Abstract
A fence post extension for extending a length of an existing fence post. The fence post extension has a tubular body and a coupling sleeve. The tubular body has an end section configured to be inserted into an interior space of the exiting fence post via an open end section of the existing fence post. The coupling sleeve is configured to be mounted to the end section of the existing fence post and to surround a portion of the inserted tubular body.
Claims
1. A fence post extension system for extending a length of an existing fence post, the system comprising: a fence post extension including a tubular body having an end section configured to be inserted into an interior space of the exiting fence post via an open end section of the existing fence post; and a coupling sleeve configured to be mounted to the end section of the existing fence post and to surround a portion of the inserted tubular body.
2. The system of claim 1, further comprising one or more tabs extending from one or more corresponding outer surface portions of the tubular body for frictionally engaging inner surfaces in the interior space of the existing fence post.
3. The system of claim 2, wherein the tabs are formed of the same material as the tubular body.
4. The system of claim 1, wherein the tubular body has a unitary construction and is formed from a single piece of material.
5. The system of claim 1, wherein the coupling sleeve has a unitary construction and is formed from a single piece of material.
6. The system of claim 1, wherein the coupling sleeve comprises a unitary body provided with a preselected profile corresponding to a profile of each of the tubular body and existing fence post, the unitary body comprising a plurality of sides, a central open area configured for allowing the passage therethrough of the tubular body when the coupling sleeve is mounted to the existing fence post, and an overhang section extending from the plurality of sides in the direction of the central open area.
7. The system of claim 6, wherein the unitary body further comprises a plurality of L-shaped extension sections provided at corresponding corner regions of the coupling sleeve and extending downwardly from an edge portion of the overhang section, each extension section being spaced from another adjacent extension section by a slotted portion forming an opening or slot configured to align with and accommodate portions of respective optional fasteners used to secure the fence post extension to the existing fence post.
8. The system of claim 7, wherein the unitary body further comprises projection elements extending from respective surfaces of the extension section so as to confront inner surfaces of the sides, each of the projection elements having a free edge spaced apart from the corresponding inner surfaces so as to form space regions, each free edge having a sloped or angled surface extending from an inner surface of the overhang in a diverging manner so that the space regions formed between the free edges and corresponding inner surfaces are provided with a generally triangular, wedge-shaped profile configured to receive and accommodate therein the end section of the existing fence post.
9. A kit comprising a fence post extension system according to claim 1.
10. A fence assembly equipped with the fence post extension system according to claim 1.
11. A fence post extension for extending the length of an existing fence post, the fence post extension comprising: a tubular body having an end section configured to be inserted into an interior space of the exiting fence post via an open end section of the existing fence post, the end section being provided with means for frictionally engaging inner surfaces of the interior space of the existing fence post to securely mount the fence post extension to the existing fence post.
12. The fence post extension system of claim 11, wherein the means for frictionally engaging the inner surfaces of the interior space of the existing fence post comprises one or more tabs extending from one or more corresponding outer surface portions of the tubular body.
13. The fence post extension of claim 12, wherein the tabs are formed of the same material as the tubular body.
14. The fence post extension of claim 12, wherein the tubular body and tabs are of unitary construction and formed from a single piece of material.
15. A coupling sleeve for a fence post extension system, the coupling sleeve comprising: a plurality of sides; a central open area; an overhang section extending from the plurality of sides in the direction of the central open area; a plurality of L-shaped extension sections provided at corresponding corner regions of the coupling sleeve and extending downwardly from an edge portion of the overhang section, each extension section being spaced from another adjacent extension section by a slotted portion forming an opening or slot; and a plurality of projection elements extending from respective surfaces of the extension sections so as to confront inner surfaces of the sides, each of the projection elements having a free edge spaced apart from the corresponding inner surfaces so as to form space regions, each free edge having a sloped or angled surface extending from an inner surface of the overhang in a diverging manner so that the space regions formed between the free edges and corresponding inner surfaces are provided with a generally triangular, wedge-shaped profile.
16. The coupling sleeve of claim 15, wherein the coupling sleeve has a unitary construction and is formed from a single piece of material.
17. The fence post extension of claim 11, further comprising a coupling sleeve integral with an outer surface of the tubular body for coupling the tubular body to the open end section of the existing fence post.
18. The fence post extension of claim 17, wherein the coupling sleeve comprises at least one extension section including at least one hole for receiving a fastener to integrally connect the coupling sleeve to the outer surface of the tubular body.
19. The fence post extension of claim 17, wherein the end section of the tubular body has at least one pair of slots for receiving therein a portion of a fence rail when the end section of the tubular body is inserted into the interior space of the exiting fence post.
20. The fence post extension of claim 19, further comprising one or more tabs extending from one or more corresponding outer surface portions of the tubular body for frictionally engaging inner surfaces in the interior space of the existing fence post; wherein the tubular body and the coupling sleeve are formed in one piece from a single piece of material; and wherein the end section of the tubular body has at least one pair of slots for receiving therein a portion of a fence rail when the end section of the tubular body is inserted into the interior space of the exiting fence post.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0016] The disclosure will provide details in the following description of preferred embodiments with reference to the following figures wherein:
[0017] FIG. 1 is an elevational view in perspective of a fence post extension according to an embodiment of the present invention.
