible. To facilitate a compact design, in one or more arrangements, an upper portion of elongated support 220 that fits within the hollow interior of backrest 14 is crimped or rolled over to reduce diameter of the elongated support 220. In the example arrangements shown, the crimped or rolled portion is reduced to a inch diameter, which significantly reduces the space required for elongated supports 220 and reclining mechanism 20 within the hollow interior 108 of backrest 14. In some arrangements, the crimping or rolling of the upper portion of elongated supports 220 provides additional rigidity to elongated supports 220.
Reclining Mechanism 20:
[0190] Reclining mechanism 20 is formed of any suitable size, shape, and design and is configured to facilitate connection of backrest 14 with back support section 174 of frame 16 and facilitate movement of backrest 14 between up upright position and a reclined position.
[0191] In the arrangement shown, as one example, reclining mechanism 20 is configured to recline backrest 14 by moving an upper edge 112/124 of backrest 14 downward and rearward while also moving lower edge 114/126 of backrest 14 downward and forward. In the arrangement shown, as one example, reclining mechanism 20 includes a lower guide assembly 250, an upper guide assembly 252, and a counterbalance assembly 300.
[0192] In one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 0 and 90 relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 0 and 45 degrees relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 7 and 23 degrees relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 9 and 18 degrees relative to the upright position.
[0193] In one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline in a manner which avoids pulling a user's shirt while they are reclining. That is, in one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline such that the top of backrest 14 moves down and back as the seat is reclined, the bottom of backrest 14 moves forward and down as the seat is reclined, and this combined movement of backrest 14 allows backrest 14 to provide consistent lumbar support to the user. In one or more arrangements, as examples, this combined movement of backrest 14 also means that the user's back and backrest 14 move relatively in unison, meaning that there is no movement (or minimal movement) of the user's back relative to the backrest 14 during reclining. In one or more arrangements, because the user's back moves in unison with backrest 14, or said another way the user's back does not move (or has minimal movement) relative to the backrest 14, when system 10 is reclined, the user's shirt does not get pulled during the reclining movement. In other chair arrangements, the backrests do not recline in a manner which prevents (or significantly minimizes) the movement of the user's back relative to the backrest, which means a user's shirt is pulled during the reclining process.
[0194] In one or more arrangements, as examples, reclining mechanism 20 allows system 10 to move between the upright position and the reclined position without forcing the user to reposition their feet or rest their feet on their toes. That is, in one or more arrangements, as examples, reclining mechanism 20 allows system 10 to move between the upright position and the reclined position without changing (or significantly minimizing the change in) the angle or the positioning of seat 12. Said another way, in one or more arrangements, as examples, when backrest 14 is moved between the upright position and the reclined position, there is no translation or rotation of seat 12 (seat 12 remains stationary). When other chairs are reclined, the seat of the chair can tip upward and/or move outward. This movement of the seat can cause the user of the chair to either reposition their feet or rest their feet on their toes. The repositioning of feet and resting of feet on the users' toes is cumbersome, uncomfortable, and/or unsustainable for long periods of time. In one or more arrangements, as examples, reclining mechanism 20 operates to move the backrest 14 without changing the positioning of seat 12, thereby preventing the user from having to reposition their feet or rest their feet on their toes.
Lower Guide Assembly 250:
[0195] Lower guide assembly 250 is formed of any suitable size, shape, and design and is configured to connect with and guide lower portion 234 of elongated supports 220 of back support section 174 along one or more lower tracks 256 positioned within hollow interior 108 of backrest 14. In one or more arrangements, as one example, lower guide assembly 250 includes a set of lower tracks 256 and a set of lower track guides 258 operably connected to lower posts 232 positioned on lower portion 234 of elongated supports 220.
[0196] Lower track guides 258 are formed of any suitable size, shape, and design and are configured to engage and travel within lower track 256 to facilitate movement of backrest 14 between an upright position and a reclined position. In the arrangement shown, as one example, lower track guides 258 are cylindrical bushings positioned on posts. In this example arrangement, the cylindrical bushings have flanges extending around the ends of the bushings with a diameter sufficient to keep the lower track guides 258 within the lower tracks 256 during operation. However, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, lower track guides 258 may utilize various methods and/means to engage and travel within lower track 256 including but not limited to, for example, rollers, sliders, bearings, bushings, posts (e.g., lower posts 232), pins, tabs, fasteners, or any other method or means to facilitate operable connection of lower posts 232 with lower tracks 256.
[0197] Lower tracks 256 are formed of any suitable size, shape, and design and are configured to receive and hold lower track guides 258 and/or lower posts 232 to guide lower posts 232 along a path between a lower position, where backrest 14 is moved to the upright position, and an upper position, where backrest 14 is moved to the reclined position. In the arrangement shown, as one example, lower tracks 256 are slotted channels formed in the sides of a set of L brackets 260, which are positioned alongside elongated supports 220 of back support section 174 of frame 16 and operably connected to backrest 14. In this example arrangement, lower tracks 256 extend slightly beyond the upper position to a point where tracks 256 have a wider opening 262 to permit lower track guides 258 to be inserted into the lower tracks 256 from the side to facilitate installation/removal of backrest 14. When installed, upper tracks 268 of upper guide assembly 252 prevents seat from being moved to a position where lower track guides 258 reach the wider opening 262, thereby preventing reclining mechanism 20 and backrest 14 from unintentionally being disconnected from lower guide assembly 250.
