Self-raising work platform assembly

Details Self-raising work platform assembly Self-raising work platform assembly

1991-10-15

1992-11-03

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

182146, 182229, E04G 120

Patent

active

051599937

ABSTRACT:
The self-raising work platform assembly includes a pair of spaced towers adapted to be erected alongside a building structure, sleeve members surrounding and guided along the respective towers, joists extending between and releasably hooked to the sleeves, a flooring supported by the joists and chain blocks carried by the sleeves. The chains can be hooked to the tower to raise the sleeves, the joists and the flooring, to the level at which work on the building is to be effected.

REFERENCES:
patent: 771878 (1904-10-01), Laughlin
patent: 866078 (1907-09-01), Sims
patent: 2244374 (1941-06-01), Riblet
patent: 3318414 (1967-05-01), Meek
patent: 4262773 (1981-04-01), Basham
patent: 4641728 (1987-02-01), McCabe
patent: 4809814 (1989-03-01), St-Germain

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