Pneumatically operated graduated release valve for rail...

B - Operations – Transporting – 60 – T

Patent

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303/46

B60T 15/54 (2006.01)

Patent

CA 1265563

PNEUMATICALLY OPERATED GRADUATING RELEASE VALVE DEVICES FOR RAILWAY VEHICLES ABSTRACT OF THE INVENTION Passenger rail vehicle brake control valve apparatus includes, a control valve device of the type limited to direct release of the brakes, having service, emergency, and continu- ous quick service portions secured to a pipe bracket, and a graduated release valve portion governed jointly by brake cylinder pressure, brake cylinder exhaust passage pressure from the control valve device, and brake pipe pressure to at times modify output of the control valve device to provide for graduated control of the passenger rail vehicle brakes.

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