Power lift-assist apparatus

Details Power lift-assist apparatus Power lift-assist apparatus

1988-03-28

1989-09-19

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

B66F 300

Patent

active

048674176

ABSTRACT:
The present invention defines a power lift-assist apparatus that includes a base platform and a load-support platform adapted to move in parallel relation to the base platform. Mounted to the base platform is a pneumatic motor comprising a substantially stationary piston formed with an internal pressure chamber therein and a slidable cylinder which is provided with a pair of cam rollers that are positioned to engage respective cam recesses formed in a carriage-lift framework whereby the load-support framework is activated from a retracted position to a fully extended position.

REFERENCES:
patent: 2862689 (1958-12-01), Dalrymple et al.
patent: 3570835 (1971-03-01), McPherson

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