Hydraulic actuation system for a rail vehicle
US4201277A · kind A · utility
9Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Nov 28, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61H13/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The hydraulic activators are provided with a relief valve which serves to permit communication between the disengaging cylinder chamber and the work cylinder chamber. The open position of the relief valve occurs when the release apparatus for the rotatable friction brake member is closed. The closed position of the relief valve occurs after the rotating brake is released. The relief valve can be mounted in the release apparatus of the working piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.