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
1990-02-07
1990-08-14
Matecki, Katherine A.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
59 93, F16G 1500
Patent
active
049480987
ABSTRACT:
A lever-operated hoist chain equipped with a cargo chain slip-out preventive mechanism. A slip-out preventive member linked to the unloaded side end part of a link chain in a hoist chain is made of a metal block excelling in impact resistance, and has a width greater than the interval between both side plates of the main body frame. Therefore, whether the load applied on the cargo lifting hook is large or small, if the let-off of the link chain unexpectedly exceeds the limit and the free end part side is excessively drawn out to the load side having the hook, the slip-out preventive member abuts against the outer circumference of the both side plates of the main body frame, and securely blocks the slip-out of the link chain free end part, so that the safety of the work is guaranteed.
REFERENCES:
patent: 62401 (1867-02-01), Eades
patent: 938359 (1909-10-01), Wedell
patent: 2656150 (1953-10-01), Lock
patent: 2658721 (1953-11-01), Coffing
patent: 3139268 (1964-06-01), Carroll
patent: 4398387 (1983-08-01), Bary
Matecki Katherine A.
Vital Kogyo Kabushiki Kaisha
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