[0198] In one or more arrangements, as are shown, brackets 260 of reclining mechanism 20 are operably connected to rear support member 102 of backrest support assembly 100 by fasteners 264 (e.g., screws or bolts) extending through holes 266 in a rear flange of brackets 260. However, the arrangements are not so limited. Rather, it is contemplated that brackets 260 may be connected with backrest 14 using various methods or means for connecting including but not limited to, for example, fasteners, clamps, pins, rivets, welding, snap connectors, friction fit connectors, adhesives, chemical bonding, and/or any other process or means that results in a permanent or semi-permanent connection.
Upper Guide Assembly 252:
[0199] Upper guide assembly 252 is formed of any suitable size, shape, and design and is configured to connect with and guide upper portion 230 of elongated supports 220 of back support section 174 along one or more upper tracks 268 positioned within hollow interior 108 of backrest 14. In one or more arrangements, as one example, upper guide assembly 252 includes a set of upper tracks 268 and a set of upper track guides 270 operably connected to upper posts 228 positioned on upper portion 230 of elongated supports 220.
[0200] Upper track guides 270 are formed of any suitable size, shape, and design and are configured to engage and travel within upper track 268 to facilitate movement of backrest 14 between an upright position and a reclined position. In the arrangement shown, as one example, upper track guides 270 are cylindrical bushings with flanges positioned on upper posts 228 and are similar to lower track guides 258 described with reference to lower guide assembly 250. However, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, upper track guides 270 may utilize various methods and/means to engage and travel within upper track 268 including but not limited to, for example, rollers, sliders, bearings, bushings, posts (e.g., upper posts 228), pins, tabs, fasteners, or any other method or means to facilitate operable connection of upper posts 228 with upper tracks 268. Moreover, while some arrangements may have upper track guides 270 and lower track guides 258 that are similar, the arrangements are not so limited. Rather, it is contemplated that upper guide assembly 252 and lower guide assembly 250 may utilize different types of guides and/or tracks.
[0201] Upper tracks 268 are formed of any suitable size, shape, and design and are configured to receive and hold upper track guides 270 and/or upper posts 228 to guide upper posts 228 along a path between a lower position, where backrest 14 is moved to the upright position, and an upper position, where backrest 14 is moved to the reclined position. In the arrangement shown, as one example, upper tracks 268 are slotted channels formed in the sides of brackets 260, which are operably connected to backrest 14.
[0202] In this example arrangement, an upper track 268 and a lower track 256 are formed together on the same unitary bracket 260. However, the arrangements are not so limited. Rather, it is contemplated that in some various different arrangements, upper track 268 and a lower track 256 may be implemented as separate brackets.
[0203] In this example arrangement, upper tracks 268 extend beyond the lower position to a rearward opening 276, which facilitates connection of upper track guides 270 with upper tracks 268 during installation. After installation, a stop member 282 is installed to prevent backrest 14 from being moved to a position where upper track guides 270 travel beyond the lower position. In this manner, stop member 282 prevents upper track guides 270 from being inadvertently removed from upper tracks 268 via rearward opening 276.
[0204] While lower tracks 256 of lower guide assembly 250 and upper tracks 268 of upper guide assembly 252 may be primarily illustrated and/or described with reference to slotted tracks, the arrangements are not so limited. Rather, it is contemplated that in some various arrangements, lower tracks 256 may be implemented with various different types of tracks known in the art, including but not limited to, for example, slotted tracks, T-tracks, dovetail tracks, D-tracks, C-tracks, or any other shaped slot, track, or channel.
Guide Paths of Upper Track and Lower Track
[0205] In various different arrangements, lower tracks 256 of lower guide assembly 250 and upper tracks 268 of upper guide assembly 252 may be configured to guide lower track guides 258 and upper track guides 270 along various shaped guide paths to facilitate movement of backrest 14 between upright and reclined positions. In one or more arrangements shown, as one example, upper track 268 guides upper track guides 270 along a curved guide path as backrest 14 is moved between the upright and reclined positions. In these example arrangements, lower tracks 256 guide lower track guides 258 along a generally straight guide path as backrest 14 is moved between the upright and reclined positions. Through careful observation and experimentation, this arrangement of guide paths has been found to provide smooth movement of backrest 14 while providing comfortable support and positioning of a user when moving between upright and reclined positions. However, the arrangements are not so limited. Rather, it is contemplated that in some various different arrangements, lower tracks 256 of lower guide assembly 250 and upper tracks 268 of upper guide assembly 252 may be configured to upper guides 258 and lower track guides 258 along various additional and/or alternative paths, which may be straight, various curved shapes, or any other shape.
Counterbalance Assembly 300:
[0206] Counterbalance assembly 300 is formed of any suitable size, shape, and design and is configured to apply a bias force sufficient to move backrest 14 to an upright position in the absence of a sufficient opposing force placed on backrest 14 (e.g., by an occupant leaning backward). In one or more arrangements shown, as examples, counterbalance assembly 300 includes one or more bias members 302 operably connected to back support section 174 of frame 16 and backrest 14.
[0207] In one or more arrangements, as examples, counterbalance assembly 300 provides a counterbalance force which can be adjusted to the user of system 10. In one or more arrangements, as examples, when counterbalance assembly 300 is adjusted to the user of system 10, counterbalance assembly 300 allows the user to apply a slight force to backrest 14 in order to cause backrest 14 to recline and, when properly adjusted, counterbalance assembly 300 allows the user of system 10 to relax at a desired reclining position without having to exert additional force to keep backrest 14 reclined at that desired reclining position. In other chairs, a user may be able to recline to any desired position, but the user will be pushed back upward once they get comfortable and reduce the amount of force they exert on the backrest of the chair, so the user will either have to continue to exert force to stay in the desired position, activate a lock on the chair to keep it in that desired position, or not recline in that desired position. In one or more arrangements, as examples, system 10 allows the user to get to a comfortable position at any point between the ranges of reclining described herein and the user does not have to exert additional force or activate a lock on the seat to stay in that desired position, thereby enhancing the user's comfort.
