Manual hoist and traction machine
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United States of America Patent
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Sep 17, 1996
Grant Date -
N/A
app pub date -
Dec 13, 1993
filing date -
Dec 16, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A manual hoist and traction machine wherein an outer diameter of a first lining plate constituting a mechanical brake is made smaller than an inner diameter of a driven disc of a handwheel. The outer diameter of a second lining plate and of a driven disc are made smaller than an inner diameter of a cylindrical portion of a braking ratchet wheel, and the first and second lining plates are formed of a lining raw material having improved performance with a compressive strength of 15 (Kgf/mm.sup.2) or more and a maximum strain of 12 (10.sup.-3 mm/mm) or more.
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