[0018] FIG. 2 is another elevational view in perspective of a fence post extension shown in FIG. 1.
[0019] FIG. 3 is an elevational view of one side of the fence post extension shown in FIG. 1
[0020] FIG. 4 is an elevational view of another side of the fence post extension shown in FIG. 1
[0021] FIG. 5 is a top view of the fence post extension shown in FIG. 4.
[0022] FIG. 6 is a bottom view of the fence post extension shown in FIG. 4.
[0023] FIG. 7 is an exploded view in perspective showing the fence post extension of the present invention illustrated in FIGS. 1-6 in one state of assembly relative to an existing fence post to provide a fence post extension system according to the present invention.
[0024] FIG. 8 is an exploded view in perspective similar to FIG. 7, but illustrating another state of assembly between the fence post extension of the present invention and the existing fence post to provide the fence post extension system according to the present invention.
[0025] FIG. 9 is a perspective view of the fence post extension system according to an embodiment of the present invention.
[0026] FIG. 10 is a perspective view of a partial fence installation incorporating the fence post extension system of the present invention.
[0027] FIGS. 11A-11C illustrate a method of forming the fence post extension in FIG. 1 according to the present invention, where FIG. 11A shows a blank extension piece prior to processing, FIG. 11B shows initial cuts made to the blank extension piece of FIG. 11A for the formation of flap elements, and FIG. 11C shows the flap elements in a folded state and with one of the flap element ready to be cut to form the fence post extension in FIG. 1.
[0028] FIG. 12 is a top view of a coupling sleeve of the fence post extension system according to an embodiment of the present invention.
[0029] FIG. 13 is a top perspective view of the coupling sleeve shown in FIG. 12.
[0030] FIG. 14 is a top view of a coupling sleeve of the fence post extension system according to another embodiment of the present invention.
[0031] FIG. 15 is a side view of the coupling sleeve shown in FIG. 14.
[0032] FIG. 16 is a bottom view of the coupling sleeve shown in FIG. 14.
[0033] FIG. 17A is a top perspective view of the coupling sleeve shown in FIG. 14.
[0034] FIG. 17B is a bottom perspective view of the coupling sleeve shown in FIG. 14.
[0035] FIG. 18A is another side view of the coupling sleeve shown in FIG. 14.
[0036] FIG. 18B is a cross-sectional view taken along the line A-A in FIG. 18A.
[0037] FIG. 19 is a side view similar to FIG. 18A but provided with selected transparent portions to illustrate interior features of the coupling sleeve.
[0038] FIG. 20 is a perspective view of a post extension according to another embodiment of the present invention.
[0039] FIG. 21 is a side view of the post extension shown in FIG. 20.
[0040] FIG. 22 is a bottom view of the post extension shown in FIG. 20.
[0041] FIG. 23 is a perspective view of a post extension according to another embodiment of the present invention.
[0042] FIG. 24 is a perspective view of a post extension according to another embodiment of the present invention.
[0043] FIG. 25 is a perspective view of a post extension according to another embodiment of the present invention.
[0044] FIG. 26 is a side view of the post extension shown in FIG. 25.
[0045] FIG. 27 is a bottom view of the post extension shown in FIG. 25.
[0046] FIG. 28 is a perspective view of a post extension according to another embodiment of the present invention.
[0047] FIG. 29 is a perspective view of a post extension according to another embodiment of the present invention.
[0048] In FIGS. 1-29, the same reference numerals denote the same elements.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0049] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the general description, serve to explain the principles of the invention. The figures are intended for representative purposes only and should not be considered limiting in any respect. Throughout the drawings, the same reference numerals denote the same elements.
[0050] Vinyl fences are often made with PVC (polyvinyl chloride) as the main ingredient, along with other elements like polyvinyl acetate. The quality of a vinyl fence can vary depending on the components used. Vinyl fences can be durable, weather-resistant, and low maintenance, and they can last longer than other types of fences depending on the additives used.
[0051] The fence post extension systems and method of the present invention are designed to extend the height or length of existing fence posts, providing an adaptable solution for various fencing needs. While initially developed for vinyl fences, the system and methods are versatile and applicable to fences made of other types of materials consistent with the scope of the present invention.
[0052] The fence post extension systems and methods of the present invention offer a more reliable, aesthetically pleasing, and user-friendly solution for homeowners looking to extend their fences. According to the present invention, the fence post extension system allows one to raise the height of a vinyl fence to provide the following benefits, among others: enhance privacy by making it more difficult for people to see over the fence; deter intruders; keep pets or small children safely contained within a yard; act as windbreaks, providing additional shelter for your garden or outdoor living space; and help reduce noise from nearby streets or neighbors, creating a quieter outdoor environment. The post extension systems according to the present invention are configured to add a decorative element to an existing vinyl fence, giving it a more customized and polished appearance and enhancing the curb appeal of one's home, potentially increasing its value. The fence post extension systems of the present invention are particularly configured to provide the flexibility to adjust the fence height according to one's needs without replacing the entire fence, saving time and money.
