Automatic transmission with overdrive device
US4428253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Aug 31, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H37/042
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission having a torque converter comprising an impeller connected to the crankshaft of an internal combustion engine and a turbine driven by the impeller by oil, an automatic transmission apparatus comprising a planetary gear device and a fluid operated brake and clutch devices connected to an output shaft of the turbine, an oil pump driven by the impeller through an oil pump drive shaft for producing pressure oil applied to the fluid operated brake and clutch devices, and a final reduction gear device connected to an output shaft of the automatic transmission apparatus. An overdrive device comprising an overdrive clutch and overdrive gears is connected between the oil pump drive shaft and an intermediate shaft. The intermediate shaft is connected between an output shaft of the overdrive gears and the final reduction gear device, and a valve is provided for applying the pressure oil to the overdrive clutch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.