Winch construction having axially shiftable face gear
US4161126A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1977 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Feb 9, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S475/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A winch construction including a frame having a winch drum journalled for rotation thereon, the winch drum having a hollow hub. A bidirectional, rotary output, hydraulic motor is mounted on the frame and has an output shaft extending into the hub. A first set of planetary gears is contained within the hub and includes a sun gear driven by the shaft, a planet gear engaging the sun gear and journalled on a rotatable carrier, and a ring gear engaging the planet gear. A second planetary gear set is disposed within the hub and includes a sun gear, at least one planet gear engaging the sun gear and journalled on the drum within the hub and a ring gear engaging the planet gear. An axially shiftable face gear is coupled to the carrier of the first set for rotation therewith and a motor is provided for selectively axially shifting the face gear between positions engaging the sun gear of the second set and the drum within the hub. A hollow shaft is concentric about the motor shaft and extends within the hub. A third planetary gear set is within the hub and includes a sun gear affixed to the hollow shaft, a planet gear engaging the sun gear and journalled on the frame, and a ring gear engagin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.