Transmission control providing sequentially engaged high and low speed clutches
US4848530A · kind A · utility
6Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Sep 6, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/088
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clutch control for a multi-speed vehicle transmission having operator selected, hydraulically operatable clutches for the shifting of direction and speed includes a valve means which automatically engages a higher and a lower speed clutch in sequence when a direction shift is made. If the direction is shifted while the transmission is shifted to a lower speed range the next higher speed clutch will be momentarily engaged before the lower speed clutch is engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.