[0208] In one or more arrangements, as examples, when counterbalance assembly 300 is properly adjusted, the force applied by counterbalance assembly 300 is approximately equal to the amount of force a user will place on backrest 14 when resting comfortably in a desired position, thereby preventing backrest 14 from moving between the reclined and upright positions. In one or more arrangements, as examples, when counterbalance assembly 300 is properly adjusted, the force applied by counterbalance assembly 300 creates a net moment on backrest 14 which is approximately 0 when the user of system 10 is resting comfortably in a desired position, thereby preventing backrest 14 from moving between the reclined and upright positions. In one or more arrangements, as examples, when counterbalance assembly 300 is properly tensioned, the force applied by counterbalance assembly 300 allows system 10 to balance between the upright and reclined positions when the user of system 10 is resting comfortably in a desired position.
Bias Members 302
[0209] Bias members 302 are formed of any suitable size, shape, and design and are configured to apply a bias force sufficient to move backrest 14 to the upright position in the absence of an opposing force. In the arrangement shown, as one example, bias members 302 are extension springs having an upper end 304 operably connected to back support section 174 of frame 16 and a lower end 306 operably connected to rear support member 102 of backrest support assembly 100 of backrest 14. In this example arrangement, upper ends 304 of bias members 302 are operably connected to crossbar 226 of back support section 174 and lower ends 306 of bias members 302 are operably connected to lower bracket 110 positioned along lower edge 114 of rear support member 102. In this example arrangement, the bias members 302 pull backrest 14 upward relative to back support section 174 of frame 16. As backrest 14 is moved upward, lower guide assembly 250 and upper guide assembly 252 guide backrest to the upright position.
[0210] However, the arrangements are not so limited to extension springs. Rather, it is contemplated that some various arrangements may include various means and/or methods for generating forces, including but not limited to, for example, extension springs, compression springs, torsion springs, leaf springs, spiral springs, and/or any other type of spring, compressible materials, elastic bands, gas springs, and/or any other force generating means or combination thereof. For example, in some arrangements, counterbalance assembly 300 may additionally or alternatively include one or more compression spring type bias members 302 positioned above crossbar 226 of back support section 174 and configures to push an upper portion of rear support member 102 of backrest support assembly 100 of backrest 14 upward relative to the crossbar 226 in absence of an opposing force.
[0211] As another example, in one or more arrangements counterbalance assembly 300 may additionally or alternatively include a torsion spring type bias member 302 (e.g., positioned on crossbar 226 of back support section 174) that is operably connected to a spool 328 on which a cable 330, cord, rope or similar connector is spooled. In this example arrangement, the cable 330 extends from spool 328 and operably connects with an upper end 324 of tension adjustment assemblies 316 (or other fastener 334 or component connected to backrest 14). In this example arrangement, tension on the torsion spring type bias member 302 rotates spool 328 and places tension on cable 330, which pulls backrest upward to the upright position in absence of an opposing force.
[0212] In one or more arrangements, counterbalance assembly 300 is configured to adjust tension on cable 330 as backrest 14 is moved between upright and reclined positions to provide a dynamic counterbalance force. Such adjustment may be desirable, for example to facilitate holding backrest in one or more intermediate positions.
[0213] For example, in one or more arrangements spool 328 may have an outer surface shape that changes in circumference as cable 330 is spooled/unspooled. Additionally or alternatively, in one or more arrangements, counterbalance assembly 300 includes a cam 332 configured to engage cable 330 and rotate as cable 330 is spooled/unspooled. In one or more arrangements, cam 332 has an outer surface shape that changes in circumference as cable 330 is spooled/unspooled.
[0214] In one or more arrangements, counterbalance assembly 300 is configured to modify the tension of first cable 330 as backrest 14 is moved between upright and reclined positions. For example in some arrangements shown, cam 332 extends outward from an axis, about which cam 332 rotates, to a perimeter edge. In one or more arrangements, cam 332 includes a recess and/or channel extending around a perimeter edge and in which first cable 330 is positioned and engages cam 332.
[0215] The embodiments are not limited to use of uniform and/or non-uniform spools and/or cams to provide dynamic counterbalance force. Rather, it is contemplated that in some arrangements system 10 may utilize various mechanisms providing dynamic counterbalance force and/or to facilitate holding backrest 14 at one or more intermediate positions including but not limited to, for example, recesses, protrusions, indents, detents, holes, compressive fittings, frictional stops, magnetic components, gears, latches, non-linear springs, non-uniform spools, cams and pulleys and/or any other suitable means and/or methods known in the art.
Tension Adjustment Assemblies 316
[0216] In one or more arrangements, counterbalance assembly 300 includes one or more tension adjustment assemblies 316. Tension adjustment assemblies 316 are formed of any suitable size, shape, and design, and are configured to facilitate adjustment of the amount of bias force applied to the backrest 14 by bias members 302. In the arrangement shown, as one example, tension adjustment assemblies 316 are configured to connect with the lower end 306 of bias members 302 and with lower bracket 110 positioned along lower edge 114 of rear support member 102. In this example arrangements, tension adjustment assemblies 316 are configured to adjust the position of lower end 306 of bias members 302 relative to lower bracket 110, thereby adjusting tension of the extension spring type bias members 302.
