Static structures (e.g. – buildings) – Underlying compressible layer or pad
Reexamination Certificate
2000-07-07
2002-09-24
Johnson, Blair M. (Department: 3634)
Static structures (e.g., buildings)
Underlying compressible layer or pad
C052S586100, C052S584100, C052S385000
Reexamination Certificate
active
06453632
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a wooden floor board, particularly to one possible to be assembled easily together with the DIY mode according to a consumer's liking, improving conventional DIY floor boards.
Many people decorate their rooms with conventional DIY floor boards in the way they like to save expenditure. A first known conventional DIY floor board
10
shown in
FIGS. 7 and 8
has some tenons
102
and mortises
101
formed respectively in one lengthwise side and the other lengthwise side and one lateral side and the other lateral side for assembling together with the tenons
102
of a floor board engaging the mortises
101
of another floor board. But, when any floor board
10
is broken after a period of use and has to be replaced with a new one
10
, the floor boards next to the broken one to the corner all have to be taken off. After a new one is placed instead of the old broken one, all those boards taken off are again placed back together, requiring much time and work.
A second conventional DIY floor board
20
shown in
FIGS. 9 and 10
also has tenons
201
and mortises
203
formed respectively in one lengthwise side and the other lengthwise side and one lateral side and the other lateral side, and a wedge-shaped or cuneiform groove
202
is formed in an end of each tenon
201
. In the assembling process, the tenons
201
are forcefully pushed in the mortises
203
, with the cuneiform grooves
202
forming tightness between the tenons
201
and the mortises
203
. But this second conventional DIY floor board has the following disadvantages.
1. If one floor board is broken and is desired to be replaced with a new one, many floor boards next to the broken one to the corner have to be taken off and assembled together, which is inconvenient as the first conventional one.
2. The cuneiform grooves
202
may lose their expanding force after a long period of use as the tenons
201
are constantly pressed in the mortises
203
, making it impossible to keep the tenons
201
always tightly engaged in the mortises
203
.
3. The portion of the cuneiform grooves
202
of the tenon
201
may be broken or split off after a period of use, losing its original elasticity.
SUMMARY OF THE INVENTION
An objective of the invention is to offer a wooden floor board of DIY mode, which is possible to be replaced easily after being assembled together into a complete floor on the ground of a room.
Another objective of the invention is to offer a wooden floor board of DIY mode, with connectors of the floor board never losing their elasticity from being broken or split.
REFERENCES:
patent: 4461131 (1984-07-01), Pressell
patent: 5894700 (1999-04-01), Sweet
Johnson Blair M.
Kamrath Alan
Rider Bennett Egan & Arundel LLP
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