Tongue-and-groove floorboard

Details Tongue-and-groove floorboard Tongue-and-groove floorboard

1999-09-07

2001-05-29

Johnson, Blair M. (Department: 3634)

Static structures (e.g., buildings)

Module or panel having discrete edgewise or face-to-face...

Having integral key

C052S582100, C052S589100, C428S537100

Reexamination Certificate

active

06237296

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to a tongue-and groove floorboard, and more particular to a floorboard which will not have any deformation and which can insulate sound.
2. Description of Related Art
Tongue-and-groove floorboards are a conventional material used in construction. A conventional tongue-and-groove floor is made of a plurality of planks, as shown in
FIGS. 8-9
. The tongue-and-groove floorboard (
60
) comprises a tongue (
61
) formed at one narrowside of the plank and a groove (
62
) defined at an opposite narrow side. A plurality of channels (
63
) are defined in the bottom of the floorboard (
60
). In construction, the tongue (
61
) of a first floorboard (
60
) is matched with the groove (
62
) of a second floorboard (
60
), and the groove (
62
) of the first floorboard (
60
) is matched with the tongue (
61
) of a third floorboard (
60
). Thus, a floor comprises a plurality of tongue-and-groove floorboards fitted together in the manner described above.
However, the conventional floorboard (
60
) generally has deformations caused by the differences in humidity and dampness of construction areas. If the deformation is generated on the floorboards (
60
) prior to construction, the deformed floorboards (
60
) are scrapped and thus increase the costs of construction. When the deformation is generated after the floorboards (
60
) have been laid as a finished floor, destroyed the entire floor must be ripped up, discarded, and the work begun again.
Therefore, it is an objective of the invention to provide an improved tongue-and-groove floorboard to mitigate and/or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide a tongue-and-groove floorboard that will not deform under varying humidity and dampness.
Another objective of the present invention is to provide a tongue-and-groove floorboard to insulate sound.
Another objective of the present invention is to provide an inexpensive tongue-and-groove floorboard.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 1864774 (1932-06-01), Storm
patent: 1931650 (1933-10-01), Elmendorf
patent: 2088238 (1937-07-01), Greenway
patent: 2318889 (1943-05-01), Sanford
patent: 5283102 (1994-02-01), Sweet et al.
patent: 5566517 (1996-10-01), Ishii et al.
patent: 6065264 (2000-05-01), Imler et al.
patent: 258794 (1949-05-01), None
patent: 2318533 (1974-10-01), None
patent: 3741907 (1987-11-01), None
patent: 20468 (1915-12-01), None
patent: 46433 (1932-11-01), None
patent: 2686 (1881-01-01), None
patent: 8943 (1884-01-01), None

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