Joinder of floor tiles

Claim 1

A floor covering assembly comprising a plurality of abutting rectangular tiles and joining strips, said tiles as viewed from above together making up a continuous surface, each tile comprising a solid body of predetermined thickness and undercut in its lower face substantially about its entire periphery so as to leave a projection whereby it can be held to a locking strip, each tile being provided at each corner in its underface with a projection extending toward but terminating short of the bottom surface of the tile, each strip comprising an elongated member of predetermined thickness provided in its upper face with a pair of parallel undercut channels for receiving the projections of two tiles and thereby holding them together, the joining strips including a second pair of channels extending at an angle to the first pair, the bottoms of said strips defining substantially the same plane as the bottoms of said tiles, material being provided at the intersections of the channels in a locking strip to form independent recesses for receiving the corner projections of tiles.