Lifting apparatus

Details Lifting apparatus Lifting apparatus

1991-01-18

1992-03-31

Machado, Rinaldo P.

Fire escape, ladder, or scaffold

With indicator, signal or alarm

182 63, 182141, 187 18, B66F 1104, E04G 122

Patent

active

050999508

ABSTRACT:
A lifting apparatus having a least one set of paired stretchable boom assemblies which extend and contract, preferably in five stages. The boom assemblies are disposed between a chassis and a platform for raising and lowering the platform in interlocking relation with an operating mechanism, a guiding mechanism and a synchronizing mechanism. The lifting apparatus further includes a kick mechanism for auxiliarily supporting the load on the platform at a position where the platform is lowered about halfway. The kick mechanism has one end fixed to the chassis and the other end provided with a kick body capable of supporting the centers of the boom assemblies and provided with a detecting means for detecting contact between the boom assemblies and the kick mechanism.

REFERENCES:
patent: 3619007 (1971-11-01), Phillips
patent: 3820631 (1974-06-01), King
patent: 4466509 (1984-08-01), Kishi
patent: 4518061 (1985-05-01), Wehmeyer

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