Stair system

Static structures (e.g. – buildings) – Specified wear or friction-type traffic-carrying surface – Tread-nosing; e.g. – shaped stair pad

Patent

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Details

522881, 5271804, 527412, F04F 1116

Patent

active

061159751

ABSTRACT:
A stair system employing an improved stair nose molding and back molding which provides for a stair system having a free-floating riser and a free-floating tread, the stair nose molding having a cutout with tongue for receiving grooved stair tread and a groove for receiving a riser in a sliding arrangement. The stair back molding having a groove to receive the bottom edge of the riser in a sliding arrangement. The tread is secured to the stair nose molding, the riser being slidably secured in the stair nose molding and the stair back molding, and the end of the tread being secured along with the back stair molding to the tread subflooring.

REFERENCES:
patent: 603130 (1898-04-01), De Man
patent: 2696027 (1954-12-01), Ryland
patent: 3909997 (1975-10-01), Eickhof
patent: 4321294 (1982-03-01), Naka
patent: 4455797 (1984-06-01), Naka
patent: 5073430 (1991-12-01), Aidan
patent: 5706623 (1998-01-01), Brown
patent: 5806253 (1998-09-01), Nelson

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