| 摘要 |
It permits tongue-and-groove connection of wooden or similar pieces ( 18 ) with a square or rectangular shape in linear or intermeshed composition of the pieces ( 18 ). It includes some projections ( 24 ) for connection located in two consecutive sides and there exist corresponding recesses ( 28 ) on the two sides opposite to the above. Both the projections ( 24 ) and the recesses ( 28 ) have a configuration in the form of an obtuse angle triangle, adopting an oblique arrangement in order to achieve the intermeshing and having inverted orientations for permitting the coupling between pieces ( 18 ) to be able to be done according to a simple diagonal movement of the new piece to lay. The recesses ( 28 ) and projections ( 24 ) are located in the lower third of the thickness of the piece ( 18 ), the first in a lower flange ( 29 ) and the second below a flange ( 25 ) of the central third of the thickness of the pieces ( 18 ). The visible face can be backed on to a ceramic tile or similar.
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