US20110180773A1 - Fence post cap - Google Patents
Fence post cap Download PDFInfo
- Publication number
- US20110180773A1 US20110180773A1 US12/971,984 US97198410A US2011180773A1 US 20110180773 A1 US20110180773 A1 US 20110180773A1 US 97198410 A US97198410 A US 97198410A US 2011180773 A1 US2011180773 A1 US 2011180773A1
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- United States
- Prior art keywords
- wall
- sheet metal
- cap
- upper edge
- dimple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000002184 metal Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 8
- 210000002105 tongue Anatomy 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/006—Caps or covers for posts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/20—Posts therefor
Definitions
- This invention relates to a fence post cap, an assembly including a fence post cap, and a method of making a fence post cap.
- a post cap is typically fitted over the top of the post and secured in place by screws, nails, or an adhesive. It is often required that the fence post have a completely level top surface so that the post cap itself will be level. This may require cutting the top of the fence post level in the field, but such a procedure is labour intensive.
- This invention seeks to provide an improved fence post cap.
- a fence post cap is fabricated with inwardly directed protrusions so that, during installation on a fence post, the cap is press fit to the post.
- a fence post cap is fabricated of a thin-walled material.
- the structure has a cap portion above a plurality of depending walls.
- a first wall of the walls has an inwardly and upwardly extending thin-walled first protrusion with a first upper edge providing a mouth between said first wall and said first upper edge.
- a second wall of the walls, opposed to said first wall, has an inwardly and upwardly extending thin-walled second protrusion with a second upper edge providing a mouth between said second wall and the second upper edge.
- a unitary fence post cap is fabricated of sheet metal with a sheet metal cap portion above a plurality of depending sheet metal walls.
- a first wall has an inwardly extending bent sheet metal portion.
- a second wall opposite the first wall, has an inwardly extending bent sheet metal portion.
- the inwardly extending bent sheet metal portions are positioned so that they are opposite one another such that a shortest distance between the first wall adjacent the first wall inwardly extending bent sheet metal portion and the second wall adjacent the second wall inwardly extending bent sheet metal portion is greater than a shortest distance between the first wall inwardly extending bent sheet metal portion and the second wall inwardly extending bent sheet metal portion.
- a fence post cap is fabricated of a thin-walled material with a cap portion above a plurality of depending walls.
- a first wall has an inwardly extending thin-walled first dimple.
- a second wall, opposed to said first wall, has an inwardly extending thin-walled second dimple.
- the first dimple has a first dimple wall inclining inwardly and upwardly to a first upper edge. The first upper edge is separated from an adjacent portion of the first wall and the first dimple wall has a notch extending from the first upper edge.
- the second dimple has a second dimple wall inclining inwardly and upwardly to a second upper edge, the second upper edge being separated from an adjacent portion of the second wall.
- the second dimple wall has a notch extending from the second upper edge.
- a method of making a fence post cap involves die punching a single piece of sheet metal so as to form a first unitary structure having a sheet metal cap portion and a plurality of depending sheet metal walls. The method continues with die punching the first unitary structure so that a first wall of the walls has an inwardly extending bent sheet metal portion and an opposite second wall has an inwardly extending bent sheet metal portion, where the first wall inwardly extending bent sheet metal portion is opposed to the second wall inwardly extending bent sheet metal portion and a shortest distance between the first wall adjacent the first wall inwardly extending bent sheet metal portion and the second wall adjacent the second wall inwardly extending bent sheet metal portion is greater than a shortest distance between the first wall inwardly extending bent sheet metal portion and the second wall inwardly extending bent sheet metal portion.
- FIG. 1 is a partially cut-away perspective view of a fence post cap made in accordance with an embodiment of this invention
- FIG. 1A is a bottom plan view of the cap of FIG. 1 ,
- FIG. 2 is a cross-sectional fragmentary view along the lines 2 - 2 of FIG. 1 ,
- FIG. 3 is a perspective view of the cap of FIG. 1 installed on a fence post
- FIG. 4 is a schematic view of a die for making the cap of FIG. 1 .
- FIG. 5 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention.
- FIG. 6 is a cross-sectional fragmentary view along the lines 6 - 6 of FIG. 5 .
- FIG. 7 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention.
- FIG. 8 is a cross-sectional fragmentary view along the lines 8 - 8 of FIG. 7 .
- FIG. 9 is a cross-sectional fragmentary view of a cap made in accordance with a further embodiment of this invention.
- FIG. 10 is a cross-sectional fragmentary view of a cap made in accordance with yet another embodiment of this invention.
- FIG. 11 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention.
- a fence post cap 10 is a unitary structure fabricated of sheet metal.
