Step assembly for cast structures and method of installation

Details Step assembly for cast structures and method of installation Step assembly for cast structures and method of installation

1978-11-06

1980-04-01

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

52698, E04G 1504, E06C 904

Patent

active

041957091

ABSTRACT:
A step assembly and method of installing same in cast wall structures is disclosed. Tubular receptacles are disposed in place in the wall structure. Each receptacle has internal and external abutments. A step includes a pair of arms having abutments thereon which cooperate with the internal receptacle abutments to prevent step removal. A modified receptacle is insertable into a completed wall structure.

REFERENCES:
patent: 3200903 (1965-08-01), Marino
patent: 3299984 (1967-01-01), Svedahl
patent: 3374859 (1968-03-01), Dobert
patent: 3974615 (1976-08-01), Ditcher

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