Lock-up converter clutch with centrifugal control valves
US4091899A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1977 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Apr 18, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter and lock-up clutch in which a single plate fluid operated clutch is disposed between the turbine and the input shell of the torque converter. The clutch engagement chamber is formed between the turbine and the clutch plate while a clutch disengagement chamber is formed between the input shell and the clutch plate. A normally open centrifugally responsive valve is mounted on the clutch and provides a controlled flow path between the engagement and disengagement chambers in response to clutch speed thereby controlling the pressure differential between the chambers when the clutch speed is less than a predetermined value. A normally closed centrifugally responsive valve is mounted on the clutch and provides a controlled flow path between the engagement and disengagement chambers in response to the speed of the clutch, thereby controlling the engagement force of the clutch when the speed of the clutch is equal to or greater than the predetermined speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.