[0217] In the arrangement shown, tension adjustment assemblies 316 have a main body 318 and a tensioner screw 320 connecting the main body to the lower bracket 110. In this example arrangement, main body 318 has an elongated generally rectangular shape extending from an upper end 324, where main body 318 connects with lower end 306 of a bias member 302, to a lower end 322, where main body 318 connects with tensioner screw 320. In this example arrangement, upper end 324 of main body 318 has a hook shape to facilitate connection with lower end 306 of a bias member 302. In this example arrangement, tensioner screw 320 extends through a hole in lower bracket 110 and into a threaded hole 326 (not shown) formed in lower end 306 of a bias member 302. In this example arrangement, a user can adjust tension by rotating tensioner screw 320 which is accessible via the bottom of backrest 14 formed by lower bracket 110, to cause main body 318 and lower end 306 of a bias member 302 to be moved close to or further away from lower bracket 110.
Stop Features 280:
[0218] In one or more arrangements, reclining mechanism 20 includes one or more stop features 280. Stop features 280 are formed of any suitable size, shape, and design and are configured to restrict movement of backrest to prevent lower track guides 258 and/or upper track guides 270 from moving to wide openings 262 and/or rearward openings 276 where guides can be removed from lower tracks 256 and/or upper tracks 268. In the arrangement shown, as one example, stop features 280 include a stop member 282 attached to rear support member 102 of backrest 14 and a bushing 284 positioned on crossbar 226 of back support section 174 of frame 16. In this example arrangement, when backrest is moved to the upright position, stop member 282 contacts bushing 284 to prevent backrest from moving further upward, and thereby preventing upper track guides 270 from moving to the rearward openings 276 in upper tracks 268, where guides can be removed from upper tracks 268. In one or more arrangements, stop member 282 and/or bushing 284 may include rubber, foam, or other compressible material to reduce the sound made when stop member 282 and bushing 284 contact and/or to reduce stresses on various components when stop member 282 and bushing 284 contact each other.
Static Friction Hold of Backrest in Partially Reclined Positions:
[0219] In one or more arrangements, angles of the guide paths, shape and frictional forces of guides 258/270 and/or tracks 256/268, and/or bias force provided by bias members 302, and/or other variables of operation are balanced to provide smooth movement of backrest 14 while providing comfortable support and positioning of a user when moving between upright and reclined positions. In one or more arrangements, these variables of operation are balanced to require a threshold amount of force for a user to move backrest 14 from the upright position to a fully or partially reclined position. Such threshold force to move backrest 14 provides a feeling of safety and support to a user. In one or more arrangements, the variables of operation are additionally or alternatively balanced to provide a static coefficient of friction sufficient to prevent the backrest 14 from moving when a user makes minor insignificant changes in force applied to the backrest. This helps to avoid a back and forth seesaw motion and give the user a feeling that the backrest is supported when at a partially reclined position.
Installation of Backrest
[0220] To install backrest, 14, reclining mechanism 20 is first installed on back support section 174 of frame 16. To install reclining mechanism 20, brackets 260 of reclining mechanism 20 are first positioned to align lower track guides 258 with opening 262 of lower track 256 and maneuver brackets 260 to insert lower track guides 258 into lower track 256. Brackets 260 are then moved downward in lower track 256 until rear support member 102 can be repositioned to insert upper track guides 270 into upper tracks 268 through rearward opening 276. With lower track guides 258 in lower tracks 256 and upper track guides 270 in upper tracks 268, brackets 260 are lowered to a position where they can be held in a relatively stable position so brackets 260 can be attached to rear support member 102.
[0221] After brackets 260 are attached to rear support member 102, stop member 282 can be attached to rear support member 102. With stop member 282 attached, rear support member 102 of backrest 14 is prevented from moving upward to the position where upper track guides 270 can be removed from upper tracks 268 through rearward opening 276. Additionally, the range of motion provided by upper track 268 prevents rear support member 102 of backrest 14 from moving downward to the position where lower track guides 258 can be removed from lower tracks 256 via openings 262.
[0222] Bias members 302 are then attached to crossbar 226 of back support section 174 of frame 16 and also to lower bracket 110 positioned along lower edge 114 of rear support member 102. After bias members 302 are attached, cushion 106 and front support member 104 of backrest 14 are attached to rear support member 102 by maneuvering cushion 106 and front support member 104 to place hook bracket 166 on receiving bracket 164 and then lower the lower edge 126 of front support member 104 to align and connect connectors 168 with lower bracket 110 positioned along lower edge 114 of rear support member 102.
Alternative Arrangement:
[0223] In the arrangements shown with reference to
Posts 228 and Posts 232:
[0224] In one or more such arrangements, upper posts 228 and lower posts 232 are fasteners configured to be removed from elongated supports 220 to facilitate installation. For example, in one of more arrangements, upper posts 228 and lower posts 232 are bolts that extend through lower tracks 256 or upper tracks 268 into and/or through holes in elongated supports 220 and further through a respective one of the lower tracks 256 or upper tracks 268 and/or track guides 258/270 positioned therein.
Alignment Spacer Bracket 340:
[0225] In one or more arrangements, reclining mechanism 20 has alignment spacer brackets 340 positioned between brackets 260 of reclining mechanism 20 and elongated supports 220 of back support section 174 of frame 16. The reinforcement spacer brackets 340 are formed of any suitable size, shape, and design and are configured to reduce twisting and/or play between brackets 260 and elongated supports 220 to facilitate smooth movement of backrest 14 between an upright and a reclined position. In an arrangement shown, as one example, alignment spacer brackets 340 have a generally rectangular elongated shape having an inner side 342, outer side 344, a front 346, and a back 348 extending between an upper end 350 and a lower end 352.
[0226] In the arrangement shown, as one example, outer side 344 has a generally planar surface configured to conform with a generally planar side surface of bracket 260 of reclining assembly 20. In this example arrangement, inner side 342 has a cylindrical shaped recess extending along the length of the alignment spacer bracket 340, which is configured to conform with an exterior surface of elongated supports 220 of back support section 174 of frame 16. However, the arrangements are not so limited. Rather, it is envisioned that in some various arrangements outer side 344 and inner side 342 of alignment spacer bracket 340 may have various different shapes to facilitate engagement with bracket 260 of reclining assembly 20 elongated supports 220 of back support section 174.
