Winch having drum of two diameters for alternative engagement by a line at two speeds
US5829736A · kind A · utility
21Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1995 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Aug 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S242/903
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sailboat winch used for trimming lines of alternate sails, such as a jib and a spinnaker, has a drum with upper and lower drum portions of different diameters separated by a continuous radially projecting lip. The upper drum portion has a first diameter and is used for trimming the jib at maximum power. The lower drum portion has a diameter greater than the first diameter and is used for trimming the spinnaker lines. The radial extent of the lip is sufficient to prevent a line, when wrapped on the lower drum, from slipping upwardly and becoming disengaged from the lower drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.