U.S. patent number 3,730,109 [Application Number 05/103,573] was granted by the patent office on 1973-05-01 for knock-down table structure.
This patent grant is currently assigned to Armstrong Cork Company. Invention is credited to Richard T. Ciuzio, William J. Kreizel.
United States Patent |
3,730,109 |
Kreizel , et al. |
May 1, 1973 |
KNOCK-DOWN TABLE STRUCTURE
Abstract
A table structure is formed of four legs and a table top unit,
all made from molded plastic. The legs are joined to the table top
through the use of a joint structure which requires no tools to
assemble and is not capable of being easily disassembled. The table
top is provided with socket arrangements for receiving projections
on the legs and a locking structure holds the two units in an
assembled position.
Inventors: |
Kreizel; William J. (Hewlett
Harbor, NY), Ciuzio; Richard T. (Brooklyn, both of, NY) |
Assignee: |
Armstrong Cork Company
(Lancaster, PA)
|
Family
ID: |
22295903 |
Appl.
No.: |
05/103,573 |
Filed: |
January 4, 1971 |
Current U.S.
Class: |
108/156; 248/188;
297/440.22; 403/361 |
Current CPC
Class: |
A47B
3/12 (20130101); A47B 13/021 (20130101); F16B
12/48 (20130101); A47B 2013/022 (20130101); F16B
2200/10 (20180801) |
Current International
Class: |
A47B
3/00 (20060101); A47B 13/00 (20060101); A47B
3/12 (20060101); A47B 13/02 (20060101); F16B
12/00 (20060101); F16B 12/48 (20060101); A47b
003/05 () |
Field of
Search: |
;108/156,157,158
;248/188,1,2,3,4,5,6,7,8,9,10 ;287/2.92A,2.92B ;297/244,440
;52/594 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gay; Bobby R.
Assistant Examiner: Finch; Glenn O.
Claims
What is claimed is:
1. A knock-down table assembly comprised of five separate units,
one unit being a molded plastic table top assembly which is
provided with a decorative finish to appear like a wood table top,
said table top assembly having polygonal socket members at each of
its four corners on the underside of the table top, four identical
leg assemblies are mounted on the table top by having the leg
assemblies inserted in the table top sockets, said leg assemblies
each comprising a tapered polygonal projection defining plural
surfaces, on one surface of the projection there is provided a
tapered spline, each of the sockets of the table top assembly
having a tapered recess corresponding in size and shape to the
tapered socket of the table leg, on one side of the socket there is
provided a recess with a shoulder, and when the projection of the
table leg is inserted into the socket of the table top assembly,
the end of the tapered spline of the projection of the table leg
engages the shoulder of the recess of the socket to lock together
the table leg and table top as a finished, assembled table
assembly.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is directed to a furniture structure, and more
particularly, to a table structure which is simple to assemble in
the user's home.
2. Description of the Prior Art
U. S. Pat. No. 3,079,120 discloses a metal leg and wood table
structure which are assembled together by a simple locking
arrangement. U. S. Pat. No. 3,131,899 shows a similar table
construction with a similar type simple locking arrangement for
fastening the table leg to the table top. Also, U. S. Pat. No.
3,202,391 shows another example of attaching a metal leg to a wood
table top structure by the use of a simple locking structure.
U.S. Pat. No. 2,965,426 discloses two elements of a table leg
structure which are meant to fasten the table leg to a table top.
Friction is used to hold a metal table leg relative to a plastic
socket in the table top.
SUMMARY OF THE INVENTION
The table assembly is formed by molding five separate units. The
four table legs are molded from plastic while the table top is
molded as a separate unit. The five individual units are shipped to
the user in a disassembled state. The user then assembles the five
units together to form the table. Since many homeowners are not of
a mechanical nature, it is necessary that the table unit be easily
assembled without the use of tools or mechanical skill. This is
accomplished by the use of a male and female joint structure with a
locking spline. The table leg has a male projection element which
is inserted into a female receptacle of the table top. The male
projection element has a projecting tapered spline which slides
into a groove of the female receptacle and locks the table leg
permanently to the table top.
The above structure provides an easily shipped assembly which may
be readily assembled by the ordinary homeowner. The assembly is
made of plastic components which permit the finish unit to give the
appearance of a high price wood structure. Once the unit is
assembled, it will stay in its assembled state and cannot easily
come apart during usage.
BRIEF DESCRIPTION OF THE DRAWING
FIG. I is a cross-sectional view of the table top and leg receiving
socket;
FIG. II is a cross-sectional view of the table leg with the
projection to be placed in the table socket; and
FIG. III is a showing of the table leg assembled to the table
top.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. I there is shown the table top assembly with its socket for
receiving the table leg. Table top assembly 2 is a molded one piece
plastic unit which has four individual sockets 4 at each of the
four corners. The sockets are molded as an integral part of the
table structure and are generally square or polygonal in shape. On
one side of the socket there is provided a recess 6. This recess 6
has a step formation forming a shoulder 8 which is utilized to lock
the table leg in position. The sides 10 of the socket or female
receptacle of the table are all tapered.
Referring now to FIG. II, the table leg 12 is provided with a
tapered projection 14. This projection is inserted into the socket
4 of the table top. A tapered spline 16 on one side of the
projection of the table leg slides into the recess 6 and the end 18
of the tapered spline engages the shoulder 8 to lock the table leg
in position relative to the table top. Referring now to FIG. III,
the assembled structure can be seen with shoulder 18 engaging
shoulder 8 to hold the table leg in position relative to the
table.
As was indicated before, the table assembly is shipped as a
knock-down unit. The four table legs are separate from the table
top during shipping. The purchaser of the assembly then need only
insert the male projection members 14 of the table legs into the
female socket 4 of the table top. The tapered spline 16 is lined up
with the recess 6. All this means is that the user must place the
side of the projection 14 with the spline relative to the side of
the socket with the recess 6. The assembly is then pushed together
and the leg is lightly tapped into position so that the incline
surface 20 of the tapered spline 16 rides over the shoulder 8 of
the groove, thereby permitting the end 18 of the spline 16 to rest
against the shoulder 8 in the recess to lock the table assembly
together.
* * * * *