Patent ID: 6115975
Filing Date: 2000-09-12
Classification: E04F

Abstract:
A stair system comprising a plurality of parallel stair stringers cut out for one or more steps, each step of the stringers bridged by a tread subflooring and a riser subflooring; the stair system comprised of one or more steps, each step comprising:a tread/flooring positioned on the stair tread/flooring subfloor and having a groove in its front edge receiving a corresponding tongue of a stair nose molding;a riser with a top nose portion and a bottom edge portion;a stair nose molding secured to the top of a step having a perpendicular planar back side and top side to position the stair nose molding to the stair subflooring, a front side, and a bottom side, a cutout in the top side extending to the back side with a vertical front wall and horizontal bottom wall to receive the tread/flooring with the top side of the tread/flooring coplanar with the top side of the stair nose molding, a tongue extending outwardly from the vertical front wall and received and secured in the groove in the front side of the tread flooring, and a groove with parallel walls extending upwardly into the stair nose molding from the bottom side and receiving in a sliding relationship the top edge portion of the riser; anda stair back molding having a perpendicular, planar back side and bottom side to position the molding back side against the stair subfloor and the bottom side against the stair tread/flooring below the step, and a groove with parallel walls extending downwardly into the stair back molding from the top side receiving the bottom edge portion of the stair riser.