Winch drive and brake mechanism
US4390161A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1981 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Mar 3, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A winch drive and brake mechanism is disclosed featuring a load compensating brake. The brake includes a fixed member and first and second rotary brake members. The first and second brake members are coaxially mounted on a drive shaft in alignment with a cable drum. The first brake member is fixed on the drive shaft. The second brake member is supported on the drive shaft between the first brake member and the fixed member for free rotation and movement axially of the drive shaft toward and away from braking engagement with the fixed member. The first brake member is engageable with the second brake member for axially moving it toward the fixed member into brake engaged position and releasing the second brake member for movement axially away from the fixed member toward a brake released position respectively in response to rotation of the first brake member relative to the second brake member in opposite angular directions. The first brake member is continuously urged by cable load on the drum in one angular direction such that when power is interrupted under any conditions, whatsoever, to the drive shaft, the first brake member rotates relative to the second brake member and axial…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.