U.S. patent number 3,700,213 [Application Number 05/114,784] was granted by the patent office on 1972-10-24 for plastic fence.
This patent grant is currently assigned to Pioneer Plastics, Inc.. Invention is credited to Wilfred J. Blease.
United States Patent |
3,700,213 |
Blease |
October 24, 1972 |
PLASTIC FENCE
Abstract
An all plastic fence composed of hollow posts and rails
externally textured to simulate wood. The posts are formed with
anchor formations at the bottom and vertically spaced holes for
reception of snap lock formations at the ends of the rails.
Inventors: |
Blease; Wilfred J. (Greenville,
NH) |
Assignee: |
Pioneer Plastics, Inc.
(Greenville, NH)
|
Family
ID: |
22357402 |
Appl.
No.: |
05/114,784 |
Filed: |
February 12, 1971 |
Current U.S.
Class: |
256/19;
256/59 |
Current CPC
Class: |
E04H
12/22 (20130101); E04H 17/1413 (20130101); E04H
17/1465 (20210101) |
Current International
Class: |
E04H
17/14 (20060101); E04H 12/22 (20060101); E04h
017/16 () |
Field of
Search: |
;256/19,59,21,22,65-70 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
430,155 |
|
Aug 1967 |
|
CH |
|
489,579 |
|
Jan 1953 |
|
CA |
|
734,057 |
|
Jul 1955 |
|
GB |
|
1,684,883 |
|
Nov 1969 |
|
DT |
|
Primary Examiner: Taylor; Dennis L.
Claims
Having thus described a preferred form of my invention, what I
claim is:
1. In a fence having a plurality of posts interconnected by rails,
each of said posts and rails being made of an integral flexibly
elastic material including an elongated tubular portion closed by
axial end wall portions, and an axially converging formation
connected to at least one of the end wall portions, said rails
having an enlargement on said at least one of the end wall portions
each of the posts having vertically spaced deformable openings
through which the enlargements on the rails are lockingly received
within the tubular portion.
2. The combination of claim 1, wherein the converging formation
associated with each of the posts is a ground anchor connected by a
hollow shank to a lower one of the end wall portions.
3. The combination of claim 2 wherein the converging formations
associated with the rails are solid locking heads connected to both
axial end wall portions of each of the rails by necks substantially
equal in diameter to said openings in the posts.
4. The combination of claim 3, wherein the end wall portions of the
rails converge axially toward the locking heads.
5. The combination of claim 4, wherein said elastic material is a
moldable plastic.
6. The combination of claim 5, wherein the tubular portions of the
posts and rails are externally textured.
7. The combination of claim 1, wherein the converging formations
associated with the rails are solid locking heads connected to both
axial end wall portions of each of the rails by necks substantially
equal in diameter to said openings in the posts.
8. The combination of claim 7, wherein the end wall portions of the
rails converge axially toward the locking heads.
9. The combination of claim 1, wherein said elastic material is a
moldable plastic.
10. The combination of claim 1, wherein the tubular portions of the
posts and rails are externally textured.
Description
BRIEF SUMMARY OF THE INVENTION
This invention relates to the construction and assembly of fences
and more particularly to fences made of plastic material.
The posts and rails that make up a fence are generally made of wood
or metal. Wood fences require constant attention because of rot and
termites. Some form of preservative treatment is accordingly
required. Metal fences, on the other hand, are subject to rust or
other forms of chemical deterioration and must therefore be surface
treated with paint or other coatings. The assembly and installation
of fences is furthermore difficult or costly.
It is therefore an important object of the present invention to
provide an easily assembled fence that is rot proof, rust proof,
termite proof, color fast and requires no paint, surface treatment
or preservative.
In accordance with the present invention, a fence is assembled from
hollow posts and rails made from a molded plastic material. The
posts are provided with below surface anchor foot portions and
vertical series of above surface openings angularly spaced from
each other. The openings in the posts receive locking formations at
the ends of the rails. The external surfaces of the posts and rails
may be textured to simulate wood or provide any desired decorative
effect. Further, the plastic material may be any desired color.
BRIEF DESCRIPTION OF THE VIEW OF THE DRAWINGS
FIG. 1 is a vertical section through a portion of an assembled and
installed fence constructed in accordance with the present
invention.
FIG. 2 is a top plan view of the fence portion shown in FIG. 1.
FIG. 3 is a side elevational view of a typical fence post made in
accordance with the present invention.
FIG. 4 is a side elevational view of a typical fence rail.
FIG. 5 is a top plan view of a portion of a fence constructed in
accordance with the present invention showing a corner post.
PARTICULAR DESCRIPTION OF THE INVENTION
Referring now to the drawings in detail, FIGS. 1 and 2 illustrate a
portion of an assembled fence generally referred to by reference
numeral 10. The fence consists of posts including interior posts 12
as shown in FIGS. 1 and 2 and corner posts 14 as shown in FIG. 5.
Except for the placement of holes therein, the posts 12 and 14 are
identical in construction. Also, the fence rails 16 are all alike
except possibly for variations in length.
Both the posts and the rails are made of a linear polyethylene or
other suitable plastic material using a blow molding process.
Except for the end portions, the posts and rails are hollow or
tubular so as to utilize a minimum amount of material thereby
reducing the weight and cost of the fence consistent with the
desired degree of rigidity. Further, by making the posts hollow,
simple but effective snap-in connections may be readily established
between the posts and the rails without reliance on any fasteners
because of the elastic flexibility of the post walls.
Each of the posts includes an above surface tubular portion 18
closed at the upper end by an end wall 20. A circular beveled edge
22 interconnects the end wall with the tubular portion. The tubular
portion and the end wall may be externally textured as
aforementioned. A hollow, anchor foot formation 24 is connected by
a shank 26 to the closed bottom 28 of the tubular portion. Thus,
the shank 26 and anchor 24 may be embedded in the soil 30 below
ground level 32 as shown in FIG. 1, with the shoulder 34 between
the bottom 28 and the shank abutting the ground.
Each of the posts is provided with two vertical series of openings
36 as more clearly seen in FIG. 3. The number of holes in each
series may vary depending on the height of the posts and the
desired vertical spacing between the rails connected to the posts
by snap-in formations 38 received through the openings 36. The two
series of openings are spaced 180.degree. apart for interior posts
12 as shown in FIG. 2 or angularly spaced apart by less than
180.degree.for corner posts 14 as shown in FIG. 5.
The openings 36 are smaller in diameter than the maximum diameter
of the converging heads 40 associated with each of the snap-in
locking or connector formations 38. Thus, the post is elastically
deformed adjacent the opening 36 as the connector formation 38 is
forced in and becomes locked about the neck 42 connecting the head
40 to the axially converging end walls 44 of the hollow rail at
each end, as more clearly seen in FIG. 1. The diameter of the neck
42 is substantially equal to the undeformed diameter of the opening
36.
It will be apparent, that the fence 10 may be readily assembled
from standard sized posts 12 or 14 and rails 16 with minimum effort
and without use of tools or fasteners. Further, the resulting fence
will not only be pleasing to the eye because of the variety of
colors and decorative surfaces that may be molded into the plastic
material, but will also require less attention because of its rot,
termite and oxidation resistant attributes.
* * * * *