Patent Application
20050139815
The present invention relates to a fencing member for use in a fence structure having posts and rails, and to a method of forming the fencing member for concealing fastening means used to secure the fencing member to the fence structure.
In the construction of fences, a typical configuration involves rails which span between spaced apart post in the ground, wherein pickets or planking material is provided to vertically span the rails at spaced positions therealong between the posts. In one example the members forming the fence are formed of plastic which has been extruded. When assembling such a fence structure it is known to be desirable to conceal the mechanism used to fasten the members of the fence together.
Examples of fences formed of plastic materials in which the fasteners are intended to be concealed include U.S. Pat. No. 5,601,278 to Grayber, U.S. Pat. No. 5,660,376 to West, U.S. Pat. No. 5,695,174 to Tsai, U.S. Pat. No. 5,702,090 to Edgman, U.S. Pat. No. 5,803,438 to Blouin, U.S. Pat. No. 6,039,307 to De Zen, U.S. Pat. No. 6,173,944 to McCarthy and U.S. Pat. No. 6,398,193 to DeSouza. In each instance however a complex arrangement of brackets or notching of the fence members are required so that the members may be fastened together. In such instance, the fencing members require particular formation for fitting the brackets, for example the formation of key holes and the like. Such configurations are costly to form due to the complexity and large number of parts, and are time consuming to install as well.
According to one aspect of the present invention there is provided a fencing member for use in a fence structure having posts, rail members spanning the posts and picket members spaced along the rail members, the fencing member comprising either a rail member or a picket member of the fence structure and including:
According to a second aspect of the present invention there is provided a method of forming a fencing member in a fence structure having posts, rail members spanning the posts and picket members spaced along the rail members, the fencing member comprising either a rail member or a picket member of the fence structure, the method comprising:
According to a further aspect of the present invention there is provided a method of forming a fence structure of extruded material, the method including:
The method may further include forming a pair of rail members each including a respective mounting portion and a respective cover portion; securing the picket members at spaced positions on the mounting portions by suitable fastening means to span between the mounting portions of the rail members; and securing the cover portions on the mounting portions respectively to conceal the fastening means.
The fencing member disclosed herein forms a fencing structure which suitably conceals the fastening means while permitting efficient use of material that is readily manufactured and installed as each of the cover portion and the mounting portion may comprise a simple extruded part.
Each of the cover portion and the mounting portion preferably extends substantially a full length of the fencing member.
When the hollow member formed by the mounting portion and the cover portion has a rectangular cross section, the mounting portion and the cover portion preferably join each other at seams extending along opposing sides of the rectangular cross section. Furthermore, the seams preferably extend along the short sides of the rectangular cross section respectively.
Each of the cover portion and the mounting portion would accordingly comprise one side and a portion of two adjacent sides forming the rectangular cross section of the hollow member.
The mounting portion and the cover portion may be identical in configuration to one another.
The mounting portion and the cover portion may be securable to one another by snap fitting connectors formed at the perimeter wall of the hollow member; by tongue and groove connectors at the perimeter wall of the hollow member; or a combination thereof. The tongue and groove connectors preferably include a textured gripping surface formed thereon.
Preferably, the cover portion and the mounting portion are extruded of plastic material to form either a rail member or a picket member of the fence structure.
In the accompanying drawings, which illustrate exemplary embodiments of the present invention:
Referring to the accompanying drawings, there is illustrated a fencing member generally indicated by reference numeral 10. The fencing member is typically used as either a rail member 12 or a picket member 14 in a fencing structure 16 of the type having posts 18 supported in the ground at spaced positions between which the rail members 12 span. The picket members 14 are then mounted to span between an upper and lower one of the rail members 12 in a vertical orientation generally parallel to the posts 18 spaced along the rail members. The fencing member 10 comprises a rail member 12 in the illustrated embodiment.
The fencing member 10 includes a cover portion 20 and a mounting portion 22. The cover portion 20 and the mounting portion 22 are each formed of extruded plastic material identical in configuration to one another. The cover portion 20 and mounting portion 22 are suitably arranged to be selectively coupled to one another to each define a portion of the perimeter wall of an elongate hollow tube member which is assembled having a rectangular shaped cross section in which each of the cover portion and mounting portion extend the full length of the assembled hollow tube member.
Each of the portions 20 and 22 of the fencing member has a profile which is generally U-shaped including a base portion 24, a long connector 26 along one side of the base portion projecting perpendicularly therefrom and a short connector 28 along an opposing side of the base portion 24 also projecting perpendicularly from the base portion.
