Control valve for reducing harshness of engagement of an automatic transmission clutch
US4966050A · kind A · utility
6Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | May 1, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/061
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve for controlling the engagement of a friction drive clutch for an automatic transmission having multiple clutches and brakes for establishing a drive mode following a neutral mode wherein the valve regulates pressure distributed to the drive clutch and wherein the valve is in fluid communication with a second clutch whereby the latter acts as an accumulator for altering the rate of pressure buildup in the drive clutch thus eliminating harshness in the clutch engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.