Electropneumatic air brake control system for railway vehicles
US5064251A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Apr 2, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/228
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electromagnetic air brake control system including a module portion and an integral relay valve portion. The module portion includes a brake pipe cut-off valve. A bistable electropneumatic valve device pneumatically connected to the brake pipe cut-off valve. A pole changing relay electrically connected to an electric coil of the bistable electromagnetic device. The pole changing relay having an electric coil connected to a d.c. voltage. A quick release relay having an electric connection to the d.c. voltage and having contacts connectable to contacts of the pole changing relay. A pair of relay driver circuits supplied by a supplemental power supply for causing the electric coils of the pole changing and quick release relays to be energized and deenergized in accordance with output signals received from a command control circuit and a monitor checking circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.