FLOOR COATING Russian patent published in 2012 - IPC E04F15/02 

FIELD: construction.

SUBSTANCE: floor coating comprises many separate panels laid with jointing between each other, which are equipped with fixing planks on head sides and on longitudinal sides. There are slots provided in head sides. Slots of two head sides jointing with each other match and form a fixing channel for placement of an end key, which is previously mounted into one of slots. The end key protrudes beyond the end of the slot facing the longitudinal side of the separate panel, and by means of displacement of the protruding end of the end key inside the slot it may partially move from the slot into the appropriate slot of the adjacent panel. In a slot holding an end key there is at least one groove, in which a leading surface is arranged, and where the end key ledge enters to be engaged. The end key has a wavy shape, sides of which face the decorative side and the lower side of panels at least one non-wavy area arranged at the distance from ends of the end key between two wavy areas.

EFFECT: limited displacement of a coating.

13 cl, 5 dwg