System and method for fluid assisted shifting of mechanical transmissions
US6000294A · kind A · utility
14Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Nov 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20024
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shifting mechanism for a mechanical transmission includes a selector shaft having associated shift forks for engaging or disengaging a selected gear ratio and a control rod directionally coupled to the selector shaft for positive rotation while allowing a predetermined relative axial translation. A cylinder assembly is operatively associated with the selector shaft and control rod to provide a fluid coupling which applies a force on the selector shaft in response to the relative translation between the selector shaft and the control rod to reduce the operator effort required to complete a gear shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.