[0053] In one aspect, the present invention is directed to a post extension system. In another aspect, the present invention is directed to a post extension for the post extension system. In yet another aspect, the present invention is directed to a coupling sleeve for the post extension system. Still other objects of the present invention are directed to methods for forming the post extensions and for installing the post extension systems. Details of the features and advantages of these and other aspects and embodiments of the present invention are described below with reference to the drawings.
[0054] FIGS. 1-6 show a fence post extension, generally designated at 10, according to an embodiment of the present invention. FIGS. 12-13 and FIGS. 14-19 show embodiments of coupling sleeves, generally designated at 40, 50, according to embodiments of the present invention. FIGS. 7-8 show fence post extension 10 in the process of being mounted to an existing fence post of tubular construction generally designated at 20. FIG. 9 shows a fence post extension system according to the present invention comprising fence post extension 10, coupling sleeve 40 or 50, and a fence post end cap (optional) generally designated at 80. FIG. 10 shows a partial fence installation, generally designated at 100, incorporating the fence post extension system of the present invention.
[0055] Referring to FIGS. 1-6, fence post extension 10 (hereinafter also referred to as extension) comprises a hollow structure in the form of a tubular body 12 with open opposite ends communicating with a hollow interior space 13 extending through the length of tubular body 12 from one open end to the other open end. As a feature of the present invention, tubular body 12 is configured to be inserted into and received by a hollow interior space 21 of fence post 20, accessible via an open end 20a bounded by edges 22-25 of post 20, which has a profile similar to that of tubular body 12 as shown in FIGS. 7-9 and further described below. In the present embodiment, extension tubular body 12 has a generally square profile with preselected length A1 (FIG. 3) and width A2 (FIG. 4). The length of tubular body 12 can be varied (as denoted by numeral 18) to provide a desired extension height for the fence. According to a feature of the present invention, the dimensions of tubular body 12 are selected so that tubular body 12 can be inserted or slid into space 21 of fence post 20 such as in a telescoping manner. For example, tubular body 12 can be approximately 4 inches by 4 inches (44) and fence post 20 can be approximately 5 inches by 5 inches (55) configured to fit over tubular body 12. In this regard, the inside dimensions of fence post 20 would be slightly less than 55 to fit snugly over tubular body 12. It will be appreciated that tubular body 12 and fence post sleeve 20 are not limited to the foregoing profile and dimensions, and that other profiles and dimensions can be selected for tubular body 12 and fence post 20 in accordance with the scope of the present invention.
[0056] According to another feature of the present invention, fence post extension 10 includes securing means for securing tubular body 12 to fence post 20. In one embodiment, the securing means comprises one or more tension elements in the form of tabs 14, 16 extending from outer surface portions of tubular body 12, as shown in FIGS. 1-6. Tabs 14,16 are configured to frictionally engage corresponding inner wall surface portions of fence post 20 when tubular body 12 is inserted into space 21 of fence post 20 as illustrated in FIGS. 7-9. Tabs 14, 16 are particularly configured to generate and apply sufficient frictional force to secure tubular body 12 to post 20 without the necessity of using additional connectors. In an alternative embodiment, the securing means may further comprise separate connectors (e.g., hardware) to further secure tubular body 12 to post 20 as further described below.
[0057] In the exemplary embodiment illustrated in FIGS. 1-9, extension 10 is provided with four tabs each extending from one of the four sides of tubular body 12. More specifically, two tabs 14 extend from two respective opposing sides of tubular body 12 and two tabs 16 extend from the other two respective opposing sides of tubular body 12. As shown in FIGS. 2-4, tabs 14 and 16 are configured to be bent along respective bend lines 14a, 16a relative to the corresponding side surfaces of tubular body 12. This allows selective bending of tabs 14, 16 to vary the angle of tabs 14, 16 relative to corresponding side surfaces of tubular body 12 for adjusting and/or varying (e.g., increasing/decreasing) the frictional engagement between tabs 14, 16 of tubular body 12 and the inner surface of post 20, such as when tubular body 12 is further inserted into space 21 of post 20. By this construction, tabs 14, 16 form spring loaded elements configured to engage the inner surface of post 20 with customizable friction levels.
[0058] Tubular body 12 is also provided with four slots 15, 17 corresponding to respective four tabs 14, 16 as shown in FIGS. 1-6. Slots 15, 17 extend along respective sides and are open at an end 12a of tubular body 12. Slots 15 are configured to facilitate assembly of the fence post extension system of the present invention by allowing tubular body 12 to clear insertion of tubular body 12 into post 20 by allowing the passage therethrough of a conventional rail 30 (FIGS. 7-9) of the fence assembly. In the illustrated embodiment, tabs 14 and 16 are positioned at respective preselected distances B, C (FIGS. 3-4) extending from end 12a of tubular body 12 to respective bending lines 14a, 16a. Distances B, C also correspond to the respective lengths of slots 15, 17 between end 12a of tubular body 12 and respective bend lines 14a, 16a.
