Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Christopher Lesley Treagust0
Tony Cobden0
Date of Patent
June 5, 2007
Patent Application Number
11113458
Date Filed
April 25, 2005
Patent Primary Examiner
Patent 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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