Scaffold and hoist structure

Details Scaffold and hoist structure Scaffold and hoist structure

1990-04-02

1991-10-22

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Combined

182145, 187 2, 187 6, B66B 120, E04G 118, E04G 2100

Patent

active

050587080

ABSTRACT:
A hoist for a scaffold assembly includes a track assembly with starter, extension and head sections adapted for mounting on lower, intermediate and upper frames of the scaffold assembly. The head track section includes an upper end with a suspension subframe cantilevering therefrom. A carriage assembly is movably mounted on the track assembly and is raised and lowered by a winch assembly including a tensile member connected to a winch and the carriage assembly.

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patent: 1950289 (1934-03-01), Benson
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patent: 2569653 (1951-10-01), Boedecker
patent: 2798574 (1957-07-01), Wardell
patent: 2803503 (1957-08-01), Borgman
patent: 2829929 (1958-04-01), Wardell
patent: 2833596 (1958-05-01), Borgman
patent: 2985428 (1961-05-01), Isbell
patent: 3313376 (1967-04-01), Holland
patent: 3752263 (1973-08-01), Thevenot
patent: 4378860 (1983-04-01), Newberry
patent: 4386680 (1983-06-01), Reed
patent: 4938310 (1990-07-01), Larsen

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