Electropneumatic brake control valve
US6457782B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Apr 17, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/665
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electropneumatic brake control valve unit capable of operating at the interface of the emergency brake portion or the service brake portion of a standard brake control valve as a retrofit unit or operating as a stand alone electropneumatic unit. The unit includes electric valves responsive to electrical signals and sensed brake pipe pressures to operate pneumatic valves to control the brake cylinder. The pneumatic valves are also operable independent of the electric control valves so as to allow braking with the electrical controls off or disabled. The unit can operate in combination with a complete brake control valve or with either or none of its emergency and service portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.