Safety latch for a portable hydraulic jack

Details Safety latch for a portable hydraulic jack Safety latch for a portable hydraulic jack

1990-06-06

1991-08-27

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

254DIG3, B60P 148, B66F 504

Patent

active

050427776

ABSTRACT:
A safety latch for the hydraulic power release mechanism on a low-slung, floor-mounted portable hydraulic lifting jack of the type operated by an elongated handle that is pumped back and forth in order to raise a lifting arm, and which handle may be twisted about its longitudinal axis to release hydraulic pressure and lower the lifting arm, is disclosed. The safety latch will releasably hold the handle against twisting.

REFERENCES:
patent: 4018421 (1977-04-01), Tallman
patent: 4210314 (1980-07-01), Carroll et al.
patent: 4241899 (1980-12-01), Kaneko
patent: 4850568 (1989-07-01), Hung

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