Pulley assembly for improving the cooperation between a winch and a cable actuated thereby
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United States of America Patent
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-
Oct 13, 1981
Grant Date -
N/A
app pub date -
Aug 13, 1979
filing date -
Aug 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In this cable hoisting apparatus at least two pulleys disposed in a common plane have in the one a semi-circular-sectioned groove and in the other a V-shaped groove section, the first pulley receiving the load and the other pulley being responsive to the tightening mechanism controlled by the load. Thus, the pulley having a semi-circular sectioned groove will not damage the cable and the cable is retained therein by adherence, thus reducing as much the load exerted on the cable section engaging the second pulley, whereby a lesser retaining effort is exerted on this second pulley; when a pressure mechanism is provided for tensioning the cable in proportion to the load, said mechanism is associated with the pulley having the V-shaped groove.
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