Control system for automatic transmission with overdrive device
US4462276A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Aug 31, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/083
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission having a torque converter, an automatic transmission apparatus comprising a planetary gear device and a forward clutch, and a final reduction gear device connected to an output shaft of the automatic transmission apparatus. An overdrive device comprising a fluid operated overdrive clutch and overdrive gears is provided between the output shaft of the torque converter and the final reduction gear device. A hydraulic circuit is provided for supplying pressure oil to the forward clutch and the overdrive clutch. An electro-magnetic valve is provided to be operated by a manual switch for supplying the pressure oil to the overdrive clutch for establishing the overdrive transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.