Brake pipe vent valve for locomotive brake system
US8919892B2 · kind B2 · utility
0Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2007 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Oct 8, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/228
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The dual vent valve includes a housing having brake pipe, emergency input and exhaust ports, and first and second valves. The emergency output port is fluidly connected to the emergency input port. The first valve selectively connects the brake pipe port to the exhaust port by opening the first valve in response to an emergency signal on the brake pipe port. The second valve selectively connects the brake pipe port to the exhaust port by opening the second valve in response to an emergency signal on the emergency input port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.