[0227] In the arrangement shown, as one example, alignment spacer bracket 340 has holes 354 positioned near the upper end 350 and a lower end 352 to facilitate connection with brackets 260 (e.g., by fasteners or posts 228/232 extending through holes 354). In the arrangement shown, as one example, alignment spacer bracket 340 has collars 356 that are aligned with holes 354 and extend outward to the inner side 342 of alignment spacer bracket 340.
[0228] In this example arrangement, collars 356 are configured to be inserted into and held within holes 236 of elongated members 220 with close and tight tolerances. In the arrangement shown, fasteners extend through holes 236 of elongated members 220, through collars 356 and holes 354 of alignment spacer bracket 340, and through track guides 258/270 positioned in tracks 256/258 of reclining mechanism 20.
Alternative Arrangement:
[0229] In the arrangements shown with reference to
Back Support Section 174:
[0230] In the alternative arrangement shown in
[0231] In the alternative arrangement shown, as one example, elongated supports 220 include a first set of openings 400 on or near upper portion 230 which extend through a portion of elongated supports 220 in a first direction and a second set of openings 402 on or near upper portion 230 which extend through a portion of elongated supports 220 in a second direction which is approximately perpendicular to the direction which the first set of openings 400 extend. In the arrangement shown, as one example, first set of openings 400 and second set of openings 402 of elongated supports 220 extend through the exterior of elongated supports 220 and into a hollow interior of elongated supports 220.
[0232] In the alternative arrangement shown, as one example, back support section 174 also includes inserts 404 which are positioned within the hollow interior of the elongated supports 220 at or near the upper portion 230. In the alternative arrangement shown, as one example, inserts 404 include a first set of openings 406 which are configured to align with the first set of openings 400 of elongated supports 220. In the alternative arrangement shown, as one example, inserts 404 also include a second set of openings 408 which are configured to align with the second set of openings 402 of elongated supports 220.
[0233] In the alternative arrangement shown, as one example, elongated supports 220 include a set of upper posts 228 extending outward from an upper portion 230 of elongated supports 220 and a set of lower posts 232 extending outward from a lower portion 234 of elongated supports 220. In this alternative arrangement, as one example, upper posts 228 and lower posts 232 are configured to facilitate connection with reclining mechanism 20 to facilitate movement of backrest 14 between an upright position and a reclined position. In the alternative arrangement, as one example, the upper posts 228 and lower posts 232 are implemented by bolts configured to thread into and through the first set of openings 400 of elongated supports 220 and into the first set of openings 406 of inserts 404.
[0234] In this alternative arrangement, as one example, inserts 404 function to increase overall stability of backrest 14 by reducing wiggling of certain components when backrest 14 and reclining mechanism 20 are operably connected to back support section 174 of frame 16. That is, in various arrangements with different mechanisms used to operably connect backrest 14, reclining mechanism 20, and back support section 174 of frame 16 the connection resulted in certain components not being held in a close, tight, and stable manner, thereby creating wiggling of certain components which resulted in backrest 14 having decreased stability. The use of inserts 404 helps improve stability by creating a closer, tighter, and more stable connection between backrest 14, reclining mechanism 20, and back support section 174 of frame 16. Additionally, inserts 404 are easier to manufacture and require less machining than alternative connection mechanisms, therefore the use of inserts 404 also helps reduce machining and/or manufacturing costs, time, and hassle.
Reclining Mechanism 20:
[0235] In the alternative arrangement shown in
[0236] In one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 0 and 90 relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 0 and 45 degrees relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 7 and 23 degrees relative to the upright position. In one or more arrangements, as examples, the reclining mechanism 20 allows the backrest 14 of system 10 to recline anywhere between 9 and 18 degrees relative to the upright position.
[0237] In one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline in a manner which avoids pulling a user's shirt while they are reclining. That is, in one or more arrangements, as examples, reclining mechanism 20 allows the backrest 14 of system 10 to recline such that the top of backrest 14 moves down and back as the seat is reclined, the bottom of backrest 14 moves forward and down as the seat is reclined, and this combined movement of backrest 14 allows backrest 14 to provide consistent lumbar support to the user. In one or more arrangements, as examples, this combined movement of backrest 14 also means that the user's back and backrest 14 move relatively in unison, meaning that there is no movement (or minimal movement) of the user's back relative to the backrest 14 during reclining. In one or more arrangements, because the user's back moves in unison with backrest 14, or said another way the user's back does not move (or has minimal movement) relative to the backrest 14, when system 10 is reclined, the user's shirt does not get pulled during the reclining movement. In other chair arrangements, the backrests do not recline in a manner which prevents (or severely minimizes) the movement of the user's back relative to the backrest, which means a user's shirt is pulled during the reclining process.
[0238] In one or more arrangements, as examples, reclining mechanism 20 allows system 10 to move between the upright position and the reclined position without forcing the user to reposition their feet or rest their feet on their toes. That is, in one or more arrangements, as examples, reclining mechanism 20 allows system 10 to move between the upright position and the reclined position without changing (or severely minimizing the change in) the angle or the positioning of seat 12. When other chairs are reclined, the seat of the chair can tip upward and/or move outward. This movement of the seat can cause the user of the chair to either reposition their feet or rest their feet on their toes. The repositioning of feet and resting of feet on the users' toes is cumbersome, uncomfortable, and/or unsustainable for long periods of time. In one or more arrangements, as examples, reclining mechanism 20 operates to move the backrest 14 without changing the positioning of seat 12, thereby preventing the user from having to reposition their feet or rest their feet on their toes.
