Transmission piston with contained return spring
US9080616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2011 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2300/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A subassembly for a transmission including a seal having a protrusion, a piston including a tab, and a lip about said piston, wherein an axial gap is formed between said tab and said lip, said piston also including a hole corresponding to said protrusion and operatively arranged to receive said protrusion for securing seal to said piston, a spring element disposed in said axial gap between said tab and said lip, wherein said spring element includes a finger corresponding to said tab, wherein said finger is aligned with said tab for axially locking said spring element between said tab and said lip, and wherein said tab includes a recess operatively arranged for receiving said finger for rotationally locking said spring element to said piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.