[0059] As illustrated in FIGS. 3-6, tabs 14 extend from two opposite sides of tubular body 12 and in general alignment with one another (FIG. 4), and tabs 16 extend from the other two opposite sides of tubular body 12 and in general alignment with one another (FIG. 3). Corresponding slots 15, 17 are similarly configured. It will be appreciated that the number of tabs 14, 17 and corresponding slots 15, 17 as well as the positions of the tabs and slots relative one another and to the surfaces of tubular body 12 can be varied consistent with the scope of the present invention, e.g., to facilitate insertion of tubular body 12 into post 20 and frictional engagement between tubular body 12 and inner surface portions of post 20 as disclosed herein.
[0060] FIGS. 11A-11C illustrate a method of forming tabs 14, 16 according to an exemplary embodiment of the present invention. According to this exemplary embodiment, and as a feature of the present invention, tabs 14, 16 are formed from the material of tubular body 12 itself by a process as further described below. This results in fence post extension 10, including tubular body 12 and tabs 14, 16, having a unitary structure formed of a single piece of material (e.g., vinyl material).
[0061] In the present embodiment, the process of forming tabs 14, 16 starts by providing tubular body 12 as shown in FIG. 11A with a profile and overall dimensions corresponding to existing fence post 20 to be extended. The length A1 of tubular body 12 is also selected consistent with the length of post 20 to be extended, taking into consideration the length of the section of tubular body 12 required to be inserted into space 21 of post 20 to bring tabs 14, 16 into frictional engagement with the respective inner wall surface portions of post 20. Tabs 14, 16 are formed by initially making preselected cuts along respective cut lines 15a, 17a as shown in FIG. 11B. Cut lines 15a, 17a extend end 12a of tubular body 12 up to regions of tubular body 12 corresponding to respective bend lines 14a, 16a of tabs 14, 16. Cut lines 15a, 17a can be made using a suitable cutting tool, such as any saw or cutter suitable for cutting vinyl or PVC material, for example.
[0062] After cuts 15a, 17a are made as described above and shown in FIG. 11B, the cut portions of tubular body 12 are bent or folded upward to form corresponding slots 15, 17 as shown in FIG. 11C. In this exemplary embodiment, the cut portion which is folded to form slot 15 is denoted by numeral 14c, and the cut portion which is folded to form slot 17 corresponds to tab 16. Portion 14c is then cut along a cut line 14b to form tab 14, while no further cuts are required to form tab 16. After the cutting along cut line 14b, post extension 10 shown in FIGS. 1-6 is obtained.
[0063] FIGS. 7-9 illustrate an exemplary embodiment of the use of the fence post extension system according to the present invention to extend the height of existing fence post 20. FIG. 7 shows a configuration in which rail 30 of the fence assembly has been passed through post 20 as is conventionally known in the art. To facilitate comprehension, only relevant sections of rail 30 are shown in FIG. 7, including a portion 30a of rail 30 extending through post 20. FIG. 7 also shows the state in which post extension 10 aligned with post 20 and in the process of being inserted into interior space 21 of post 20, while FIG. 8 shows the state in which post extension 10 has been inserted into interior space 21 of post 20. During the insertion process, slots 15 formed in tubular body 12 are aligned with portion 30a of rail 30 so that post extension 10 is permitted to travel into space 21 of post 20 for a preselected distance until portion 30 contacts a region of tubular body 12 proximate bending lines 14a of tabs 14, at which point tubular body 20 rests on portion 30a of rail 30. This preselected distance that tubular body 12 is permitted to travel into space 21 of post 20 corresponds generally and approximately to preselected distance B shown in FIG. 3. By this construction, slots 15 of tubular body 12 define means for limiting the extent to which tubular body 12 is inserted into space 21 of post 20.
[0064] Prior to inserting post extension 10 into space 21 of post 20, the angular positions of tabs 14, 16 relative to the corresponding side surfaces of tubular body 12 are adjusted by bending tabs 14, 16 about respective bending lines 14a, 16a to achieve a preselected degree of frictional resistance between bending tabs 14, 16 and inner surface portions of post 20. With post extension 10 aligned relative to post 20 as shown in FIG. 7, post extension 10 is inserted into space 21 while tabs 12, 14 engage the inner surface portions of post 20 with the preselected degree of frictional resistance sufficient to secure tubular body 12 to post 10. This secure connection is further attained when tubular body 12 reaches a position in which it contacts (i.e., rests on) portion 30a of rail 30 as described above.
[0065] FIG. 8 shows the configuration in which post extension 10 has been inserted into space 21 of post 20. In this configuration, a portion of post 20 proximate open end 20a overlaps a corresponding inserted portion of post extension 10, that is, overlaps a surface portion of tubular body 12 in a region immediately below the line denoted by 12c, for example, shown in FIG. 7. This defines an overlapping region between post 20 and tubular body 12 that is configured for receiving suitably fasteners (e.g., screws, bolts) to further secure tubular body 12 to post 20, in addition to the frictional connection provided by tabs 14, 16 as described above.
[0066] In the state shown in FIG. 8, one of the coupling sleeves 40, 50, as described below with reference to FIGS. 12-13 and 14-19, respectively is mounted to end 20a of post 20 so as to completely surround and cover end 20a of post 20 along with the overlapping region between post 20 and tubular body 12, including any fasteners applied in the overlapping region. An optional end cap 80 is mounted to end 12b of tubular body 12. End cap 80 helps maintain the structural integrity of extension post 10 and to eliminate sharp edges or corners at the top of extension post 10, and provides a finished, polished look to the resulting fence assembly (FIG. 10).
