Apparatus and method for pneumatically controlled graduated...

Details Apparatus and method for pneumatically controlled graduated... Apparatus and method for pneumatically controlled graduated...

B - Operations, Transporting

60

T

B60T 15/54 (2006.01) B60T 15/18 (2006.01) B61H 13/00 (2006.01)

Patent

CA 2558723

A graduated release valve for a rail vehicle having a pneumatic control valve, a brake pipe, at least one reservoir charged from the brake pipe, and a brake cylinder device, includes a metering valve communicating with the brake cylinder device and controlling the exhaust of pressure therefrom responsive generally to increases in brake pipe pressure. The metering valve communicates with a relatively small volume charged from the at least one reservoir, the volume being communicated with the brake pipe when the pneumatic control valve triggers a service accelerated release.

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