UMBRELLA ASSEMBLY WITH COUNTERWEIGHT SYSTEM
20250280932 ยท 2025-09-11
Inventors
Cpc classification
International classification
Abstract
An umbrella is provided that includes a hollow pole, a shade assembly, a counterweight system, and a locking device. The shade assembly includes a guide rod coupled with an upper hub. The guide rod has a stop surface. The counterweight system has a ballast and a cord that has a first end coupled with the ballast and a second end coupled with a lower hub. The locking device has pushrod mechanism. When closing the umbrella, the pushrod mechanism moves upward disengaging a moveable locking surface from the guide rod to allow the lower hub to move downward and the ballast to move upward.
Claims
1.-28. (canceled)
29. An umbrella comprising: a pole; a shade assembly coupled with an upper portion of the pole, the shade assembly comprising an upper hub; a guide rod movably disposed within the pole and coupled with the upper hub; and a locking device, the locking device comprising: a hook assembly configured to engage the guide rod to lock the umbrella in an open state, and a pushrod at least partially disposed below the hook assembly, wherein, when closing the umbrella, the pushrod is actuated to move upward to disengage the hook assembly.
29. The umbrella of claim 29, wherein the hook assembly comprises a prong configured to fit within a corresponding recess of the guide rod.
31. The umbrella of claim 30, wherein the hook assembly comprises a plurality of prongs, each prong configured to fit within a corresponding recess of the guide rod.
32. The umbrella of claim 29, wherein the pushrod comprises a fixture configured to disengage the hook assembly when the pushrod moves upward.
33. The umbrella of claim 32, wherein the fixture comprises an angled surface, the angled surface configured to disengage the hook assembly when the pushrod moves upward.
34. The umbrella of claim 29, wherein the pushrod comprises at least one width that corresponds with a width of an interior space of the guide rod, the corresponding widths configured to prevent the pushrod from deflecting away from the hook assembly when the pushrod moves upward.
35. The umbrella of claim 29, wherein the locking device comprises a spring configured to urge the hook assembly to engage the guide rod.
36. The umbrella of claim 29, further comprising a counterweight system disposed within an interior space of the pole.
37. The umbrella of claim 36, wherein the counterweight system comprises a ballast and a cord having a first end coupled with the ballast and a second end coupled with a lower hub.
38. The umbrella of claim 37, wherein the pushrod is actuated by movement of the ballast.
39. An umbrella comprising: a pole; a shade assembly coupled with an upper portion of the pole, the shade assembly comprising: an upper hub coupled with a guide rod, and a lower hub moveable along the pole; and a locking device configured to engage the guide rod, the locking device comprising a pushrod positioned at least partially below the lower hub, wherein when closing the umbrella, the pushrod moves upward disengaging the locking device from the guide rod, allowing the lower hub to be moved downward.
40. The umbrella of claim 39, wherein the locking device comprises a moveable locking surface configured to engage the guide rod.
41. The umbrella of claim 40, wherein the locking device comprises a spring configured to move the moveable locking surface to engage the guide rod.
42. The umbrella of claim 40, wherein the moveable locking surface comprises at least one prong configured to engage a corresponding recess of the guide rod when the umbrella is in an open state.
43. The umbrella of claim 39, wherein the pushrod comprises a fixture configured to disengage the locking device when the pushrod moves upward.
44. The umbrella of claim 43, wherein the fixture comprises an angled surface, the angled surface configured to disengage the locking device when the pushrod moves upward.
45. The umbrella of claim 39, wherein the pushrod comprises at least one width that corresponds with a width of an interior space of the guide rod, the corresponding widths configured to prevent the pushrod from deflecting away from the locking device when the pushrod moves upward.
46. The umbrella of claim 39, further comprising a counterweight system disposed within an interior space of the pole.
47. The umbrella of claim 46, wherein the counterweight system comprises a ballast and a cord having a first end coupled with the ballast and a second end coupled with the lower hub.
48. The umbrella of claim 47, wherein the pushrod is actuated by movement of the ballast.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Features of the invention can be better understood from the following detailed description when read in conjunction with the accompanying schematic drawings, which are for illustrative purposes only. The drawings include the following figures:
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DETAILED DESCRIPTION
[0063] While the present description sets forth specific details of various embodiments, it will be appreciated that the description is illustrative only and should not be construed in any way as limiting. Furthermore, various applications of such embodiments and modifications thereto, which may occur to those who are skilled in the art, are also encompassed by the general concepts described herein. Each and every feature described herein, and each and every combination of two or more of such features, is included within the scope of the present invention provided that the features included in such a combination are not mutually inconsistent.
