Transmission piston with retained release spring
US9568100B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2013 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49249
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A piston assembly for a transmission includes a piston housing and a release spring. The piston housing has a bore including a first radial wall and a circumferential wall. The release spring has a first radially outwardly extending finger portion, a second radially outwardly extending finger portion, and a conical portion. The first finger portion is for pressing engagement with the first radial wall and the second finger portion is for pressing engagement with the circumferential wall. The conical portion is disposed radially inward of the first and second finger portions. In an example embodiment, the piston housing includes a second radial wall for pressing against a clutch pack for the transmission. In some example embodiments, the piston assembly includes a seal plate, fixed to the piston housing and arranged to retain at least one piston seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.