Hydraulic device for an automatic transmission
US4957195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Jan 4, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A centrifugal hydraulic pressure cancel chamber is arranged at the back of a second piston member of a second hydraulic actuator for the second clutch. A first piston member of a first hydraulic actuator for a first clutch is situated behind the second piston. A centrifugal hydraulic pressure cancel plate is set at an inner periphery on a rotating member to prohibit axial movement and set at an outside periphery in a inside of the piston member oil-tightly. The inside surface of the second piston member and the cancel plate compose the centrifugal hydraulic pressure cancel chamber. A spring is placed between the second piston member and the cancel plate, and the centrifugal hydraulic cancel chamber and the spring work correspondingly to the first and the second piston members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.