[0064] This application is directed to new umbrella assemblies that facilitate one or both of counterweight assist in the opening and/or closing of large umbrellas and position locking of one or more hubs of an umbrella to enhance stability of the umbrella in an open or closed state. These assemblies can be embodied in or operate with novel hub configurations and designs. A combination of one or more, e.g., one or more pairs, e.g., two pairs of pulleys on or within a pole assembly facilitate movement of the upper and lower hubs as well as a ballast of a counterweight system.
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[0067] The lower hub 124 can be disposed on the pole assembly 104. The lower hub 124 can be moveable along the pole assembly 104. For example, the lower hub 124 can be moved in the downward direction to close the umbrella 100 and moved in the upward direction to open the umbrella 100. The lower hub 124 can include a handle 125 disposed on the pole assembly 104. In some embodiments, the handle 125 can be pulled down and pushed up to move the lower hub 124 along the pole assembly 104. The handle 125 can also function to disengage a locking mechanism of the lower hub 124 as discussed further below. In some embodiments a separate handle 125 may not be needed and a lower hub 124 can function as both a handle and lower hub. The upper hub 120 can be disposed at least partially at or near the upper portion 126 of the pole assembly 104. The upper hub 120 can include a guide rod 121 that is moveable within the pole assembly 104. The guide rod 121 can include an inside passage 122 defined within a hollow space of the guide rod.
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[0069] The counterweight assembly 112 can include a ballast 170 (e.g., as shown in
[0070] As shown in
[0071] When the umbrella is opened, the handle 125 can be pushed upwards moving the lower hub 124 in the upward direction as the length of the cord 180 disposed between the pulley 178 and the lower hub 124 becomes less as more of the cord 180 is disposed between the pulley 178 and the ballast 170. The movement of the lower hub 124 upward will move the ballast 170 downward within the interior of the pole assembly 104. When the umbrella is closed, the handle 125 can be pulled downward which will move the lower hub 124 downward and the ballast 170 will move upward. This movement will cause more length of the cord 180 to be disposed between the pulley 178 and the lower hub 124. Stated another way, the ballast 170 can be configured as a weight that unless restrained will be guided by gravity downward within the space 181 of the pole assembly 104. The downward movement of the ballast 170 will raise or will help to raise the lower hub 124 which will cause the struts 134 and the ribs 138 (together a frame) of the shade assembly 108 to open.
[0072] Although the ballast 170 tends to hold the umbrella 100 in an open configuration absent a user collapsing it, the open position can be secured by one or more locking devices. As discussed above, the locking device 116 secures the elevation of the guide rod 121 relative to the outer pole of pole assembly 104. Also, as discussed further below, one or more hooks 234 disposed within the lower hub 124 can secure the elevation of the lower hub 124 relative to the pole assembly 104.
[0073] A pushrod 190 and a hook assembly 154 (discussed below) can form parts of the locking device 116. The hook assembly 154 can lock the position of the upper hub 120 relative to the pole assembly 104 in an open state. The pushrod 190 can be used to disengage the hook assembly 154 as discussed below. In one convenient configuration the pushrod 190 is operated by movement of the ballast 170 within the space 181 disposed within the pole assembly 104. The distance the pushrod 190 can be moved by the ballast 170 in order to push the pushrod 190 up to the hook assembly 154 can be predetermined. As discussed further below, a wedge element can be used to urge prongs 158 of the hook assembly 154 out of recesses 162 formed in or through the guide rod 121. For example, in some embodiments the ballast 170 can move the pushrod 190 upward a distance L (see
[0074] Limiting movement can be beneficial because it limits the amount of movement necessary to disengage the locking device 116 to allow the umbrella 100 to close when in an open configuration, therefore reducing potential problems due to internal movement of parts. In some embodiments, the ballast 170 continues to move in the upward direction once the pushrod 190 has moved a distance L. The ballast 170 will continue to move in the upward direction which will move the guide rod 121 in the upward direction. In some embodiments, the upward movement of the guide rod 121 can cause the upper hub 120 to move upwards when the umbrella is closing as described herein. In one embodiment, the guide rod 121 is above the ballast and an extender 121A may be provided between a lower end of the guide rod 121 and the ballast 170. The extender 121A can be a member configured to support a compressive load such that as an upward force is applied by the ballast 170 to the lower spacer 216, that load is transferred to the extender 121A and is transferred by the extender 121A to the guide rod 121.