[0067] Referring to the exemplary embodiment shown in FIGS. 12-13, coupling sleeve 40 comprises a unitary body having four sides 42, 44, 46, 48 forming a square shape conforming to the square shape of tubular body 12 and fence post 20 described above. An open area 41 provided in the center of the unitary body is bordered by sides 42, 44, 46, 48 and functions as a pass-through space for extension post 10 as further described below. An overhang section 49 extends from top edges of sides 42, 44, 46, 48 in the direction of open area 41, terminating with an edge portion 49a as shown in FIGS. 12-13. The unitary body of coupling sleeve 40 is preferably formed of a single piece of material, such as PVC.
[0068] In the state shown in FIG. 8, coupling sleeve 40 is mounted to post 20 by passing end 12b of tubular body 12 through open area 41 of sleeve 40 and sliding sleeve 40 along tubular body 12 until inner surface portions of overhang section 49 engages edge portions 22-25 of post 20 while edge portion 49 of overhang section 40 engages corresponding surrounding surface portions of tubular body 12 as shown in FIG. 9. In this configuration, sleeve 40 completely surrounds and covers end 20a of post 20 along with the overlapping region between post 20 and tubular body 12, including any fasteners applied in the overlapping region.
[0069] FIGS. 14-19 shows coupling sleeve 50 in accordance with another exemplary embodiment of the present invention. Sleeve 50 comprises a unitary body having four sides 52, 54, 56, 58 with respective lower edges 52a, 54a, 56a, 58a, inner surfaces 52b, 54b, 56b, 58b and corresponding corner regions. Sleeve 50 has a square profile conforming to the square shape of tubular body 12 and fence post 20 described above. An open area 51 provided in the center of the unitary body is bordered by sides 52, 54, 56, 58 and functions as a pass-through space for extension post 10 as further described below. An overhang section 59 with an inner surface 59a extends from top edges of sides 52, 54, 56, 58 in the direction of open area 51, terminating with an edge portion 59b as shown in FIGS. 14, 16 and 17a-17b. The unitary body of coupling sleeve 50 is preferably formed of a single piece of material, such as PVC.
[0070] According to a feature of the present invention shown in FIGS. 16, 17a-17b, a plurality (i.e., four in this embodiment) of L-shaped extension sections 60 (i.e., each having two leg portions) are provided in the corresponding corner regions of sleeve 50 and extend downwardly from edge portion 59b of overhang section 59. Each extension section 60 is spaced from another adjacent extension section 60 by a slotted portion forming an opening or slot 64 (i.e., four openings or slots 64). When coupling sleeve 50 is mounted on existing fence post 20, slots 64 are configured to align with and accommodate portions of respective fasteners (e.g., screws, bolts or pins) which may have been used to further secure post extension 10 to post 20 as described above. Slots 64 are dimensioned so as to allow a range of adjustability to facilitate accommodation of the fastener portions during mounting of sleeve 50 on post 20.
[0071] Projection elements 62 extend from respective surfaces of the leg portions of extension section 60 confronting inner surfaces 52b, 54b, 56b, 58b of sides 52, 54, 56, 58. A total of eight projection elements 62 are provided, that is, one projection element 62 is associated with each of the two leg portions of the four extension sections 60 so that two (a pair) projection elements 62 extend in the direction of a corresponding side 52, 54, 56, 58 of sleeve 50 as shown in FIG. 16. Projection elements also extend downwardly from inner surface 59a of overhang portion 59 and along the corresponding leg portions as shown in FIGS. 18b and 19. Free edges of each pair of projection elements 62 are spaced apart from corresponding inner surfaces 52b, 54b, 56b, 58b of sides 52, 54, 56, 58 so as to form space regions 66 (hereinafter also space) as shown in FIGS. 16, 18b and 19.
[0072] As another feature of the present invention illustrated in FIGS. 18B, 19, the free edge of each projection element 62 has a sloped or angled surface extend from inner surface 59a of overhang 59 in a diverging manner. By this construction, each space 66 formed between the free edge of each projection element 62 and the corresponding inner surface 52b, 54b, 56b, 58b of 52, 54, 56, 58 is provided with a generally triangular, wedge-shaped configuration as illustrated by arrows 68 in FIG. 19. Wedge-shaped spaces 66 are configured to receive and accommodate therein corresponding edges 22-26 (FIG. 8) of existing fence post 20 when sleeve 50 is mounted to existing fence post 50 as described below.
[0073] In the state shown in FIG. 8, coupling sleeve 50 is mounted to post 20 by passing end 12b of tubular body 12 through open area 51 of sleeve 50 and sliding sleeve 50 along tubular body 12 towards edges 22-25 of post 20. Sleeve 50 is then adjusted so that wedge-shaped spaces 66 of sleeve 50 become aligned with corresponding edges 22-25 of post 20, at which point sleeve 50 is pressed down so that edges 22-25 are pushed into corresponding spaces 66 until edges 22-25 are brought into contact with inner surface 59a of overhang section 59, at which point sleeve 50 completely surrounds and covers end 22-25 of post 20 along with the overlapping region between post 20 and tubular body 12. The assembled state of sleeve 50 relative to post extension 10 and existing fence post 20 is shown in FIG. 9.
