Oil pressure control device of automatic transmission
US6835151B2 · kind B2 · utility
7Cited by
6References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 24, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jun 24, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil pressure control device has bypass drain oil passages that bypass a control valve and that are capable of draining the engaging pressure K from a hydraulic servo of a clutch when releasing the clutch. A drain-prohibiting check ball blocks a drain path between a manual valve and an input port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.