[0075] The hook assembly 154 can be coupled with the intermediate portion 167 of the pole assembly 154. The hook assembly 154 can be covered by a cover 204 to protect the hook assembly 154 from external elements. The hook assembly 154 can include prongs 158. Any number of prongs 158 can be used. For example, one, two, three, or more, prongs 158 can be used. The lowest of the prongs 158 can have an angled lower portion 159 that will engage with the fixture 186 described herein. The prongs 158 are configured to fit into corresponding recesses 162 in or through the guide rod 121. The corresponding recesses 162 can have sufficient space to allow the prongs 158 to engage and disengage from the recesses 162. In the illustrated embodiment, the recesses 162 extend through guide rod 121 but the recesses do not have to extend all the way through the guide rod 121. The guide rod 121 can be positioned in and moveable within the pole assembly 104. The prongs 158 can be urged into the corresponding recesses 162 by a spring 166 to lock the umbrella in an open state. Any suitable spring 166, e.g., a coil spring, a torsion spring, a leaf spring, can be used.
[0076] The pushrod 190 can be part of a pushrod mechanism 174 (e.g., as shown in
[0077] When the umbrella is opened the ballast 170 moves downward. The ballast 170 moving downward allows for the pushrod 190 to move downward and the fixture 186 to move downward. The fixture 186 moving downward can allow the spring 166 of the hook assembly 154 to urge the prongs 158 into the corresponding recesses 162 to lock the umbrella in an open state. The use of two prongs 158 can be beneficial to increase the stability of the umbrella 100 in a locked or open state.
[0078] As described herein, when the umbrella 100 is to be closed the ballast 170 is moved upward. The ballast 170 moving upward pushes the pushrod 190 upward which advances the fixture 186 upward toward the prongs 158. When the angled upper corner 208 of the fixture 186 contacts the angled lower portion 159 of the prongs 158, the fixture 186 disengages the prongs 158 from the corresponding recesses 162. Where the fixture 186 and the lower prong 158 have an angled shape, the prongs 158 more easily disengaging from the corresponding recesses 162. The angled upper corner 208 of the fixture 186 removes the risk of the fixture 186 not disengaging the prongs 158. For example, if the engagement portion of the fixture 186 was square or rectangular shape the disengagement may not be as smooth if the fixture where to get stuck when moving up to disengage the prongs 158. After disengaging the prongs 158 from the corresponding recesses 162, the guide rod 121 can move up which can move the upper hub 120 upwards. As described herein, the upper hub 120 moving upwards when the umbrella 100 closes can prevent or limit the ribs 138 from contacting other objects external to the umbrella 100, such as tables or chairs.
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[0080] The pole assembly 104 can have ring 326 coupled to the upper portion of the pole assembly, as shown in
[0081] As described throughout, the upper hub 120 of the umbrella 100 can move in the upward direction when the umbrella 100 is closed. The lower hub 124 can be moved downward to close the umbrella 100. As described in more detail above, when the lower hub 124 is moved downward, the ballast 170 moves upward pushing the pushrod 190 upward which advances the fixture 186 upward toward the prongs 158 to unlock the umbrella 100. When the pushrod 190 has moved a distance L, as described above, the ballast 170 moving upward can continue to move the extender 121A in the upward direction. The extender 121A can comprise a second pushrod disposed alongside the pushrod 190. The extender 121A moving upward can apply a force to the guide rod 121 and assist the guide rod 121 to move upward, which can assist the upper hub 120 in moving upward. In particular, the upward movement of the extender 121A raises the span of the cord 310 over the lower portion 342 of the opening 338. The ends of the cord 310 at points 330a, 330b are fixed. Raising the span of the cord 310 over the lower portion 342 raises the pulleys 314 relative to the points 330a, 330b, which raises the guide rod 121. While the extender 121A is moving upward (e.g., when closing the umbrella), the length of the cord 310 between points 330a, 330b and the pulleys 314 will decrease, while the length of the cord 310 between the opening 338 and the pulleys 314 will increase. When the extender 121A moves downward (e.g., when opening the umbrella), the length of the cord 310 between points 330a, 330b will increase, while the length of the cord 310 between the opening 338 and the pulleys 314 will decrease. Also, while the extender 121A is moving upward, the length of the extender 121A within the guide rod 121 will increase. When the extender 121A moves downward (e.g., when opening the umbrella), the length of the extender 121A within the guide rod 121 will decrease.
