Tongue-and-groove floorboard

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

B - Operations, Transporting

27

M

B27M 3/04 (2006.01) E04F 15/02 (2006.01) E04F 15/04 (2006.01)

Patent

CA 2281297

A tongue-and-groove floorboard has a lower board (10) and an upper board (20) mated with the lower board (10). The lower board (10) and the upper board (20) each have a plurality of complementary channels (11) and ribs (12) longitudinally formed therein. Multiple recesses are defined between each lower board (10) and upper board (20), wherein the recesses are corresponding and can construct circular passages. Sound insulation material (30) is disposed in the passages in the lower board (10) and the upper board (20). A plurality of slots (16,17) is defined therein and being staggered respectively in the lower board (10) and the upper board (20). A tongue (21) is formed at one side of the lower board (10) and upper board (20), and a groove (22) is defined at the opposite side of the lower board (10) and upper board (20).

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