Internal electronic transmission range selection (ETRS) system for an automatic transmission
US6880419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jun 3, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20116
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic transmission range selection (ETRS) system for shifting a transmission range of a transmission includes a park servo valve movable between a first position to inhibit a first flow of pressurized fluid and a second position to enable the first flow of pressurized fluid. A hydraulic servo assembly is movable between a first position and a second position based on the first flow of pressurized fluid. An actuator arm is interconnected to the hydraulic servo assembly. When the hydraulic servo assembly moves to the second position the actuator arm shifts the transmission range from a Park position to an Out-of-Park position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.