Auxiliary section actuator air control system
US5231895A · kind A · utility
36Cited by
30References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19251
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid pressure actuated auxiliary transmission section (14) shift control system (300)/method is provided which includes control members (246, 328) to prevent auxiliary section synchronized clutch (92, 128) damage if the main transmission section (12) is engaged during an auxiliary section shift. A differential area piston actuator (220) assembly is utilized to apply either a relative high (p*a.sub.224) or relatively low (p*(a.sub.224 -a.sub.222)) force to urge the auxiliary section high-speed ratio clutch into engagement depending upon the sensed engaged or disengaged condition of the transmission main section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.