Vehicle multi-ratio transmission
US5462148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19428
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a vehicle multi-ratio transmission comprising a plurality of change-speed gear trains, including a backward directional gear train, with which synchronizer clutches are associated for actuating same, two multidisc-type synchronizer clutches (12) are employed for actuating one of forward directional gear trains, which is operated under a heavy condition, and for actuating the backward directional gear train. Cone-type synchronizer clutches (11) are employed for actuating the other gear trains. Seizing of clutch members as well as an unexpected start of the vehicle at a neutral condition of the transmission are well prevented and increase of cost for securing these advantages is suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.