- the unitary structure has a peaked sheet metal cap portion 11 with four depending sheet metal side walls 12 , 14 , 16 , and 18 and four depending sheet metal corner walls 13 , 15 , 17 , and 19 .
- a first side wall 14 has a planar sheet metal portion 22 and two inwardly extending bent sheet metal portions which form protrusions, or dimples, 24 a, 24 b.
- a second side wall 18 opposed to the first side wall 14 , has a planar sheet metal portion 26 and two inwardly extending bent sheet metal portions which form protrusions, or dimples, 28 a, 28 b.
- the dimples are located such that dimple 24 a is opposite dimple 28 a and dimple 24 b is opposite dimple 28 b.
- the shortest distance, D 1 between the first side wall planar sheet metal portion 22 and the second side wall planar sheet metal portion 26 is greater than the shortest distance, D 2 , between each opposed pair of dimples 24 a, 28 a and 24 b, 28 b.
- Dimples 28 a, 28 b are mirror images of dimples 24 a, 24 b.
- dimple 24 a is a bent sheet metal portion which is separated from the second side wall planar sheet metal portion 26 along two opposed sides 33 - 1 , 33 - 2 of the dimple and is unitarily formed with the second side wall planar sheet metal portion 26 along two other opposed sides 31 - 1 , 31 - 2 of the dimple.
- Cap 10 may be generally square such that the distance between sides 12 and 16 is equal to the distance, D 1 , between sides 14 and 18 .
- cap 10 may be press fit over a smooth-walled, generally square, post 40 having a width and depth which is slightly less than distance D 1 but greater than D 2 .
- the fence post may be wooden or fabricated of fiberglass, iron, or vinyl. Because of the interference fit between the dimples of the cap and the post, the cap is held firmly in place. Further, with the cap secured by a press fit, the cap does not need to abut the top of the fence post. Hence, the cap can be leveled during installation even if the top of the fence post is not entirely level.
- the cap may be fabricated from a sheet 50 of sheet metal by first die punching sheet 50 between a female die 52 and a male die 54 in order to form a first unitary structure having a sheet metal cap portion and a plurality of depending planar sheet metal side walls. Then four side die punches 56 supported in the female die 52 may be punched into wells 58 in the male die 54 to form the dimples of the cap.
- cap 10 has been shown with four dimples in two opposed side walls, in other embodiments, the cap could have one dimple in each of two opposed side walls, although this is not preferred since the cap may have a tendency to pivot about the two dimples. In a further embodiment, the cap may have one dimple in each of its four side walls. Further, the dimples could be on two opposed corner walls, or on all four corner walls 13 , 15 , 17 , and 19 rather than on the side walls. Other arrangements could also be contemplated.
- Fabrication of the fence post cap from a unitary piece of sheet metal has the advntage that the cap, and particularly each dimple of the cap, has some degree of resilience, which facilitates the press fitting of the cap to a post.
- a sheet metal cap also allows the cap to be formed by die stamping. Nevertheless, some thin-walled plastics also provide a degree of resilience and so it may be possible to form a suitable cap with thin-walled dimples from plastic.
- a thin-walled material which has little resilient, such as a thin-walled glass cap may be used.
- cap 110 has differently configured opposed dimples 124 , 128 .
- each of the dimples is a laterally elongated bent sheet metal portion which is separated from the planar sheet metal portion 122 , 126 of side wall 114 , 118 , respectively, along respective upper and lower edges 131 - 1 , 131 - 2 of the dimple and is unitarily formed with the side wall planar sheet metal portion 122 or 126 along opposed sides 133 - 1 , 133 - 2 of the dimple.
- cap 110 of FIG. 5 may be press fit to a fence post.
- the post has little tendency to pivot about the dimples.
- these laterally elongated dimples in the side walls could extend to the corner walls of the cap.
- the dimples could be replaced with an inwardly projecting bent metal protrusion that extends continuously along the side walls and corner walls of the cap.
- the cap may be double-walled.
- cap 210 has dimples 224 a, 224 b projecting inwardly from a planar portion 222 of wall 214 and dimples 228 a, 228 b projecting inwardly from a planar portion 226 of wall 218 .
- Each dimple is a bent metal portion with a triangular outline that is bulged inwardly such that its three sides 235 - 1 , 235 - 2 , and 235 - 3 are unitarily formed with the side wall planar sheet metal portion 222 or 226 .
- the inward bulge forms an inwardly and upwardly projecting wall 259 terminating at an upper edge 260 .
- Cap 210 works similarly to cap 10 , however, in view of the inwardly and upwardly projecting wall 259 , an upward dislodging force on the cap will tend to cause the upper edge 260 of each dimple to bite into the fence post thereby enhancing the secure connection of the cap to the fence post.