Guide Wheels 410:
[0239] In the alternative arrangement shown in
[0240] In the alternative arrangement shown, as one example, guide wheels 410 are generally circular wheels with an axle 414 which is configured to extend through the middle of guide wheels 410, extend into and through the second set of openings 402 of elongated supports 220, and extend and thread into the second set of openings 408 of inserts 404, thereby operably connecting guide wheels 410 to elongated supports 220.
[0241] In the alternative arrangement shown, as one example, when compared to alternative mechanisms to reduce twisting, racking, and/or play between brackets 260 and elongated supports 220, guide wheels 410 provide smoother, quieter, and more consistent movement of backrest 14. Additionally, guide wheels 410 cause less wear and tear on brackets 260 and elongated supports 220, which also reduces dust and debris from building up within the hollow interior of backrest 14.
Counterbalance Assembly 300:
[0242] Counterbalance assembly 300 is formed of any suitable size, shape, and design and is configured to apply a bias force sufficient to move backrest 14 to an upright position in the absence of a sufficient opposing force placed on backrest (e.g., by an occupant leaning backward). In one or more arrangements shown, as one example, counterbalance assembly 300 includes one or more bias members 302 operably connected to back support section 174 of frame 16 and backrest 14.
[0243] In one or more arrangements, as examples, counterbalance assembly 300 provides a counterbalance force which can be adjusted to the user of system 10. In one or more arrangements, as examples, when counterbalance assembly 300 is adjusted to the user of system 10, counterbalance assembly 300 allows the user to apply a slight force to backrest 14 in order to cause backrest 14 to recline and, when properly adjusted, counterbalance assembly 300 allows the user of system 10 to relax at a desired reclining position without having to exert additional force to keep backrest 14 reclined at that desired reclining position. In other chairs, a user may be able to recline to any desired position, but the user will be pushed back upward once they get comfortable and reduce the amount of force they exert on the backrest of the chair, so the user will either have to continue to exert force to stay in the desired position, or not recline in that desired position. In one or more arrangements, as examples, system 10 allows the user to get to a comfortable position at any point between the ranges of reclining described herein and the user does not have to exert additional force to stay in that desired position, thereby enhancing the user's comfort.
[0244] In one or more arrangements, as examples, when counterbalance assembly 300 is properly adjusted, the force applied by counterbalance assembly 300 is approximately equal to the amount of force a user will place on backrest 14 when resting comfortably in a desired position, thereby preventing backrest 14 from moving between the reclined and upright positions. In one or more arrangements, as examples, when counterbalance assembly 300 is properly adjusted, the force applied by counterbalance assembly 300 creates a net moment on backrest 14 which is approximately 0 when the user of system 10 is resting comfortably in a desired position, thereby preventing backrest 14 from moving between the reclined and upright positions. In one or more arrangements, as examples, when counterbalance assembly 300 is properly tensioned, the force applied by counterbalance assembly 300 allows system 10 to balance between the upright and reclined positions when the user of system 10 is resting comfortably in a desired position.
Bias Members 302
[0245] Bias members 302 are formed of any suitable size, shape, and design and are configured to apply a bias force sufficient to move backrest 14 to the upright position in the absence of an opposing force. In the alternative arrangement shown, as one example, bias member 302 is a torsion spring type bias member 302 (e.g., positioned on crossbar 226 of back support section 174) that is operably connected to a spool 328 on which a cable 330 (or cord, rope, or similar connector) is spooled. In this example arrangement, the cable 330 extends from spool 328 and operably connects to an adjustment mechanism 416.
[0246] As another example, in one or more arrangements counterbalance assembly 300 may additionally or alternatively include a torsion spring type bias member 302 (e.g., positioned on crossbar 226 of back support section 174) that is operably connected to a spool 328 on which a cable 330, cord, rope or similar connector is spooled. In this example arrangement, the cable 330 extends from spool 328 and operably connects to an adjustment mechanism 416.
[0247] In this example arrangement, tension on the torsion spring type bias member 302 rotates spool 328 and places tension on cable 330, which pulls backrest 14 upward to the upright position in the absence of an opposing force. In one or more arrangements, counterbalance assembly 300 is configured to adjust tension on cable 330 as backrest 14 is moved between upright and reclined positions to provide a dynamic counterbalance force. Such adjustment may be desirable, for example to facilitate holding backrest in one or more intermediate positions.
[0248] For example, in one or more arrangements spool 328 may have an outer surface shape that changes in circumference as cable 330 is spooled/unspooled. Additionally or alternatively, in one or more arrangements, counterbalance assembly 300 includes a cam 332 configured to engage cable 330 and rotate as cable 330 is spooled/unspooled. In one or more arrangements, cam 332 has an outer surface shape that changes in circumference as cable 330 is spooled/unspooled.
[0249] In one or more arrangements, counterbalance assembly 300 is configured to modify the tension of first cable 330 as backrest 14 is moved between upright and reclined positions. For example in some arrangements shown, cam 332 extends outward from an axis, about which cam 332 rotates, to a perimeter edge. In one or more arrangements, cam 332 includes a recess and/or channel extending around the perimeter edge and in which first cable 330 is positioned and engages cam 332.
[0250] The embodiments are not limited to use of uniform and/or non-uniform spools and/or cams to provide dynamic counterbalance force. Rather, it is contemplated that in some arrangements system 10 may utilize various mechanisms providing dynamic counterbalance force and/or to facilitate holding backrest 14 at one or more intermediate positions including but not limited to, for example, recesses, protrusions, indents, detents, holes, compressive fittings, frictional stops, magnetic components, gears, latches, non-linear springs, non-uniform spools, cams and pulleys and/or any other suitable means and/or methods known in the art.
