Operator-actuated elevating device

Details Operator-actuated elevating device Operator-actuated elevating device

1976-01-12

1977-09-20

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Platform with elevating or lowering means

Operating means on platform

182103, 187 9E, 187 10, E06C 712, B66B 920

Patent

active

040490815

ABSTRACT:
An elevatable operator-actuated lifting device, including a lower support frame and a platform section telescopically interfitted with the support frame as to be elevatable with respect thereto. Hydraulically actuated piston and cylinder means are provided for telescoping and de-telescoping the platform section with respect to the support frame, to enable elevation and lowering of the platform section. Means moveable with the platform section, including a manually actuated hydraulic pump, enable pressurization and de-pressurization of the piston and cylinder means, to thereby enable raising and lowering of the platform section by an operator standing thereupon.

REFERENCES:
patent: 2576277 (1951-11-01), Biegen
patent: 3052323 (1962-09-01), Hopfeld
patent: 3196981 (1965-07-01), Winnall
patent: 3799289 (1974-03-01), Cecere

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