Free-chain device for a lever hoist

Details Free-chain device for a lever hoist Free-chain device for a lever hoist

1992-12-21

1994-11-15

Matecki, Katherine

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254352, 254366, B66D 114

Patent

active

053640730

ABSTRACT:
A function selector knob for selecting a free-chain function is provided with a selectively positioned bias dog which contacts a brake driving gear threadingly engaged on a pinion shaft, alternatively biasing the gear in a brake engaging or brake release direction as determined by an over center spring disposed between a selector knob and a pinion supported stop.

REFERENCES:
patent: 1876954 (1932-09-01), Johnson
patent: 4469308 (1984-09-01), Nakamura et al.
patent: 4483519 (1984-11-01), Nakamura
patent: 4512555 (1985-04-01), Nakamura
patent: 4768754 (1988-09-01), Nishimura
patent: 5156377 (1992-10-01), Nishimura

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