Hydraulic servomechanism control system in automatic transmission
US5239896A · kind A · utility
3Cited by
8References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0258
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Herein disclosed is a hydraulic servomechanism control system in an automatic transmission, for modulating the oil pressure of any hydraulic servomechanism to engage or release frictional engagement devices. The control system comprises: two pressure modulating mechanisms for modulating the oil pressure of said hydraulic servomechanisms; and a shutoff mechanism for shutting off, when one of said pressure modulating mechanisms is caused to communicate with said hydraulic servomechanism, the communication between the other pressure modulating mechanism and said hydraulic servomechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.