Automatic transmission
US4223960A · kind A · utility
1Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Jun 29, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/0434
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Increased resistance to excessive wear rate is provided in certain automobile automatic transmissions by providing a combination thrust-washer/radial-bushing at a certain position on the oil pump stator where the customarily manufactured transmission is provided only with a thrust-washer. The combination thrust-washer/radial-bushing provides bearing surfaces for the direct clutch drum to revolve against in both the lateral and radial directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.