PANEL, UPPERMOST FLOOR PANEL Russian patent published in 2012 - IPC E04F15/02 

FIELD: construction.

SUBSTANCE: panel, uppermost a floor panel, is arranged with a core from a wood chip material or a mixture of wood chip and polymer material. The panel comprises a lower lock element arranged on the first side edge, which has the first transverse rib arranged on the lower side of the panel protruding beyond the first side edge, and the first hook arranged on the outer end of the first rib with a rear cut, and an upper local element arranged on the second side edge opposite to the first side edge, and the upper element has the second transverse rib arranged on the upper side of the panel protruding the second side edge, and the second hook arranged on the outer end of the second rib, which has at least one fixing collar, so that two identical panels are arranged as capable of connection and fixation to each other in horizontal direction and vertical direction after clicking of the fixing collar of one panel in the rear cut of the second panel. At the same time in the first transverse rib of the lower lock element there is at least one through groove with width smaller than the width of the second hook.

EFFECT: improved reliability of panels jointing.

15 cl, 7 dwg