Adjustment Mechanism 416
[0251] In the alternative arrangement shown in
[0252] In the alternative arrangement shown, as one example, adjustment mechanism 416 includes housing 418. Housing 418 is formed of any suitable size, shape, and design and is configured to operably connect the various components of adjudgment mechanism 416 to each other and to rear support member 102 of backrest support assembly 100. In the arrangement shown, as one example, housing 418 is connected to rear support member 102 by bolts, screws, or any other types of fasteners, adhesion, or connection mechanisms which extend through openings in housing 418 and into openings in rear support member 102. In this way, housing 418, and the remaining parts of adjustment mechanism 416, are operably connected to rear support member 102 of backrest support assembly 100.
[0253] In the alternative arrangement shown, as one example, adjustment mechanism 416 includes spool 420. Spool 420 is formed of any suitable size, shape, and design and is configured to operably rest within housing 418, operably connect to cable 330 of counterbalance assembly 300, and help pull backrest 14 upward to the upright position in the absence of an opposing force. In the alternative arrangement shown, as one example, cable 330 extends downward from spool 328 which is operably connected to torsion spring type bias member 302. As torsion spring type bias member 302 rotates, spool 328 also rotates and pulls on cable 330 which causes spool 420 of adjustment mechanism 416 to rotate. When housing 418 is operably connected to rear support member 102, the rotation of spool 420 causes housing 418 to be pulled upward, which in turn forces backrest 14 to be pulled upward to the upright position in the absence of an opposing force.
[0254] In the alternative arrangement shown, as one example, spool 420 is a generally cylindrical shaft around which cable 330 can wrap, and also around which worm wheel 422 extends. Worm wheel 422 is formed of any suitable size, shape, and design and is configured to rotate with spool 420 and operably engage worm shaft 424 to form a worm gear. Worm shaft 424 is formed of any suitable size, shape, and design and is configured to operably engage with worm wheel 422 and engagement member 426 in order to help facilitate the adjustment of the amount of bias force applied to the backrest 14 by bias members 302.
[0255] In the alternative arrangement shown, as one example, worm shaft 424 is a generally cylindrical shaft with teeth extending outward from a portion of worm shaft 424 is a helical manner. In the arrangement shown, as one example, a portion of worm shaft 424 is also smooth and operably connects, within close and tight tolerances, to engagement member 426.
[0256] Engagement member 426 is formed of any suitable size, shape, and design and is configured to be hidden from sight when viewing the chair from the top, front, or rear of system 10, but be accessible to the user of system 10 through the bottom of system 10. In the alternative arrangement shown, as one example, a user of system 10 can access engagement member 426, without having to remove cushion 106 or front support member 104 of backrest support assembly 100, through an opening between the front support member 104 and rear support member 102 of backrest support assembly 100.
[0257] In the alternative arrangement shown, as one example, the user can rotate engagement member 426, which causes worm shaft 424 to rotate. The helical teeth of worm shaft 424 then rotate and operably engage with teeth of worm wheel 422, thereby causing worm wheel 422 to rotate. As worm wheel 422 rotates, cable 330 either wraps or unwraps from spool 420, thereby increasing or decreasing the tension on cable 330. As the tension on cable 330 is increased or decreased, the force on spool 328, and thereby torsion spring type bias member 302, is either increased or decreased. The increase or decrease of the force exerted on torsion spring type bias member 302 adjusts the amount of bias force applied to the backrest 14 by bias members 302. In this way, adjustment member 416 facilitates adjustment of the amount of bias force applied to the backrest 14 by bias members 302, and is also hidden from sight when viewing the chair from the top, front, back, or sides of system 10 but still accessible to the user of system 10.
[0258] In the arrangement shown, as one example, the adjustment of the amount of bias force applied to backrest 14 helps prevent backrest 14 from reclining when the user does not intend for backrest 14 to recline while still easily and smoothly reclining when the user does want to recline, and also helps facilitate the smooth return of backrest 14 to the upright position when there is no counter force being applied.
Damper Assembly 412:
[0259] In the alternative arrangement shown in
[0260] In the alternative arrangement shown, as one example, damper assembly 412 includes a first connection member 428. First connection member 428 is formed of any suitable size, shape, and design and is configured to connect to crossbar 226 of back support section 174, thereby operably connecting damper assembly 412 to frame 16, and operably connects to rod 430. In the arrangement shown, as one example, first connection member 428 includes an opening 436 near a top side 438 of first connection member 428 and opening 436 is sized and shaped to allow crossbar 226 to extend through first connection member 428. In the arrangement shown, as one example, first connection member 428 includes a bottom side 440 which is configured to operably connects to rod 430 through any means of connection including welding, adhesion, screwing, bolting, riveting, or any other means of connection.
[0261] In the alternative arrangement shown, as one example, damper assembly 412 includes rod 430. Rod 430 is formed of any suitable size, shape, and design and is configured to help facilitate the controlled return of backrest 14 to the upright position. In the arrangement shown, as one example, rod 430 connects at an upper end to first connection member 428 and extends downward and into a hollow interior of cylinder 432. In the alternative arrangement shown, as one example, the second end of rod 430 may have a flange which extends outward from rod 430 a distance such that the flange operably engages the interior wall of cylinder 432 in a manner that allows for controlled, consistent movement within cylinder 432.
