Frustoconical drum winch for lifting loads with hook reduced approximation lifting height
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United States of America Patent
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May 8, 2018
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N/A
app pub date -
May 18, 2015
filing date -
May 18, 2015
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Abstract
A load lifting winch suspending a load from a hook (3) and a cable (5) which is wound onto a frustoconical drum (1) in order to reduce the winch vertical dimension when the hook (3) is in the fully upright position allowed by available vertical space elevation, and simultaneously decrease the forces applied to the lifting drive motor (4) as the load rises.
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