- each inwardly extending protrusion is formed by an upturned bottom lip of each of two opposed side walls of the cap.
- Each upturned bottom lip projects inwardly and upwardly toward the peaked cap portion of the cap terminating at an upper free end.
- FIG. 9 shows a portion of a cap 310 side wall 318 with an inwardly and upwardly projecting lip 328 with a upper free end 329 .
- the upturned bottom lip may extend along all four side walls, or it could extend continuously along the four side walls and four corner walls.
- each inwardly protrusion may have the shape of an inwardly and upwardly projecting tongue.
- tongue 428 of cap 410 has a generally step-shaped profile so as to inwardly project from wall 418 and project upwardly to its upper free end 429 .
- each of caps 310 and 410 may be press fit to a fence post.
- caps 310 and 410 have an advantage over cap 10 in that an upward dislodging force on the cap will tend to cause the free end 329 or 429 of the protrusion to bite into the fence post thereby enhancing the secure connection of the cap to the fence post.
- the bite provided by the protrusion 328 or 428 can be more secure than the bite provided by the dimple of the cap 210 of FIGS. 7 and 8 because material of the post bitten by protrusion 328 or 428 can be pushed into mouth 331 or 431 .
- cap 510 has dimples 524 a, 524 b projecting inwardly from a planar portion 522 of wall 514 and dimples 528 a, 528 b projecting inwardly from a planar portion 526 of wall 518 .
- the upper edge 550 of each dimple is separated from its respective wall 514 , 518 to provide a mouth-like gap 531 between the upper edge of each dimple and its respective side wall 514 , 518 .
- a V-shaped notch 552 extends from the upper edge 550 of each dimple.
- the notches are shown with a V-shaped taper, optionally the notches could be tapered such that the taper of the notches define other tapering shapes.
- cap 510 is fabricated of sheet metal or thin-wall plastic, a tapered notch gives each dimple a degree of compliance while substantially maintaining the strength of the dimple. While not preferred, alternatively, the notches could have straight side walls.
- Cap 510 may be press fit to a fence post. As the cap is press fit, the dimple wall adjacent notch 552 may flex. One press fit in place, an upward dislodging force on the cap will tend to cause upper edge 550 of each dimple to bite into the fence post thereby enhancing the secure connection of the cap to the fence post. Indeed, the bite provided by the notched dimples can be more secure than the bite provided by the dimple of the cap 210 of FIGS. 7 and 8 because material of the post bitten by the notched dimple can be pushed into mouth 531 .
- a cap otherwise fabricated may still provide some advantages.
- a cap could be fabricated from sheet metal without protrusions and then protrusions tack welded to the inside of the cap walls.
- the tongues of cap 410 of FIG. 10 or the dimples of cap 510 of FIG. 11 may be tack welded to the cap.
- the cap may be fabricated of a material other than sheet metal.
- the cap could be fabricated of fibreglass, plastic, or glass. In such instance, the cap could be molded from a single piece of material, or the protrusions, such as the tongues of cap 410 or the dimples of cap 510 could be fused to the cap after initial manufacture.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fencing (AREA)
Abstract
A fence post cap is fabricated of thin-walled material with a cap portion above a plurality of depending walls. A first wall has an inwardly and upwardly extending thin-walled first protrusion with a first upper edge providing a mouth between the first wall adjacent the first upper edge and the first upper edge. Likewise, a second side wall, opposite the first side wall, has an inwardly and upwardly extending thin-walled second protrusion with a second upper edge providing a mouth between the second side wall adjacent the second upper edge and the second upper edge. The protrusions can be positioned so that they are opposite one another such that a shortest distance between the first wall adjacent the first protrusion and the second wall adjacent the second protrusion is greater than a shortest distance between the first wall inwardly extending portion and the second wall inwardly extending portion. Each protrusion can be a wall of a dimple that inclines inwardly and upwardly to an upper edge where the upper edge is separated from the side wall from which the dimple extends. The dimple wall can have a notch extending from this upper edge. The cap can be a unitary structure fabricated of sheet metal.
Description
- This application claims benefit and priority from U.S. provisional patent application No. 61/297,440, filed on Jan. 22, 2010, the contents of which are incorporated herein by reference.
- This invention relates to a fence post cap, an assembly including a fence post cap, and a method of making a fence post cap.
- To increase the attractiveness and durability of a fence post, such as a wooden, vinyl, or fiberglass post, it is known to cap the post. A post cap is typically fitted over the top of the post and secured in place by screws, nails, or an adhesive. It is often required that the fence post have a completely level top surface so that the post cap itself will be level. This may require cutting the top of the fence post level in the field, but such a procedure is labour intensive.
