Winches with pull cord drive
US4582299A · kind A · utility
Inventor
Key dates
| Filing date | May 14, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/7494
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A marine winch has a winch drum which is totally closed at the top, mounted on a base housing in bearings so as to rotate relative thereto on a vertical axis. The winch drum is driven in a given direction by pulling on a cord which is wound around a self-recoiling pulley in the base housing to thereby rotate the pulley and associated ratchet or clutch means and pinion gear which drives a gear ring on the winch drum. A sprag clutch is operatively connected between the winch and the base housing to prevent rotation of the winch drum in a direction opposite the given direction and to transmit load torque applied to the winch drum to a gear plate to automatically change gear ratios. An infinitely variable hydraulic drive means is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.