High performance intermediate servo assembly and method of use
US7047611B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2005 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Apr 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49716
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A high performance intermediate servo assembly wherein the servo piston has been modified to provide at least a 17% increase in surface apply area and a corresponding increase in hydraulic pressure delivered to the 2nd gear clutch band which it actuates. The present servo piston is reconfigured to an overall length equivalent to the assembled stack-up dimensions of the original equipment servo piston, accumulator, accumulator spring, and spring retainer components and integrates the critical working surfaces thereof to retain proper function. Such original equipment components have been eliminated to simplify the intermediate servo assembly operation since shift feel is not a concern in this application. O-ring seals on the original equipment servo piston are replaced by high performance seals such as quad-lobed seals to ensure hydraulic integrity under the increased fluid pressure generated. A method of replacing the original equipment components with the present servo assembly is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.