[0074] According to a feature of the present invention, when edges 22-25 of post 20 are inserted into corresponding wedge-shaped spaces 66, the forces exerted by edge 22-25 are distributed over a larger surface area. This distribution reduces the pressure on any single point, preventing damage and ensuring a more even and stable connection. This wedge shape or slope increases the contact area between edges 22-25 and receiving spaces 66. As edges 22-25 are pushed into wedge-shaped spaces 66, the friction between the surfaces increases, which helps to hold the edges of sleeve 50 firmly in place. The steeper the angle of wedge-shaped spaces 66, the greater the frictional forces. Furthermore, wedge-shape spaces 66 inherently provide a self-locking mechanism. When a load or force is applied coupling sleeve 50 while being mounted to existing fence post 20, it pushes edges 22-25 of post 20 further into wedge-shaped spaces 66, increasing the friction and holding edges 22-25 more securely. This makes the connection between coupling sleeve 50 and post 20 resistant to loosening under stress or vibration. Wedge-shape spaces 66 also help guide edges 22-25 of post 20 into the correct position, ensuring proper alignment. Once in place, the angled surfaces of the free edges of projection elements 62 of coupling sleeve 50 prevent lateral movement, adding to the overall stability of the connection.
[0075] As described above, after post extension 10 is inserted into existing fence post 20 as shown in FIG. 8, post extension 10 may be further optionally secured to post 20 by applying suitable fasteners at the overlapping region between post 20 and tubular body 12. In the case that such securing fasteners have been used, when edges 22-25 of post 20 are inserted into corresponding wedge-shaped spaces 66 during mounting of sleeve 50 on post 20 as described above, slots 64 are positioned in the overlapping region and become aligned with and accommodate portions of the corresponding fasteners. Slots 64 are dimensioned so as to allow a range of adjustability to facilitate accommodation of the fastener portions during mounting of sleeve 50 on post 20.
[0076] By the foregoing construction, and as another feature of the present invention, it will be appreciated that sleeve 50 is symmetrical about horizontal and vertical lines D, E extending through central regions of openings 64 as shown in FIG. 14. This symmetrical construction of sleeve 50 helps provide even distribution of weight and forces when sleeve 50 mounted to existing fence post 20 and extension post 10 as described above, contributing to structural stability and strength.
[0077] FIG. 10 illustrates a section of a fence assembly 100 with existing fence 120 equipped with the fence post extension system, including post extension 10, according to the present invention. The fence post extension system of the invention provides a practical solution for increasing the height of existing fence 110, offering several benefits including enhanced privacy, security, and aesthetic appeal. The fence post extension system also provides a versatile platform for adding decorative structures, generally designated at 120, between post extensions 10, allowing for personalized and creative designs. Examples of such decorative structures include, without limitation, lattice panels, trellises, or hanging planters which enhance the visual appeal of fence assembly 100.
[0078] As another aspect, the fence post extension system of the present invention can be implemented (e.g., manufactured and/or distributed) as a fence post extension kit offering a comprehensive package with all the necessary components for easy installation. In addition to providing a convenient solution for extending the height of existing fence posts, the kit simplifies the process and ensures compatibility between the extensions and existing posts. The kit preferably contains all required parts of the fence post extension system, including post extension 10 and coupling sleeve 40 and/or 50, along with optional fasteners and decorative elements, eliminating the need to purchase components separately. The kit also preferably includes detailed installation instructions, making the installation process straightforward even for do-it-yourself (DIY) enthusiasts.
[0079] According to a feature of the present invention, fence post extension kits are not only convenient for initial installation but can also be adapted to offer replacement parts sold separately, including post extension 10 and coupling sleeves 40, 50. This flexibility ensures that users can maintain and repair their fences over time without needing to purchase an entire new kit.
[0080] The embodiments of the post extension 10 described above with reference to FIGS. 1-6 include two sets of tabs 14, 16 and two corresponding slots 15, 17. In an alternative embodiments, post extension 10 can be provided with only one set of tabs 14 or 16 and one set of corresponding slots 15, 17, or with more than two sets of tabs 14, 16 and more than two sets of corresponding slots 15, 17. In other alternative embodiments, the locations of the tabs along tubular body 12 can be varied from the locations shown in FIGS. 1-6 provided that the specific alternative locations for the tabs are selected to accommodate insertion of post extension 10 into existing fence post 20 as described above with reference to FIGS. 7-9. In yet other alternative embodiments, post extension 10 can be provided with the slots but without the tabs, or without the tabs and the corresponding slots. When extension post 10 is not provided with slots 15 as shown in FIGS. 1-3, for example, which are configured for clearing portion 30a of rail 30, the portion of tubular body 12 below corresponding sleeve 40, 50 is shortened so that a lower end of post extension 10 inserted into existing fence post 20 rests on portion 30a of rail 30 while sleeve 40, 50 is assembled relative to open end 20a of post 20, as described above.