The long connector 26 includes a wall portion which defines a portion of the perimeter wall of the assembled tube member and a tongue 30 at a free end thereof. The short connector 28 comprises a pair of flanges 32 which define a groove 34 in the space therebetween. The groove 34 is sized to receive the tongue 30 of the opposing one of the portions 20 and 22 of the fencing member.
The tongue 30 lies parallel to the wall portion of the long connector 26 offset inwardly therefrom the width of an outer one of the flanges 32 forming the groove 34. The flange on the outer side which forms the groove 34 of the short connector 28 is flush with the corner of the assembled hollow tube member such that when the tongue is received within the groove, the wall portion of the long connector and the outer flange of the short connector lie flush with one another to define a smooth exterior surface at the perimeter wall.
The tongue 30, the flanges 32 and the remaining wall portion of each of the cover portion and mounting portion of the fencing member all have a substantially identical thickness. The inner width of the groove 34 is approximately equal to the thickness of the tongue for snugly receiving the tongue therein.
An inward facing surface 36 of the tongue includes ridges formed thereon for gripping connection in the assembled position. The mating surface 38 of the inner one of the flanges 32 of the groove 34 includes similar ridges for engaging the ridges of the tongue 30 of the opposing one of the portions 20 and 22 of the fencing member when assembled.
Each ridge includes a sloping first side 40 and a substantially perpendicular second side 42 with the first and second sides being oriented such that the first sides of opposing connectors confront one another before insertion to permit opposing ridges to ride over each other in a caming action which is permitted due to some minimal resilence permitted by the material forming the fencing member. Once inserted, the second sides 42 of opposing ridges engage one another in an interlocked configuration to assist in restricting removal of the cover portion from the mounting portion.
The orientation of the ridges on the surfaces 36 and 38 and the slight resilience of the material forming the fencing member cause the ridges to act as a snap-fit connection as the cover member is slid into place into the mounting portion. A free end 44 of the tongue is sloped and tapered to provide some self-alignment as the tongues are inserted into the respective grooves.
Once assembled the mounting portion and the cover portion form a rectangular perimeter wall having short sides 46 and wide sides 48, which are wider than the short sides. The base portions 24 are suitable sized to form the wide sides 48 of the rectangular perimeter so as to locate the seams at the junction of the mounting portion and cover portion on opposing short sides 46 of the assembled hollow tube members.
When one of the wide sides is mounted onto the fence structure, the seams are thus somewhat hidden from view while the opposing wide side is an uninterrupted surface being displayed. In the assembled hollow tube member, each of the portions 20 and 22 of the fencing member forms one side and a portion of two others of the rectangular cross section.
In use, the fence structure is first assembled by inserting the posts 18 into the ground at spaced positions in an upright orientation. Upper and lower rail members are provided to span horizontally between each adjacent pair of posts 18 at vertically spaced positions. The mounting portion 22 of each rail member is first attached to the posts by securing a fastener through an interior side 50 of the mounting portion. In other configurations heat may be applied at the interior side 50 to form a welded joint, (as shown in
The interior side of the mounting portion 50 remains accessible as long as the cover portion 20 remains removed. Vertically oriented picket members 14 each span between the upper and lower rails by securement to the respective mounting portions 22 at spaced positions along the rails. Fastening is accomplished either by using a fastener or applying heat to form a welded joint as accessed from the interior side 50 of the mounting portion similar to mounting onto the posts 18. The picket members themselves may alternatively comprise fencing members 10 formed in two sections so that fasteners may be accessible from an interior side of the picket members.
Once fastening is accomplished, the cover portion 20 is attached to the mounting portion using the snap connection of the tongue and groove connectors located at the perimeter wall of the assembled hollow tube members. Attachment of the cover acts to conceal the fastener heads or weld marks used for fastening the picket members onto the rail members. In an alternative order of construction, the pickets may be secured to the rail members to form a prefabricated fencing section. In this arrangement the prefabricated section can then be later attached to posts inserted in the ground later.
In further embodiments the connection of the mounting portion and cover portion may be accomplished by connectors which are separate from the perimeter wall. Furthermore various types of connectors may be provided either at the perimeter or at partition walls within the hollow interior of the assembled tube members. Various shapes can be extruded to form a variety of designs of picket members, rail members or posts in which the members are secured to one another either by various types of fasteners or welding in which the plastic material is heated for attachment by slightly melting and bonding the plastic material together.
While various embodiments of the present invention have been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2,454,847 | Dec 2003 | CA | national |
