Winch and winch drum
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United States of America Patent
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Jun 5, 2007
Grant Date -
Jan 12, 2006
app pub date -
Apr 25, 2005
filing date -
Apr 26, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a winch drum for rotation about a rotation axis. The winch drum has a rope-receiving surface with a plurality of raised ridges defining substantially helical channels between them. The channels provide guidance for rope along the rope-receiving surface at least during rope release. The ridges have a meandering shape extending around the drum, formed from a series of alternating circumferential and axially inclined ridge elements.
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