The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2007
Filed:
Apr. 25, 2005
Applicants:
Tony Cobden, Sussex, GB;
Christopher Lesley Treagust, Hampshire, GB;
Inventors:
Tony Cobden, Sussex, GB;
Christopher Lesley Treagust, Hampshire, GB;
Assignee:
Lewmar Limited, , GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66D 1/30 (2006.01);
U.S. Cl.
CPC ...
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.