- This invention seeks to provide an improved fence post cap.
- A fence post cap is fabricated with inwardly directed protrusions so that, during installation on a fence post, the cap is press fit to the post.
- In one embodiment, a fence post cap is fabricated of a thin-walled material. The structure has a cap portion above a plurality of depending walls. A first wall of the walls has an inwardly and upwardly extending thin-walled first protrusion with a first upper edge providing a mouth between said first wall and said first upper edge. A second wall of the walls, opposed to said first wall, has an inwardly and upwardly extending thin-walled second protrusion with a second upper edge providing a mouth between said second wall and the second upper edge.
- In another embodiment, a unitary fence post cap is fabricated of sheet metal with a sheet metal cap portion above a plurality of depending sheet metal walls. A first wall has an inwardly extending bent sheet metal portion. Likewise, a second wall, opposite the first wall, has an inwardly extending bent sheet metal portion. The inwardly extending bent sheet metal portions are positioned so that they are opposite one another such that a shortest distance between the first wall adjacent the first wall inwardly extending bent sheet metal portion and the second wall adjacent the second wall inwardly extending bent sheet metal portion is greater than a shortest distance between the first wall inwardly extending bent sheet metal portion and the second wall inwardly extending bent sheet metal portion.
- In a further embodiment, a fence post cap is fabricated of a thin-walled material with a cap portion above a plurality of depending walls. A first wall has an inwardly extending thin-walled first dimple. A second wall, opposed to said first wall, has an inwardly extending thin-walled second dimple. The first dimple has a first dimple wall inclining inwardly and upwardly to a first upper edge. The first upper edge is separated from an adjacent portion of the first wall and the first dimple wall has a notch extending from the first upper edge. The second dimple has a second dimple wall inclining inwardly and upwardly to a second upper edge, the second upper edge being separated from an adjacent portion of the second wall. The second dimple wall has a notch extending from the second upper edge.
- In another embodiment, a method of making a fence post cap involves die punching a single piece of sheet metal so as to form a first unitary structure having a sheet metal cap portion and a plurality of depending sheet metal walls. The method continues with die punching the first unitary structure so that a first wall of the walls has an inwardly extending bent sheet metal portion and an opposite second wall has an inwardly extending bent sheet metal portion, where the first wall inwardly extending bent sheet metal portion is opposed to the second wall inwardly extending bent sheet metal portion and a shortest distance between the first wall adjacent the first wall inwardly extending bent sheet metal portion and the second wall adjacent the second wall inwardly extending bent sheet metal portion is greater than a shortest distance between the first wall inwardly extending bent sheet metal portion and the second wall inwardly extending bent sheet metal portion.
- Other features and advances will become apparent from the following description in conjunction with the drawings.
- In the figures which illustrate example embodiments of the invention,
-
FIG. 1 is a partially cut-away perspective view of a fence post cap made in accordance with an embodiment of this invention, -
FIG. 1A is a bottom plan view of the cap ofFIG. 1 , -
FIG. 2 is a cross-sectional fragmentary view along the lines 2-2 ofFIG. 1 , -
FIG. 3 is a perspective view of the cap ofFIG. 1 installed on a fence post, -
FIG. 4 is a schematic view of a die for making the cap ofFIG. 1 , -
FIG. 5 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention, -
FIG. 6 is a cross-sectional fragmentary view along the lines 6-6 ofFIG. 5 , -
FIG. 7 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention, -
FIG. 8 is a cross-sectional fragmentary view along the lines 8-8 ofFIG. 7 , -
FIG. 9 is a cross-sectional fragmentary view of a cap made in accordance with a further embodiment of this invention, -
FIG. 10 is a cross-sectional fragmentary view of a cap made in accordance with yet another embodiment of this invention, and -
FIG. 11 is a partially cut-away perspective view of a fence post cap made in accordance with another embodiment of this invention. - Turning to
FIGS. 1 and 1A , afence post cap 10 is a unitary structure fabricated of sheet metal. The unitary structure has a peaked sheetmetal cap portion 11 with four depending sheetmetal side walls metal corner walls first side wall 14 has a planarsheet metal portion 22 and two inwardly extending bent sheet metal portions which form protrusions, or dimples, 24 a, 24 b. Similarly, asecond side wall 18, opposed to thefirst side wall 14, has a planarsheet metal portion 26 and two inwardly extending bent sheet metal portions which form protrusions, or dimples, 28 a, 28 b. The dimples are located such thatdimple 24 a isopposite dimple 28 a and dimple 24 b isopposite dimple 28 b. With this arrangement, the shortest distance, D1, between the first side wall planarsheet metal portion 22 and the second side wall planarsheet metal portion 26 is greater than the shortest distance, D2, between each opposed pair ofdimples -
Dimples dimples 24 a, 24 b. With reference toFIG. 2 along withFIG. 1A ,dimple 24 a is a bent sheet metal portion which is separated from the second side wall planarsheet metal portion 26 along two opposed sides 33-1, 33-2 of the dimple and is unitarily formed with the second side wall planarsheet metal portion 26 along two other opposed sides 31-1, 31-2 of the dimple. -
Cap 10 may be generally square such that the distance betweensides sides FIG. 3 , in use,cap 10 may be press fit over a smooth-walled, generally square, post 40 having a width and depth which is slightly less than distance D1 but greater than D2. The fence post may be wooden or fabricated of fiberglass, iron, or vinyl. Because of the interference fit between the dimples of the cap and the post, the cap is held firmly in place. Further, with the cap secured by a press fit, the cap does not need to abut the top of the fence post. Hence, the cap can be leveled during installation even if the top of the fence post is not entirely level. - Turning to
FIG. 4 , the cap may be fabricated from asheet 50 of sheet metal by firstdie punching sheet 50 between afemale die 52 and a male die 54 in order to form a first unitary structure having a sheet metal cap portion and a plurality of depending planar sheet metal side walls. Then four side diepunches 56 supported in the female die 52 may be punched intowells 58 in the male die 54 to form the dimples of the cap. - While
cap 10 has been shown with four dimples in two opposed side walls, in other embodiments, the cap could have one dimple in each of two opposed side walls, although this is not preferred since the cap may have a tendency to pivot about the two dimples. In a further embodiment, the cap may have one dimple in each of its four side walls. Further, the dimples could be on two opposed corner walls, or on all fourcorner walls - Fabrication of the fence post cap from a unitary piece of sheet metal has the advntage that the cap, and particularly each dimple of the cap, has some degree of resilience, which facilitates the press fitting of the cap to a post. A sheet metal cap also allows the cap to be formed by die stamping. Nevertheless, some thin-walled plastics also provide a degree of resilience and so it may be possible to form a suitable cap with thin-walled dimples from plastic. Though not as advantageous, in some applications where the post to which the cap will be fitted provides some degree of resilience (such as a wooden post), a thin-walled material which has little resilient, such as a thin-walled glass cap, may be used.
- In a further embodiment, with reference to
FIGS. 5 and 6 , cap 110 has differently configured opposed dimples 124, 128. Specifically, each of the dimples is a laterally elongated bent sheet metal portion which is separated from the planar sheet metal portion 122, 126 of side wall 114, 118, respectively, along respective upper and lower edges 131-1, 131-2 of the dimple and is unitarily formed with the side wall planar sheet metal portion 122 or 126 along opposed sides 133-1, 133-2 of the dimple. - Similarly to cap 10 of
FIG. 1 , cap 110 ofFIG. 5 may be press fit to a fence post. However, in view of the longitudinal extent of the dimples, the post has little tendency to pivot about the dimples. - Optionally, these laterally elongated dimples in the side walls could extend to the corner walls of the cap. As a further option, the dimples could be replaced with an inwardly projecting bent metal protrusion that extends continuously along the side walls and corner walls of the cap. To avoid the laterally elongated dimples, or the continuous protrusion, being visible from the outside of the cap, the cap may be double-walled.
- Turning to FIGS. land 8, in yet another embodiment,
cap 210 hasdimples 224 a, 224 b projecting inwardly from aplanar portion 222 ofwall 214 anddimples planar portion 226 ofwall 218. Each dimple is a bent metal portion with a triangular outline that is bulged inwardly such that its three sides 235-1, 235-2, and 235-3 are unitarily formed with the side wall planarsheet metal portion wall 259 terminating at anupper edge 260. -
Cap 210 works similarly to cap 10, however, in view of the inwardly and upwardly projectingwall 259, an upward dislodging force on the cap will tend to cause theupper edge 260 of each dimple to bite into the fence post thereby enhancing the secure connection of the cap to the fence post. - In a further embodiment, each inwardly extending protrusion is formed by an upturned bottom lip of each of two opposed side walls of the cap. Each upturned bottom lip projects inwardly and upwardly toward the peaked cap portion of the cap terminating at an upper free end. This embodiment is illustrated in
FIG. 9 which shows a portion of acap 310side wall 318 with an inwardly and upwardly projectinglip 328 with a upperfree end 329. Notably, with this embodiment, there is a mouth-like gap 331 between theupper end 329 of the projecting lip and theside wall 318. In a further embodiment, the upturned bottom lip may extend along all four side walls, or it could extend continuously along the four side walls and four corner walls. - In another embodiment, each inwardly protrusion may have the shape of an inwardly and upwardly projecting tongue. This embodiment is illustrated in
FIG. 10 whereintongue 428 ofcap 410 has a generally step-shaped profile so as to inwardly project fromwall 418 and project upwardly to its upperfree end 429. Again, with this embodiment, there is a mouth-like gap 431 between theupper end 429 of the projecting tongue and theside wall 418. - Like previously described embodiments of the cap, each of
caps cap 10 in that an upward dislodging force on the cap will tend to cause thefree end protrusion cap 210 ofFIGS. 7 and 8 because material of the post bitten byprotrusion mouth - Turning to
FIG. 11 , in a further embodiment,cap 510 hasdimples 524 a, 524 b projecting inwardly from aplanar portion 522 ofwall 514 anddimples 528 a, 528 b projecting inwardly from aplanar portion 526 of wall 518. Theupper edge 550 of each dimple is separated from itsrespective wall 514, 518 to provide a mouth-like gap 531 between the upper edge of each dimple and itsrespective side wall 514, 518. Furthermore, a V-shapednotch 552 extends from theupper edge 550 of each dimple. While these notches are shown with a V-shaped taper, optionally the notches could be tapered such that the taper of the notches define other tapering shapes. Wherecap 510 is fabricated of sheet metal or thin-wall plastic, a tapered notch gives each dimple a degree of compliance while substantially maintaining the strength of the dimple. While not preferred, alternatively, the notches could have straight side walls. -
Cap 510 may be press fit to a fence post. As the cap is press fit, the dimple walladjacent notch 552 may flex. One press fit in place, an upward dislodging force on the cap will tend to causeupper edge 550 of each dimple to bite into the fence post thereby enhancing the secure connection of the cap to the fence post. Indeed, the bite provided by the notched dimples can be more secure than the bite provided by the dimple of thecap 210 ofFIGS. 7 and 8 because material of the post bitten by the notched dimple can be pushed into mouth 531. - While a cap fabricated of a unitary piece of sheet metal allows for simple manufacture and, at least in some of the described embodiments, resilient protrusions, a cap otherwise fabricated may still provide some advantages. For example, a cap could be fabricated from sheet metal without protrusions and then protrusions tack welded to the inside of the cap walls. In this way, for example, the tongues of
cap 410 ofFIG. 10 or the dimples ofcap 510 ofFIG. 11 may be tack welded to the cap. In further embodiments, the cap may be fabricated of a material other than sheet metal. For example, the cap could be fabricated of fibreglass, plastic, or glass. In such instance, the cap could be molded from a single piece of material, or the protrusions, such as the tongues ofcap 410 or the dimples ofcap 510 could be fused to the cap after initial manufacture. - Other embodiments will be apparent to those skilled in the art and, therefore, the invention is defined in the claims.
Claims (21)
1. A fence post cap, comprising:
a thin-walled cap portion above a plurality of depending thin walls;
a first wall of said walls having an inwardly and upwardly extending thin-walled first protrusion with a first upper edge providing a mouth between said first wall and said first upper edge;
a second wall of said walls, opposed to said first wall, having an inwardly and upwardly extending thin-walled second protrusion with a second upper edge providing a mouth between said second wall and said second upper edge.
2. The fence post cap of claim 1 wherein said first wall is a first side wall and said second wall is a second side wall opposite said first side wall.
3. The fence post cap of claim 2 wherein said first protrusion is an upturned bottom lip of said first side wall and said second protrusion is an upturned bottom lip of said second side wall.
4. The fence post cap of claim 3 wherein said first protrusion is a tongue projecting inwardly and upwardly from said first side wall and said second protrusion is a tongue, projecting inwardly and upwardly from said second side wall.
5. The fence post cap of claim 1 further comprising:
a first thin-walled dimple, said first protrusion being an inwardly and upwardly inclining wall of said first dimple rising to said first upper edge; and
a second thin-walled dimple, said second protrusion being an inwardly and upwardly inclining wall of said second dimple rising to said second upper edge.
6. The fence post cap of claim 5 wherein said wall of said first dimple has a notch extending from said first upper edge; and said wall of said second dimple has a notch extending from said second upper edge.
7. The fence post cap of claim 6 wherein said notch of saidfirst dimple is a tapered notch and wherein said tapered notch of said second dimple is a tapered notch.
8. The fence post cap of claim 6 wherein said notch of said first dimple is a V-shaped notch and wherein said tapered notch of said second dimple is a V-shaped notch.
9. The fence post cap of claim 1 wherein said cap portion, said depending walls, and each said protrusion comprise a unitary structure fabricated of sheet metal.
10. A fence post cap, comprising:
a unitary structure fabricated of sheet metal, said unitary structure having a sheet metal cap portion above a plurality of depending sheet metal walls;
a first wall of said walls having an inwardly extending bent sheet metal portion;
a second wall of said walls, opposed to said first wall, having an inwardly extending bent sheet metal portion, said first wall inwardly extending bent sheet metal portion being opposed to said second wall inwardly extending bent sheet metal portion;
wherein a shortest distance between said first wall adjacent said first wall inwardly extending bent sheet metal portion and said second wall adjacent said second wall inwardly extending bent sheet metal portion is greater than a shortest distance between said first wall inwardly extending bent sheet metal portion and said second wall inwardly extending bent sheet metal portion.
11. The fence post cap of claim 10 wherein said second wall inwardly extending bent sheet metal portion is a mirror image of said first wall inwardly extending bent sheet metal portion.
12. The fence post cap of claim 11 wherein said first wall is a first side wall and said second wall is a second side wall and further comprising a third side wall and an opposed fourth side wall extending between said first side wall and said second side wall.
13. The fence post cap of claim 10 wherein each of said first wall inwardly extending bent sheet metal portion and said second wall inwardly extending bent sheet metal portion is an inwardly and upwardly projecting projection which projects to an upper edge.
14. The fence post cap of claim 13 wherein each projection is a finger having a free end.
15. The fence post cap of claim 14 wherein each said finger has a generally step-shaped profile with steps stepping inwardly and upwardly.
16. The fence post cap of claim 13 wherein each projection is an upturned bottom lip of one of said first wall and said second wall.
17. The fence post cap of claim 10 wherein each of said first wall inwardly extending bent sheet metal portion and said second wall inwardly extending bent sheet metal portion has an inwardly and upwardly projecting projection which projects to an upper edge and wherein said first wall inwardly extending bent sheet metal portion is separated from an adjacent portion of said first wall along an upper edge of said first wall inwardly extending bent sheet metal portion and is unitarily formed with another adjacent portion of said first wall sheet metal portion along at least two opposed sides of said first wall inwardly extending bent sheet metal portion.
18. The fence post cap of claim 17 further comprising a notch extending from said upper edge.
19. The fence post cap of claim 18 wherein said notch is a V-shaped notch.
20. A fence post cap, comprising:
a thin-walled cap portion above a plurality of depending thin walls;
a first wall of said walls having an inwardly extending thin-walled first dimple;
a second wall of said walls, opposed to said first wall, having an inwardly extending thin-walled second dimple;
said first dimple having a first dimple wall inclining inwardly and upwardly to a first upper edge, said first upper edge separated from an adjacent portion of said first wall, said first dimple wall having a notch extending from said first upper edge; and
said second dimple having a second dimple wall inclining inwardly and upwardly to a second upper edge, said second upper edge separated from an adjacent portion said second wall, said second dimple wall having a notch extending from said second upper edge.
21. A method of making a fence post cap, comprising:
die punching a single piece of sheet metal so as to form a first unitary structure having a sheet metal cap portion and a plurality of depending planar sheet metal walls;
die punching said first unitary structure so that a first wall of said walls has an inwardly extending bent sheet metal portion and a second wall of said walls, opposed to said first wall, has an inwardly extending bent sheet metal portion, said first wall inwardly extending bent sheet metal portion being opposed to said second wall inwardly extending bent sheet metal portion wherein a shortest distance between said first wall adjacent said first wall inwardly extending bent sheet metal portion and said second wall adjacent said second wall inwardly extending bent sheet metal portion is greater than a shortest distance between said first wall inwardly extending bent sheet metal portion and said second wall inwardly extending bent sheet metal portion.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/971,984 US20110180773A1 (en) | 2010-01-22 | 2010-12-17 | Fence post cap |
US15/486,774 US10100551B2 (en) | 2010-01-22 | 2017-04-13 | Fence post cap |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29744010P | 2010-01-22 | 2010-01-22 | |
US12/971,984 US20110180773A1 (en) | 2010-01-22 | 2010-12-17 | Fence post cap |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/486,774 Continuation US10100551B2 (en) | 2010-01-22 | 2017-04-13 | Fence post cap |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110180773A1 true US20110180773A1 (en) | 2011-07-28 |
Family
ID=44303633
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/971,984 Abandoned US20110180773A1 (en) | 2010-01-22 | 2010-12-17 | Fence post cap |
US15/486,774 Active US10100551B2 (en) | 2010-01-22 | 2017-04-13 | Fence post cap |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/486,774 Active US10100551B2 (en) | 2010-01-22 | 2017-04-13 | Fence post cap |
Country Status (2)
Country | Link |
---|---|
US (2) | US20110180773A1 (en) |
CA (1) | CA2713295C (en) |
Cited By (9)
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US20110163213A1 (en) * | 2010-01-05 | 2011-07-07 | Jeffery Borowiak | Mailbox mounting system |
US20130272786A1 (en) * | 2011-12-02 | 2013-10-17 | David Ivinson | Stress reducing tool mount |
USD749239S1 (en) * | 2013-12-12 | 2016-02-09 | Dee Volin | Top rail end cup |
US10190329B2 (en) | 2015-03-18 | 2019-01-29 | Jacob Kobelt | Methods, systems, and assemblies for covering an end of a post |
JP2019117903A (en) * | 2017-12-27 | 2019-07-18 | 株式会社松尾製作所 | Three-dimensional resin molded circuit component, manufacturing method thereof, and intermediate component for plating |
US10876561B2 (en) * | 2017-01-17 | 2020-12-29 | Timotion Technology Co., Ltd. | Retractable column structure |
US11274466B2 (en) * | 2018-06-25 | 2022-03-15 | Mat Holdings, Inc. | Post and cap for chain link fence with enhanced engagement |
US20220106808A1 (en) * | 2020-10-01 | 2022-04-07 | PLM Solutions Inc. dba Fence Armor | Fence Cap System |
US11540624B2 (en) * | 2017-01-17 | 2023-01-03 | Timotion Technology Co., Ltd. | Retractable column structure |
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USD848240S1 (en) * | 2016-11-29 | 2019-05-14 | Higgs Medical Products, Inc. | Suction grab bar |
US10927563B2 (en) * | 2017-11-01 | 2021-02-23 | Bradley GEISE | Plug device for swimming pool fence system and related methods |
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US20230184002A1 (en) * | 2021-12-14 | 2023-06-15 | Matthew Wayne Lemon | Picket Fence Board Protectors |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110163213A1 (en) * | 2010-01-05 | 2011-07-07 | Jeffery Borowiak | Mailbox mounting system |
US20130272786A1 (en) * | 2011-12-02 | 2013-10-17 | David Ivinson | Stress reducing tool mount |
US8783997B2 (en) * | 2011-12-02 | 2014-07-22 | Eca Medical Instruments | Stress reducing tool mount |
US8943667B2 (en) | 2011-12-02 | 2015-02-03 | Eca Medical Instruments | Stress reducing tool mounting method |
USD749239S1 (en) * | 2013-12-12 | 2016-02-09 | Dee Volin | Top rail end cup |
US10190329B2 (en) | 2015-03-18 | 2019-01-29 | Jacob Kobelt | Methods, systems, and assemblies for covering an end of a post |
US11540624B2 (en) * | 2017-01-17 | 2023-01-03 | Timotion Technology Co., Ltd. | Retractable column structure |
US10876561B2 (en) * | 2017-01-17 | 2020-12-29 | Timotion Technology Co., Ltd. | Retractable column structure |
JP2019117903A (en) * | 2017-12-27 | 2019-07-18 | 株式会社松尾製作所 | Three-dimensional resin molded circuit component, manufacturing method thereof, and intermediate component for plating |
US20220106809A1 (en) * | 2018-06-25 | 2022-04-07 | Mat Holdings, Inc. | Post and cap for chain link fence with enhanced engagement |
US11274466B2 (en) * | 2018-06-25 | 2022-03-15 | Mat Holdings, Inc. | Post and cap for chain link fence with enhanced engagement |
US11913246B2 (en) * | 2018-06-25 | 2024-02-27 | Mat Holdings, Inc. | Post and cap for chain link fence with enhanced engagement |
US20220106808A1 (en) * | 2020-10-01 | 2022-04-07 | PLM Solutions Inc. dba Fence Armor | Fence Cap System |
US11814861B2 (en) * | 2020-10-01 | 2023-11-14 | PLM Solutions Inc. | Fence cap system |
Also Published As
Publication number | Publication date |
---|---|
CA2713295A1 (en) | 2011-07-22 |
CA2713295C (en) | 2017-01-17 |
US20170314292A1 (en) | 2017-11-02 |
US10100551B2 (en) | 2018-10-16 |
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Legal Events
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AS | Assignment |
Owner name: 1461043 ONTARIO LIMITED, CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PACHECO, CARLOS;REEL/FRAME:025520/0097 Effective date: 20101129 |
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