Portable hoist

Details Portable hoist Portable hoist

1986-07-03

1987-09-01

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182 27, 182 16, 182 17, 182209, 182155, 182127, E04G 108

Patent

active

046902481

ABSTRACT:
A collapsible frame of a general ladder shape having elongated side rails connected by transverse support members. The frame defines an inverted U-shaped frame when in its unfolded operative position. A winch and pulleys attached to the frame are used for lifting or lowering a load. One downwardly extending leg of the frame has telescoping legs and wheels to provide for height adjustment and use as a hand truck for transporting a load. The second leg of the frame may be connected to a ladder bracket and ladder for lifting a load to an elevated location.

REFERENCES:
patent: 1021629 (1912-03-01), Reichardt
patent: 1691976 (1928-11-01), Kramer
patent: 1894489 (1933-01-01), Hirose
patent: 1934086 (1933-11-01), Page
patent: 2542398 (1951-02-01), Crumpton
patent: 3276542 (1966-10-01), Pommier

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