Ratio selector mechanisms
US5836207A · kind A · utility
21Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19251
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ratio selector mechanism for the selection of the operative ratio in an associated synchromesh vehicle transmission in which a fluid pressure operated actuator operates synchromesh units. The operating pressure of the actuator is varied either mechanically or electronically during selection of a given ratio in the associated transmission or dependent on the ratio being selected. A first actuator selects a shift rail, and a second actuator engages a gear. A valve member acts against a bias force which is varied based on the position of the first actuator to control the pressure in the second actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.