Transportable, twin telescopic arm platform hoist

Details Transportable, twin telescopic arm platform hoist Transportable, twin telescopic arm platform hoist

1986-08-27

1987-11-17

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Having transpositioning base and erecting means

182103, 182145, B66B 920

Patent

active

047067799

ABSTRACT:
The present invention is a transportable hoist consisting of a twin-arm telescopic unit comprising a given number of rectangular telescopic elements, which can be extended longitudinally by means of a telescopic hydraulic cylinder. A carriage with a work platform is mounted on said twin-arm unit; the carriage and work platform are moved along the unit by means of two steel cables connected to a windlass. The carriage is equipped with an automatic emergency brake. The twin-arm unit is supported by a pivoting platform mounted on a self-propelled or towed vehicle. Two telescopic cylinders are used to set the angle of said unit during use.

REFERENCES:
patent: 2241275 (1941-05-01), Shinn
patent: 3666054 (1972-05-01), Ellings
patent: 3891062 (1975-06-01), Geneste
patent: 3908801 (1975-09-01), Pohlman
patent: 3921758 (1975-11-01), Kozai
patent: 4031980 (1977-06-01), Terayama
patent: 4183423 (1980-01-01), Lewis
patent: 4491196 (1985-01-01), Bocker
patent: 4546853 (1985-10-01), Hanson
patent: 4546854 (1985-10-01), Bocker

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