Convertible lift mechanism

Details Convertible lift mechanism Convertible lift mechanism

1998-07-14

1999-08-17

Cherry, Johnny D.

Elevator, industrial lift truck, or stationary lift for vehicle

Stairway assist for individual or minor barrier lift for...

187201, 187245, B66B 908

Patent

active

059379715

ABSTRACT:
A convertible lift mechanism for lifting an object from a first surface to a vertically displaced second surface includes a source of motive force, a conversion stair, and a lift linkage. The convertible lift mechanism may be utilized as a platform lift or a wheelchair lift. The conversion stair has a first configuration and a second configuration. In the first configuration, the conversion stair functions as a stair within a stairway. In the second configuration, the conversion stair has a substantially horizontal lifting surface movable between a first position and a second position. The substantially horizontal lifting surface forms at least a portion of a lift platform.

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patent: 4168134 (1979-09-01), Pohl
patent: 4285416 (1981-08-01), Dudynskyj
patent: 4457402 (1984-07-01), Del Vecchio et al.
patent: 4583466 (1986-04-01), Reddy et al.
patent: 5224723 (1993-07-01), Hatas
patent: 5234078 (1993-08-01), Smith
patent: 5632357 (1997-05-01), Matre

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