Dance floor construction

Claim 1

Flooring, comprising; an assembly unit comprising a covering; a first plurality of spaced parallel planks disposed beneath said covering; a second plurality of spaced parallel planks disposed beneath said first plurality of planks; and a third plurality of spaced parallel planks disposed beneath said second plurality of planks; and wherein said first and third pluralities of planks are parallel to each other, and said second plurality of planks is in perpendicular disposition to said other said pluralities of planks, and means to interconnect said covering and said planks, with said planks being so formed so as to provide cushion spaces beneath the surface of the covering, said means to interconnect said pluralities of planks and covering providing a unitized assembly, having four sides, with tongue and groove construction on each of the two oppositely disposed sides; wherein a portion of one plank of said first plurality of planks forms one of said tongues; wherein portions of said second plurality of planks and a portion of one plank of said first plurality and said covering, being formed so as to provide one of said grooves; wherein cushion spaces being provided below the entire covering surface; and whereby multiple units can be assembled to provide an entire cushioned floor of the assembled unit.