Winch drive mechanism
US4426064A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Mar 25, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/14
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A compact and rugged drive mechanism for a winch of high pull rating is disclosed featuring a cycloid drive of powerful construction which serves to provide a driving connection between a cable drum and a reversible motor driven, two stage chain and sprocket drive to an input drive shaft. The cycloid drive includes a ring gear and cycloid gear in meshing engagement with the ring gear. The cycloid gear is supported for eccentric rotation within the ring gear. A clutch pin is releasably secured in fixed relation to the ring gear and a fixed housing to prevent ring gear rotation during normal power-in and power-out modes of operation under cable load. Controlled free spooling of the drive mechanism is effected, when desired, upon removing the clutch pin to render it inoperative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.