[0081] FIGS. 20-29 show post extensions, generally designated with numerals 200, 300, 400, 500, 600, 700, according to additional exemplary embodiments of the present invention. Each post extension 200, 300, 400, 500, 600, 700 is configured for connection to existing post 20, such as shown in FIGS. 7-9, to form corresponding fence post extension systems for use in fence assembly 100, such as shown in FIG. 10.
[0082] FIGS. 20-22 show post extension 200 which differs from above-described post extension 10 in that in post extension 200, tubular member 12 and a coupling sleeve 90 are preassembled together prior to post extension 200 being connected to existing post extension 20. Sleeve 90 has the same construction as sleeve 50 described above with reference to FIGS. 14-19, except that sleeve 90 in FIGS. 20-22 is additionally provided with connection holes 61 configured for receiving suitable fasteners (not shown) to integrally and securely fasten sleeve 90 to tubular member 12. Another difference is that extension sections 60 of sleeve 90 in FIGS. 20-22 are increased in length to accommodate placement of connection holes 61. The types of fasteners that can be used for connecting sleeve 90 to tubular sleeve 12 via connection holes 61 include screws, nails, pins, rivets, bolts, for example, without limitation.
[0083] By the foregoing construction, it will be appreciated that with sleeve 90 and tubular member 12 being preassembled together as described above, post extension 200 forms an integrated or integral structure configured to be handled as a unit during connection to existing fence post 20 as described above with reference to FIGS. 7-9. More specifically, post extension 200 is inserted into post 20 until wedge-shaped spaces 66 of sleeve 90 engages corresponding edges 22-25 of post 20 as described above with reference to FIGS. 7-9. The engagement of tabs 14, 16 of post extension 200 with inner surfaces of post 20 during assembly is as described above for FIGS. 7-9. The integrated structure formed by tubular member 12 and sleeve 90 obviates the need for separately attaching sleeve 90 to post extension 200 after post extension 200 is inserted into post 20.
[0084] Thus, the integrated construction of post extension 20 streamlines and simplifies the process of connecting post extension 200 to existing fence post 20. When handling post extension 200 for installation to existing fence post 20, an installer deals with a single, cohesive unit rather than multiple separate components. This reduces the complexity of the installation process, making it easier and quicker to align and position post extension 200 with the existing fence post 20. The integrated structure ensures that the components of post extension 200 are already correctly aligned relative to each other. This pre-alignment means that when post extension 200 is brought to existing fence post 20, there is less need for adjustments, further expediting the installation. Furthermore, with post extension 200 already assembled as a unit, the number of fastening points and the overall complexity of the connection are reduced. One simply connects the entire unit to existing post 20, which can be done more quickly. The connection between post extension 200 and existing post 20 is also stronger and more secure. This enhances the durability and stability of the final assembly of the fence post extension system. In summary, the integrated construction of post extension 200 allows for a more efficient and reliable connection to existing fence post 20 by reducing the complexity, time, and effort required for installation.
[0085] FIG. 23 shows another exemplary embodiment of the post extension, generally designated with numeral 300, according to the present invention. Post extension 300 has the same construction as post extension 200 described above with reference to FIGS. 20-22, except that post extension 300 does not include tabs 14, 16. Post extension 300 is assembled with existing post 20 as described above for post extension 200, except that the connection of post extension 300 does not involve the frictional engagement between tabs 14, 16 and the interior surface of post 20 as described above for post extension 200. A secure connection between post extension 300 and post 20 is achieved by the engagement between wedge-shaped spaces 66 of sleeve 90 and corresponding edges 22-25 of post 20 as described above.
[0086] FIG. 24 shows another exemplary embodiment of the post extension, generally designated with numeral 400, according to the present invention. Post extension 400 has the same construction as post extension 200 described above with reference to FIGS. 20-22, except that post extension 400 does not include tabs 14, 16 and corresponding slots 15, 17. Post extension 400 is assembled with existing post 20 as described above for post extension 200, except that the connection of post extension 400 does not involve the frictional engagement between tabs 14, 16 and the interior surface of post 20 as described above for post extension 200. Furthermore, since post extension 400 does not include at least slots 15 as provided in post extension 200, the section of tubular member 12 below sleeve 90, as generally denoted by the letter F, is also shortened to allow post extension 400 to be inserted into existing post 20 without interference from portion 30a of rail 30 (e.g., refer to FIG. 7). The length of section F of tubular member 12 is selected so as to allow section F to rest on portion 30a of rail 30 while achieving the corresponding engagement between wedge-shaped spaces 66 of sleeve 90 and corresponding edges 22-25 of post 20 as described above, thereby achieving a secure connection between post extension 400 and post 20.