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[0083] The hooks 234 engage with ring 242 to secure the lower hub 124 in a locked state, securing the umbrella 100 in an open state. In one embodiment, the hooks 234 can be used with the locking device 116, described above, to better secure the umbrella 100 in an open state. The ring 242 partially or completely encircles the pole assembly 104. The ledge 246 can engage the hooks 234. The ledge 246 can extend around the entire ring 242 or one or more ledges 246 can be provided at the location of the hooks 234. The lower rounded portion 258 of the hooks 234 are configured to interact with pins 254 to secure and unsecure the lower hub 124 to the pole assembly 104.
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[0086] In the illustrated embodiment, two spacers 274 can be provided. In other embodiments, the spacer 274 can be one piece the encircles the entire diameter of the pole assembly 104. In some embodiments, the pole assembly 104 and the lower hub 124 can be metallic. The lower hub 124 moves along the pole assembly 104 as previously described and the spacer 274 can prevent or limit the wearing down of the pole assembly 104 and the lower hub 124.
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[0089] While certain embodiments of the inventions have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the disclosure. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms. Furthermore, various omissions, substitutions and changes in the systems and methods described herein may be made without departing from the spirit of the disclosure. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the disclosure. Accordingly, the scope of the present inventions is defined only by reference to the appended claims.
[0090] Features, materials, characteristics, or groups described in conjunction with a particular aspect, embodiment, or example are to be understood to be applicable to any other aspect, embodiment or example described in this section or elsewhere in this specification unless incompatible therewith. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive. The protection is not restricted to the details of any foregoing embodiments. The protection extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[0091] Furthermore, certain features that are described in this disclosure in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations, one or more features from a claimed combination can, in some cases, be excised from the combination, and the combination may be claimed as a subcombination or variation of a subcombination.
[0092] Moreover, while operations may be depicted in the drawings or described in the specification in a particular order, such operations need not be performed in the particular order shown or in sequential order, or that all operations be performed, to achieve desirable results. Other operations that are not depicted or described can be incorporated in the example methods and processes. For example, one or more additional operations can be performed before, after, simultaneously, or between any of the described operations. Further, the operations may be rearranged or reordered in other implementations. Those skilled in the art will appreciate that in some embodiments, the actual steps taken in the processes illustrated and/or disclosed may differ from those shown in the figures. Depending on the embodiment, certain of the steps described above may be removed, others may be added. Furthermore, the features and attributes of the specific embodiments disclosed above may be combined in different ways to form additional embodiments, all of which fall within the scope of the present disclosure. Also, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described components and systems can generally be integrated together in a single product or packaged into multiple products.
[0093] For purposes of this disclosure, certain aspects, advantages, and novel features are described herein. Not necessarily all such advantages may be achieved in accordance with any particular embodiment. Thus, for example, those skilled in the art will recognize that the disclosure may be embodied or carried out in a manner that achieves one advantage or a group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.
[0094] Conditional language, such as can, could, might, or may, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements, and/or steps are included or are to be performed in any particular embodiment.
[0095] Conjunctive language such as the phrase at least one of X, Y, and Z, unless specifically stated otherwise, is otherwise understood with the context as used in general to convey that an item, term, etc. may be either X, Y, or Z. Thus, such conjunctive language is not generally intended to imply that certain embodiments require the presence of at least one of X, at least one of Y, and at least one of Z.
[0096] Language of degree used herein, such as the terms approximately, about, generally, and substantially as used herein represent a value, amount, or characteristic close to the stated value, amount, or characteristic that still performs a desired function or achieves a desired result. For example, the terms approximately, about, generally, and substantially may refer to an amount that is within less than 10% of, within less than 5% of, within less than 1% of, within less than 0.1% of, and within less than 0.01% of the stated amount. As another example, in certain embodiments, the terms generally parallel and substantially parallel refer to a value, amount, or characteristic that departs from exactly parallel by less than or equal to 15 degrees, 10 degrees, 5 degrees, 3 degrees, 1 degree, or 0.1 degree.
[0097] The scope of the present disclosure is not intended to be limited by the specific disclosures of preferred embodiments in this section or elsewhere in this specification, and may be defined by claims as presented in this section or elsewhere in this specification or as presented in the future. The language of the claims is to be interpreted broadly based on the language employed in the claims and not limited to the examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive.