Fencing system

Information

  • Patent Grant
  • 6344617
  • Patent Number
    6,344,617
  • Date Filed
    Friday, May 28, 1999
    27 years ago
  • Date Issued
    Tuesday, February 5, 2002
    24 years ago
  • Inventors
  • Examiners
    • Reichard; Dean A.
    • Walkenhorst; W. David
    Agents
    • Burns, Doane, Swecker & Mathis, LLP
Abstract
A fence rail holder for connection to conventional metal fence posts having a generally T-shaped cross section is provided which allows PVC fence rails to be connected to metal fence posts. The fence rail holder detachably mounts on a fence post using at least one clip which attaches to the T-shaped fence post. Openings at opposite side surfaces of the fence rail holder receive and support the fence rails. The fencing system allows the addition of a very visible, white PVC or other rail to a conventional barbed wire or wire mesh fence. The fencing system also includes wire support members which allow electric wire or other wire to be easily connected to a PVC fence.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




The invention relates to a fencing system, and more particularly, the invention relates to a fence rail holder for connection to conventional metal fence posts.




2. Brief Description of the Related Art




There are many different fencing options for fencing horses and other animals such as wood, PVC, high-tensile wire, barbed wire, wire mesh, metal pipe, and others. Each of these fencing materials has different advantages and disadvantages in the areas of strength, visibility, aesthetics, and maintenance.




Wooden plank or post and rail fencing is both sturdy and attractive. Wood fencing is also quite visible to horses which discourages them from crashing into the fence. However, wood fencing requires high maintenance in painting and replacing rotten wooden fence posts and rails. Wooden fencing is also rather costly.




Wire fencing including barbed wire and wire mesh fencing is easy to install and uses a common inexpensive metal “T” post system for supporting the fencing. However, the metal T-posts of this type of fencing are narrow and the wire is thin making the fence very difficult for animals to see particularly in poor light.




PVC fencing has been used as an alternative to wooden fencing and provides the superior aesthetics of a conventional wooden fence without the associated maintenance. However, the new PVC fencing systems are relatively expensive. In addition, animals may lean or rub against the PVC fencing causing it to crack in cold weather.




Accordingly, it would be desirable to provide a fencing system having the visibility advantages of a wooden or PVC fence with the cost advantages of a wire mesh or barbed wire fence.




It would also be desirable to provide a system for easily mounting an electric wire on a PVC fence to prevent animals from leaning or rubbing on the fence.




SUMMARY OF THE INVENTION




The present invention relates to a fence rail holder for detachably mounting to conventional metal fence posts.




The invention also relates to a fencing system for attaching PVC fence rails to non-PVC fence posts.




The invention also relates to a system for attaching an electric wire to a PVC fence.




In accordance with one aspect of the present invention, a fence rail holder for mounting fence rails on a fence post includes a body having openings for receiving and supporting ends of fence rails, and at least one clip secured to the body, the clip being configured to connect the body to a fence post.




In accordance with another aspect of the present invention, a system includes a metal fence post with a PVC fence rail holder connected to the metal fence post by clips. The fence rail holder has openings on opposite sides of the fence rail holder and a plurality of fence rails are received in the openings.




In accordance with an additional aspect of the present invention, a wire support member made of an electrically insulating material includes a wire supporting portion for receiving and supporting an electric wire, and a stem connected to the wire supporting portion. The stem has at least two flexible fingers configured to snap into a corresponding opening in a PVC fence member to secure the wire support member to the PVC fence member.




The present invention provides the advantage of a fencing system having the visibility and easy installation advantages of a wooden or PVC fence with the cost advantages of a wire mesh or barbed fence.











BRIEF DESCRIPTION OF THE DRAWINGS




The invention will now be described in greater detail with reference to the preferred embodiments illustrated in the accompanying drawings, in which like elements bear like reference numerals, and wherein:





FIG. 1

is a perspective view of a fencing system according to the present invention;





FIG. 2

is a top view of the fence rail holder and fence rails according to the present invention;





FIG. 3

is a cross-sectional view of the fence rail holder and fence rails of

FIG. 2

taken along line


3


—


3


of

FIG. 2

;





FIG. 4

is a side view of the fence rail holder;





FIG. 5

is a front view of one embodiment of a wire support member;





FIG. 6

is a rear view of the wire support member of

FIG. 5

;





FIG. 7

is a rear view of an alternative embodiment of a wire support member;





FIG. 8

is a side view of the wire support member of

FIG. 7

;





FIG. 9

is a top view of a PVC fence post, fence rail, and the wire support member of

FIGS. 7 and 8

;





FIG. 10

is a side view of an adaptor and the wire support member of

FIGS. 7 and 8

;





FIG. 11

is a front view of the adaptor of

FIG. 10

;





FIG. 12

is a top view of the adaptor and wire support member of

FIG. 10

;





FIGS. 13

,


14


, and


15


are front, side, and top views of an alternative clip for fastening the fence rail holder to a wood fence post;





FIG. 16

is a side view of a fence post cap for fastening the fence rail holder to a fence post;





FIG. 17

is a cross-sectional view of the fence post cap of

FIG. 16 and a

fence post, taken along line


17


—


17


of

FIG. 16

;





FIG. 18

is a side view of an alternative embodiment of a fence post cap; and





FIG. 19

is a cross-sectional view of the fence post cap of

FIG. 18

, taken along line


19


—


19


.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS




The fence rail holder


10


according to the present invention provides the visibility of a wooden or PVC fence at a lower cost because it enables a PVC fence rail to be connected to the inexpensive metal posts commonly used to install barbed wire and wire mesh fences. The fencing system of the present invention also provides a way to attach an electric fence or hot wire to PVC fencing.




As shown in

FIGS. 1-4

, the fence rail holder


10


includes a hollow body which defines rectangular openings


12


at opposite sides, configured to receive a commonly available fence rail


100


. The fence rails


100


are easily visible and the cross-sectional area of each rail is in the range of about ½ by about 1 inch, to about 5 by about 8 inches. The fence rails may also be square in cross section. In one embodiment, the PVC fence rail is about 1½ by about 5½ inches.




Two clips


16


,


18


including a fixed upper clip


16


and a slidable lower clip


18


are positioned on a rear surface of the fence rail holder


10


, as shown in

FIGS. 2-4

. These clips


16


,


18


have somewhat U-shaped portions which are substantially the same size and shape and are configured to be received on the conventional “T” shaped fence posts. The clips


16


,


18


have a configuration which allows the fence rail holder


10


to be easily snapped onto the “T” posts and to be removed from the posts by pressing on the elongated lever end


14


of the clip. Attaching the fence rail holder


10


to a “T” post allows the addition of a very visible, white or other colored PVC, or other rail to a conventional barbed wire or wire mesh fence. The PVC rail may be placed along the top of the fence in place of or in addition to a top strand of barbed wire.




As illustrated in

FIGS. 2 and 4

, each clip has a mounting portion


46


which can be received in an opening


26


in the rear surface of the fence rail holder


10


. In one embodiment, the mounting portion


46


has a groove


48


disposed about an edge of the mounting portion. When the clip


16


,


18


is inserted in the fence rail holder


10


, the groove


48


engages the side surfaces of the opening


26


. The mounting portion


46


has an optional locking mechanism


62


which secures the clips


16


,


18


in place when inserted in the fence rail holder


10


. The locking mechanism


62


includes a tail which extends downward from the clips


16


,


18


and snaps into the opening


26


and prevents clips from sliding out of the opemng.




The conventional metal “T” posts


110


have a plurality of protrusions


112


, shown in

FIG. 1

, along a front face which prevent the wire


114


from slipping along the post. Since there is no industry standard for these metal fence posts


110


, the spacing between the protrusions


112


varies widely between manufacturers. The slidable lower clip


18


which slides in the elongated lower opening


26


allows the fence rail holder


10


to be mounted on posts from different manufacturers. Generally, the upper clip


16


will be snapped onto the fence post between the top two protrusions


112


and the lower clip


18


will be adjusted by sliding the clip vertically in the lower opening


26


in the fence rail holder


10


so that the lower clip can be received on the fence post without obstruction from the protrusions.




The fence rail holder


10


is preferably constructed of plastic, such as PVC, and includes a wire support member


20


on a front surface which allows the mounting of an electric wire


116


, barbed wire, electric tape, electric rope, or other wire along a front face of the fence rails


100


. The wire support member


20


is fabricated from an electrically insulating material and may be integral with or separate from the fence rail holder


10


. Examples of wire support members will be described in further detail below with respect to

FIGS. 5-9

.




The fence rails


100


are inserted into the openings


12


on either side of the fence rail holder


10


and may be held in place by tangs on the rail or by other fasteners. For example, the fence rail holder


10


may be provided with a plurality of holes


24


in the front or rear surface. After the fence rails are inserted into the openings


12


in the sides of the fence rail holder


10


, a hole may be drilled in the fence rail through the holes


24


in the fence rail holder


10


and a pin


64


or tab is inserted into the hole. The fence rail


100


is prevented from being removed from the fence rail holder


10


by the ends of the pin


64


. This provides an easy attachment system for attaching the fence rails


100


to the fence rail holder


10


in a removable manner which prevents the fence rails from falling out of the fence rail holder if the posts shift. The attachment system also allows some amount of give between the fence rail holder


10


and the rails


100


.





FIGS. 5-9

illustrate two embodiments of wire support members


20


A,


20


B having two different connections for connecting to a PVC fence post, rail, or to the fence rail holder


10


.





FIGS. 5 and 6

illustrate one example of a wire support member


20


A having two fingers


38


,


40


for receiving and supporting a hot wire or other wire. The fingers


38


,


40


are generally U-shaped and have a wire receiving slot


42


. One slot


42


of one of the fingers


38


opens upward and the other slot of the other finger


40


opens downward so that one finger


38


limits vertical upward movement of a wire (not shown resting in the slot


42


while the other finger


40


limits vertical downward movement of the wire.





FIG. 6

illustrates a rear view of the first embodiment of the wire support member


20


A. According to this embodiment, the wire support member


20


A is provided with a circular protruding shaft


68


having two tabs


70


or key members which extend from the shaft for locking the member into place. In use, an opening is formed in the fence rail holder


10


or other fencing member which is configured to receive the shaft


68


and the tabs


70


. The wire support member


20


A is inserted into the opening and rotated 90 degrees to lock the member in place.




An alternative embodiment of a wire support member


20


B, as shown in

FIGS. 7-9

, has a snap fit connection for quick mounting the member into a fencing system. The snap fit connection includes a stem


44


having a tapered or conical shaped rim


72


. The stem


44


mounts the wire support member


20


on the fence rail holder


10


. As shown in

FIG. 8

, the stem


44


is provided with at least one longitudinal slot


50


which the slot allows the stem


44


to be compressed to a smaller diameter to snap into an opening in a fencing member. The opening in the fencing member has a smaller diameter than the rim


72


such that when the stem


44


is inserted in the opening, the stem and rim compress to create a close fit between the fencing member and stem.

FIG. 9

is a top view of a conventional PVC post


120


and PVC rail


100


system having a circular opening


28


drilled in the post for attaching the wire support member


20


B in a snap fit arrangement.




In an alternative embodiment, the stem


44


comprises a plurality of spring-contact fingers which form a hollow body. When inserting the stem


44


in the opening, the springcontact fingers deflect and allow the stem to pass through the opening. Examples of the attachment means for attaching the wire support member


20


to a fence member have been described. Other examples of attachment means include but are not limited to clamping, snap fitting mechanisms, turn-keys, lipped surfaces, and welding.





FIGS. 10-12

show the construction of another embodiment of the fencing system having an adaptor


52


for mounting the wire support member


20


B to a fence rail. The adaptor


52


is received on a fence rail and supports the wire support member


20


. The adaptor


52


may be used when an owner does not wish to drill holes directly into the PVC fence rails


100


or when it is desirable to offset the electric wire a distance from the fence rails. The adaptor is particularly useful when a spacing between adjacent “T” posts


110


becomes longer than a suggested


8


foot interval. The adaptor


52


clips on to the fence rail


100


so that a wire support member


20


can be installed mid span to ensure that the electric wire does not sag against the fence wire


114


. The adaptor


52


includes a bracket


60


, which is adapted to be positioned around at least a portion of the fence rail


100


, and a connector


58


supported by the bracket. The bracket


60


may be provided with a roughened and/or tacky surface to facilitate gripping the fence rail. The roughened surface enhances the friction between the surfaces and may comprise any suitable means, including but not limited to grooves, ridges, ribs, or the like. The bracket


52


may be adapted to be mounted on rectangular, circular, square fence rails, or fence rails set at an angle. Further, the adaptor


52


allows electric wire mounting on fence rails without drilling holes in the fence rail.




The connector


58


forms a cavity


56


with an opening


54


for receiving the stem


44


of the wire support member


20


B in a snap fit connection. In combination, the fence rail holder


10


and the adaptor


52


allow the fencing system to support a wire at the fence posts and along fence rails. The connector


58


extends from the bracket


60


a distance such that a wire held by the wire support member


20


does not contact the fence post, fence rail, or wire fencing.




The fence rail holder


10


according to the present invention may also be used with other types of fence posts such as round or square wooden posts.

FIGS. 13-15

illustrate an alternative embodiment of a clip


30


which is configured to allow the fence rail holder


10


to be attached to round or square fence posts. The clip


30


includes holes


32


which allow the clip to be nailed to a round, square, or other shaped wooden fence post or screwed or riveted to a square, round, or other shaped metal fence post. The clip


30


takes the place of the clips


16


,


18


for supporting the fence rail holder


10


on the post.





FIGS. 16-19

illustrate two embodiments of a fence post cap for fastening a fence rail holder


10


to a top of a fence post. The fence post cap


80


A of

FIGS. 16 and 17

has a D-shaped cross section, a domed top


82


, and a mounting portion


86


to be received in a top opening


26


of the fence rail holder


10


. An interior of the cap


80


A includes two pairs of ribs


88


for contacting the front and back of the T-post


110


. The fence post cap


80


B of

FIGS. 18 and 19

has a circular cross section. Other shaped fence post caps may also be used.




The fence post caps


80


A,


80


B support the fence rail holder


10


at a top of the fence post. The caps


80


A,


80


B prevent animals from injuring themselves on the tops of the fence posts. The caps also prevent animals from being able to push the fence rail holder


10


down on the post


110


. The fence post caps may be integral with the fence rail holder


10


or separated as shown.




Several fence rail holders


10


may be used on a single post to form a multi-rail fence. The fence system of the present invention may be used with or without a wire mesh fence.




The fencing system according to the present invention provides the advantages of easy installation, low cost, durability, and visibility. In addition, the fencing system helps to shield the dangerous exposed top of the metal post. The fencing system also allows the incorporation of an electric wire or barbed wire onto the front face of the fence rail holders and fence rails.




The wire support members


20


according to the present invention provide a simple low cost manner of attaching an electric wire to PVC sensing systems. Animals tend to lose “respect” for vinyl fencing without electric wire and cause damage to the fence by leaning, scratching, kicking, or reaching through the fence. The wire support members


20


provide a way to attach an electric wire to the PVC fencing system.




While the invention has been described in detail with reference to the preferred embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made and equivalents employed, without departing from the present invention.



Claims
  • 1. An electric fence system with a wire support member for supporting and electrically insulating an electric wire on a fence, the wire support member comprising:a wire support member comprising: a base; an insulated wire supporting portion mounted on the base for receiving and supporting an electric wire; an attachment means for attaching the base of the wire support member to a plastic fence member; a plastic fence member, wherein the wire support member is fixed to the plastic fence member by the attachment means; and an electric wire which is spaced from the plastic fence member when the electric wire is received in the wire support member.
  • 2. The electric fence system of claim 1, wherein the attachment means is a snap fit connection.
  • 3. The electric fence system of claim 1, wherein the attachment means includes a stem having at least two flexible fingers configured to snap into a corresponding opening in a plastic fence member to secure the wire support member to the plastic fence member.
  • 4. An electric fence supporting system comprising:a plurality of support members made of electrically insulating material, the support members comprising: a base; a supporting portion mounted on the base for receiving and supporting an electric fence; and an attachment means for attaching the base of the support member to a plastic fence; and an electric fence received and supported by the plurality of support members.
  • 5. The electric fence supporting system of claim 4, wherein the attachment means is a snap fit connection.
  • 6. The electric fence supporting system of claim 4, further comprising a plastic fence member, wherein the support members are fixed to the plastic fence member by the attachment means.
Parent Case Info

This application claims priority of U.S. Provisional Patent Application Serial No. 60/109,678, filed on Nov. 24, 1998, which is incorporated herein by reference in its

US Referenced Citations (13)
Number Name Date Kind
3820758 Berg, Jr. et al. Jun 1974 A
4077611 Wilson Mar 1978 A
4520231 Hubbell May 1985 A
4623756 Wilson, Jr. Nov 1986 A
4680428 Wilson, Jr. Jul 1987 A
4792122 Smrt Dec 1988 A
5085409 Teixeira Feb 1992 A
5529289 Lancer, Sr. Jun 1996 A
5556079 West Sep 1996 A
5702090 Edgman Dec 1997 A
5755431 Williams May 1998 A
5938184 DeSouza Aug 1999 A
5992828 Burdick Nov 1999 A
Non-Patent Literature Citations (1)
Entry
Rail Fence Brouchure by Country Estate, No Date.
Provisional Applications (1)
Number Date Country
60/109678 Nov 1998 US