Hydraulically-actuated shift system for a transfer case
US5377800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | May 4, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2023/0693
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a hydraulically-actuated shift system that is operable for shifting a mechanical shift apparatus of a power transfer device between first and second operative positions. The hydraulically-actuated shift system includes a hydraulic circuit for providing a source of hydraulic power, a hydraulic actuator for selectively moving a clutch sleeve of the mechanical shift mechanism between the first and second drive positions, and an electric control circuit for controlling selective actuation of the hydraulic actuator. The shift system is particularly well-suited for use with four-wheel drive transfer cases for permitting the vehicle operator to shift between two-wheel and four-wheel drive modes and or between various speed ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.