Structure for controlling braking action of a mechanical brake o

Details Structure for controlling braking action of a mechanical brake o Structure for controlling braking action of a mechanical brake o

1994-09-20

1996-11-19

Stodola, Daniel P.

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, 254376, 192 95, B66D 114

Patent

active

055754570

ABSTRACT:
In a lever type hoist an operation handle (18) is provided between a stopper (17) provided at the axial end portion of a driving shaft (5) and a driving member (8) screwed on the driving shaft (5) so as to be movable in the axial direction but non-rotatable relatively to the driving shaft (5). A spring (19) for energizing the operation handle (18) toward the driving member (8) is provided to bring inclined surface (31a) of the engaging projection (31) provided on the operation handle (18) into elastic contact with an engaging stepped portion (37) of the driving member (8) during the time when the mechanical brake (13) is being operated, whereby the driving member (8) can be prevented from being reversely rotated while being accompanied by a returning operation of the operation lever (16) by the engaging resistance of a feed click (14) during the time when a hoist and traction operation is being conducted under the no-load condition.

REFERENCES:
patent: 4512555 (1985-04-01), Nakamura

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