Differential relay type brake cylinder maintaining valve
US9321446B2 · kind B2 · utility
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4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/385
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake cylinder maintaining valve feeds brake pipe (BP) pressure through a choke to replenish and maintain brake cylinder (BC) pressure up, when the pressure in the brake cylinder drops below its original set pressure. In one embodiment, the brake cylinder maintaining valve may be a differential type valve having an input diaphragm and an output diaphragm having different surface areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.