Winch
US4208036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Jul 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19172
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A manually powered multi-speed winch has an automatic drive disengagement upon drive reversal which is provided by an axially movable member in one drive train which in a first axial position is engageable for drive transmission through a pawl and ratchet unidirectional drive means. The drive means in its drive-transmitting condition prevents movement of the member away from that first position. Upon drive reversal the unidirectional drive means is ineffective either to transmit drive or to maintain the member in its first position and it moves axially to a second position in which the drive means are disengaged. The member is biased towards that second axial position but is manually movable to the first by a control button accessible at the outside of the winch. The button may be lockable to override the automatic disengagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.