Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1993-08-17
1995-12-05
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
254353, 254365, 464 46, B66D 114, F16D 702
Patent
active
054721717
ABSTRACT:
A hoist and traction machine having a mechanical brake (13), wherein a not-relative (14)-rotatable operating handle (18) is axially movably an interposed between a stopper (17) provided at an axial end of a driving shaft (5) and a driving member (8) threadedably engaged with the driving shaft (5). Between the operating handle (18) and the stopper (17) there is provided an elastic biasing member (19) for biasing the operating handle (18) toward the driving member (8) The operating handle (18) is provided with engaging projections (31), the driving member (8) is provided with free rotation control surfaces (35) in elastic contact with the engaging projections (31) respectively, and the free rotation control surfaces (35) are formed in gradient surfaces for applying resistance against movement of the driving member (8) in the return direction with respect to free rotation operation by the operating handle (18) so as to enable the free rotation control state to be held up to a desired value, whereby an input range of a pulling force of a chain during the free rotation control is expanded without reducing operability of free rotation operation.
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Honda Munenobu
Kubota Haruo
Nishi Yoshio
Ueno Yoshio
Wada Yasuo
Elephant Chain Block Company Limited
Mansen Michael R.
Stodola Daniel P.
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