Electro-pneumatic apparatus for graduated brake release
US4105257A · kind A · utility
9Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1977 |
| Grant date | Aug 8, 1978 |
| Priority date | — |
| Expiry date | Apr 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electro-pneumatic circuit is provided for cycling a holding magnet valve located in the brake cylinder exhaust pipe of a rail car brake system. As brake pipe pressure rises to signal full or partial release of the brakes, the holding valve is alternately opened and closed to provide a graduated release. The circuit is particularly adapted for rail cars having an electrical train line for controlling the holding valve to permit such cars to be used with other types of cars having a purely pneumatic control for graduated brake release.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.