[0087] FIGS. 25-27 show another exemplary embodiment of the post extension, generally designated by numeral 500, according to the present invention. Post extension 500 is also in the form of an integrated or integral structure configured to be handled as a unit during connection to existing fence post 20 as described above with reference to FIGS. 7-9. Post extension 500 differs from post extension 200 described above with reference to FIGS. 20-22 in that in post extension 500, a sleeve 95 is formed in one piece with tubular member 12 to form post extension 500. More specifically, post extension 500 is pre-fabricated in one piece with tubular member 12 and sleeve 95 by an injection molding or extrusion molding process, for example, from a suitable synthetic plastic polymer, such as polyvinyl chloride (PVC). Sleeve 95 differs from sleeve 50 and 90 of the above-described embodiments in that sleeve 95 is not formed with extension sections 60. Instead, projections 62 are formed in one piece with tubular body 12 so as to define corresponding wedge-shaped spaces 66 between projections 62 and the outer surface of tubular body 12 as shown in FIGS. 25 and 27. When forming the post extension system, post extension 500 is inserted into existing post 20 so that tabs 14, 16 frictionally engage the inner surface of post 20 as described above for post extensions 10 and 200. Post extension 500 is inserted into post 20 until wedge-shaped spaces 66 receive firmly engage corresponding edges 22-25 of post 20 as described above, thereby securely connecting post extension 500 to post 20.
[0088] While post extension 500 has been described above as being formed in one piece from a single piece of material, it will be appreciated that other methods are suitable for forming post extension 500 as a one-piece structure. For example, tubular member 12 and sleeve 95 can be initially manufactured as separate structures and then be integrally connected together to form an integrated, one-piece structure before connecting post extension 500 to existing post 20. In an exemplary embodiment, tubular member 12 and sleeve 95 can be integrated together by adhering sleeve 95 to the outer surface of tubular member 12, such as by using a suitable adhesive (e.g., solvent-based adhesive, cyanoacrylate, epoxy, and UV-curable adhesives) and welding (e.g., plastic welding, ultrasonic welding), without departing from the scope of the present invention.
[0089] According to the present invention, forming fence extension post 500 with a one-piece construction offers several benefits, particularly in terms of structural integrity, ease of installation, and cost efficiency. A one-piece construction creates a stronger fence extension post. Installing a one-piece post extension is generally quicker and easier, as there is no need to assemble multiple parts or ensure proper alignment of separate components. This reduces the chances of installation errors. With the tubular body 12 and sleeve 95 formed together, each post extension 500 will have consistent dimensions and properties, ensuring uniformity across the fence. Furthermore, the one-piece design of post extension 500 simplifies the manufacturing process, reducing the number of steps and potentially lowering labor and production expenses.
[0090] FIG. 28 shows another exemplary embodiment of the post extension, generally designated with numeral 600, according to the present invention. Post extension 600 has the same construction as post extension 500 described above with reference to FIGS. 25-27, except that post extension 600 does not include tabs 14, 16. Post extension 600 is assembled with existing post 20 as described above for post extension 200, except that the connection of post extension 600 does not involve the frictional engagement between tabs 14, 16 and the interior surface of post 20 as described above for post extension 200. A secure connection between post extension 600 and post 20 is achieved by the engagement between wedge-shaped spaces 66 of sleeve 95 and corresponding edges 22-25 of post 20 as described above.
[0091] FIG. 29 shows another exemplary embodiment of the post extension, generally designated with numeral 700, according to the present invention. Post extension 700 has the same construction as post extension 500 described above with reference to FIGS. 25-27, except that post extension 700 does not include tabs 14, 16 and corresponding slots 15, 17. Post extension 400 is assembled with existing post 20 as described above for post extension 200, except that the connection of post extension 700 does not involve the frictional engagement between tabs 14, 16 and the interior surface of post 20 as described above for post extension 200. Furthermore, since post extension 700 does not include at least slots 15 as provided in post extension 200, the section of tubular member 12 below sleeve 90, as generally denoted by the letter G, is also shortened to allow post extension 700 to be inserted into existing post 20 without interference from portion 30a of rail 30 (e.g., refer to FIG. 7). The length of section G of tubular member 12 is selected so as to allow section G to rest on portion 30a of rail 30 while achieving the corresponding engagement between wedge-shaped spaces 66 of sleeve 95 and corresponding edges 22-25 of post 20 as described above, thereby achieving a secure connection between post extension 700 and post 20.
[0092] Reference in the specification to one embodiment or an embodiment or one aspect and another aspect of the present invention, as well as other variations thereof, means that a particular feature, structure, characteristic, and so forth described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase in one embodiment or in an embodiment, or in one aspect or in another aspect as well any other variations appearing in various places throughout the specification are not necessarily all referring to the same embodiment. However, it is to be appreciated that features of one or more embodiments and aspects can be combined given the teachings of the present invention provided herein.
[0093] The foregoing is to be understood as being in every respect illustrative and exemplary, but not restrictive, and the scope of the invention disclosed herein is not to be determined from the Detailed Description, but rather from the claims as interpreted according to the full breadth permitted by the patent laws. It is to be understood that the embodiments shown and described herein are only illustrative of the present invention and that those skilled in the art may implement various modifications without departing from the scope and spirit of the invention. Those skilled in the art could implement various other feature combinations without departing from the scope and spirit of the invention. Having thus described aspects of the invention, with the details and particularity required by the patent laws, what is claimed and desired protected by Letters Patent is set forth in the appended claims.
