Pneumatically operated graduated release valve for rail vehicles

Details Pneumatically operated graduated release valve for rail vehicles Pneumatically operated graduated release valve for rail vehicles

1988-01-15

1988-10-04

Reger, Duane A.

Fluid-pressure and analogous brake systems

Releasing

Motor

B60T 1554

Patent

active

047751940

ABSTRACT:
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 continuous 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.

REFERENCES:
patent: 3232678 (1966-02-01), Wilson
patent: 3994536 (1976-11-01), Prada
patent: 4033632 (1977-07-01), Wilson
patent: 4067624 (1978-01-01), McEathron
patent: 4558907 (1985-12-01), Reiss et al.

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