[0262] In the alternative arrangement shown, as one example, damper assembly 412 includes cylinder 432. Cylinder 432 is formed of any suitable size, shape, and design and is configured to operably connect to and engage with rod 430 and connect to second engagement member 434. In the alternative arrangement shown, as one example, cylinder 432 extends between a top side 442 and a bottom side 444 and has an opening at the top side 442 which allows rod 430 to extend into the hollow interior of cylinder 432. In the alternative arrangement shown, as one example, the hollow interior of cylinder 432 is shaped and sized to fit the flange of rod 430 such that the flange of rod 430 contacts (or nearly contacts) and loosely engages the interior wall of cylinder 432 such that the flange may move up and down within the hollow interior of cylinder 432 but the movement is slowed by the friction between the flange of rod 430 and the interior wall of cylinder 432. Additionally or alternatively to relying on friction between the flange of rod 430 and the interior wall of cylinder 432, in one or more arrangements, as examples, cylinder 432 may also be filled with any type of oil, fluid, liquid, or other material which is configured to slow the movement of the flange of rod 430 within cylinder 432. More specifically, in one or more arrangements, as examples, in order for the flange of rod 430 to move within the hollow interior of cylinder 432, the oil, fluid, liquid, or other material that is within cylinder 432 must be displaced by the flange pushing or moving the oil, fluid, liquid, or other material out of the way, which results in a more slow and controlled movement of rod 430.
[0263] In the alternative arrangement shown, as one example, damper assembly 412 includes second connection member 434. Second connection member 434 is formed of any suitable size, shape, and design and is configured to hold cylinder 432 within close and tight tolerances therein and operably connect to adjustment mechanism 416. In the arrangement shown, as one example, second connection member 434 is a generally cylindrical member with a hollow interior. In the arrangement shown, as one example, the hollow interior of connection member 434 is configured to receive and hold cylinder 432 within close and tight tolerances therein. In the arrangement shown, as one example, second connection member 434 is also configured to connect to the housing 418 of adjustment mechanism 416 by any means of connection including adhesion, forming, friction fitting, screwing, bolting, or any other means of connection.
[0264] In the alternative arrangement shown, as one example, when damper assembly 412 is operably connected to crossbar 226 (via first connection member 428) and to housing 418 of adjustment mechanism 416 (via second connection member 428), damper assembly 412 is operably connected to both frame 16 and backrest 14.
[0265] In the alternative arrangement shown, as one example, when a user stands up or leans forward, thereby releasing the counterforce which pushed backrest 14 to a reclined position, counterbalance assembly 300 operates to pull backrest 14 back to the upright position. In various arrangements, counterbalance assembly 300 may pull backrest 14 too aggressively forward, which causes the backrest 14 to quickly move to the upright position and create a loud thud and a heavy impact when it reaches the upright position. In order to prevent this, the alternative arrangement shown, as one example, includes damper assembly 412.
[0266] In the alternative arrangement shown, as one example, as the counterbalance assembly 300 pulls backrest 14 upward, damper assembly 412 slows and controls the upward movement of backrest 14. In the alternative arrangement shown, as one example, the slow and controlled upward movement of backrest 14 is due to the operable, frictional engagement between rod 430 and cylinder 432 (and/or the interaction between rod 430 and the oil, fluid, liquid, or other material within cylinder 432). In other words, rod 430 is prevented from moving too quickly because of the frictional engagement with the interior walls of cylinder 432 (and/or the interaction between rod 430 and the oil, fluid, liquid, or other material within cylinder 432) and because damper assembly 412 is operably connected to the frame 16 and backrest 14, damper assembly 412 prevents the relative movement of backrest 14 from being too quick. Therefore, in the alternative arrangement shown, as one example, damper assembly 412 controls the movement of backrest 14 to the upright position in order to prevent loud thuds and heavy impacts when backrest 14 reaches the upright position.
[0267] In the alternative arrangement shown, as one example, when a user leans back in order to recline backrest 14, the force of the user leaning back overcomes the force of the counterbalance assembly 300, thereby allowing the chair to recline. However, this recline is still slowed and controlled by the damper assembly 412. That is, as the backrest 14 reclines, rod 430 moves within cylinder 432, however rod 430 is prevented from moving too quickly because of the frictional engagement with the interior walls of cylinder 432 and/or the interaction between rod 430 and the oil, fluid, liquid, or other material within cylinder 432. Therefore, in the alternative arrangement shown, as one example, damper assembly 412 may also control the movement of backrest 14 to a reclined position in order to prevent sudden, jerky, fast movement backwards which also may result in a loud and heavy impact when backrest 14 reaches the fully reclined position.
Materials
[0268] In some various arrangements shown, lower support member 30 of seat assembly 26 of seat 12, rear support member 102 of backrest support assembly 100 of backrest 14, base section 172 of frame 16 and/or various other components are formed of a wooden material, which provides an aesthetically pleasing appearance. Additionally or alternatively, in some various arrangements shown, base section 172 and/or back support section 174 of frame 16 are formed of metal, which provides strength and rigidity as well as an aesthetically pleasing appearance. However, the embodiments are not so limited. Rather, it is contemplated that in various arrangements, lower support seat member 30, rear support member 102, frame 16 and/or various other components of seating system 10 may be formed of various natural or synthetic materials including but not limited to metals, woods, plastics, composites, laminins, of any other material.
[0269] From the above discussion it will be appreciated that the described system improves upon the state of the art. Specifically, one or more embodiments provide an improved seating system: that has a compact reclining mechanism concealed within the chair that is configured to support an occupant in upright and reclined positions; that is strong, robust, and durable; that is comfortable; that is easy and intuitive to use; that is easy to manufacture; that is cost effective; that is high quality; that has a long useful life; and/or that is aesthetically pleasing among various other features and/or advantages.
[0270] It will be appreciated by those skilled in the art that other various modifications could be made to the device without parting from the spirit and scope of this disclosure. All such modifications and changes fall within the scope of the claims and are intended to be covered thereby.