Free-rotation control apparatus of hoist and traction machine
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United States of America Patent
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-
Nov 5, 1996
Grant Date -
N/A
app pub date -
Sep 13, 1994
filing date -
Oct 5, 1993
priority date (Note) -
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status (Latency Note)
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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.
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Cited Art Landscape
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