Three-position shift actuator
US5528949A · kind A · utility
20Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Jan 11, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A three-position actuator assembly for selectively shifting a three-speed splitter type auxiliary transmission section (14) is provided. The actuator assembly includes a piston portion (160) for axially moving a selected one of two shift forks (142/148) and a pneumatic control circuit (162) comprising three three-way, two-position solenoid controlled valves (202/204/206) and two three-way shuttle valves (214/216). Only one solenoid is energized for each selectable actuator position and a failure of the pneumatic (200) or electrical power sources to the control circuit will not cause the actuator to shift out of an engaged ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.