Oil pressure supply in an automatic transmission
US7648013B2 · kind B2 · utility
2Cited by
8References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2006 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Jan 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19251
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission supplies oil pressure to a hydraulic servo of a second clutch through an oil pressure supply passage extending through a first drum and a second drum, the oil pressure supply passage including a plurality of first oil holes formed in the first drum at equal, circumferential intervals, a plurality of second oil holes formed in the second drum at equal, circumferential intervals, and an annular oil passage formed between the first and second drums and connecting the first oil holes and the second oil holes. The number of first oil holes is different from the number of second oil holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.