Free-rotation control apparatus of hoist and traction machine

Details Free-rotation control apparatus of hoist and traction machine Free-rotation control apparatus of hoist and traction machine

1994-09-13

1996-11-05

Jillions, John M.

Implements or apparatus for applying pushing or pulling force

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

Device includes rotatably driven, cable contacting drum

254353, 254357, B66D 114

Patent

active

055708722

ABSTRACT:
In a hoist and traction machine including a free rotation control apparatus, a free-rotation spring 19, for urging an operating handle 18 toward a driving member 8 and also urging the driving member 8 in the brake releasing direction, is interposed between the driving member 8 and a stopper 17 provided on a driving shaft 5. When the operating handle 18 is pulled out, the driving member 8 is rotated to move away from a driven member 7 by a torsional urging force of the spring 19 and thereby a braking ratchet wheel 11 and braking plates 9, 10 is released. Engagement lugs 31 are then brought into resilient contact with free rotation surfaces 35 via an axial urging force of the spring 19 to maintain controlled free-rotation.

REFERENCES:
patent: 4469308 (1984-09-01), Nakamura et al.
patent: 4483519 (1984-11-01), Nakamura
patent: 4512555 (1985-04-01), Nakamura

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