Actuator for gear shifting mechanisms for motor vehicles
US5957028A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | May 2, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/307
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An actuator for a gear shifting mechanism of a motor vehicle has a housing with pressure chambers and one connector opening into each pressure chamber for supplying a pressure medium into the pressure chambers. A control member is positioned in the housing so as to be axially displaceable in the housing by the pressure medium into different switching positions. A first and second auxiliary piston are supported on the control member and displaceable relative to the control member by the pressure medium. The first auxiliary piston has a first end facing away from the second auxiliary piston, the first end of the first auxiliary piston having a first abutment. The second auxiliary piston has a first end facing away from the first auxiliary piston, the first end of the second auxiliary piston having a first abutment. The first auxiliary piston delimits at least partially the first pressure chamber and the second auxiliary piston delimits at least partially the second pressure chamber. The housing has at least one counter abutment for each auxiliary piston. The first auxiliary piston has at least one second abutment. The second auxiliary piston has at least one second abutment. The cont…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.