Automatic transmissions
US4212571A · kind A · utility
2Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1978 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Jun 29, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/5621
- WIPO fieldMachine tools
- 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. A reamer tool designed specifically for modifying the rotor portion of the direct clutch drum is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.