Emergency brake valve device for railway vehicles

Details Emergency brake valve device for railway vehicles Emergency brake valve device for railway vehicles

1976-06-28

1977-03-29

Reger, Duane A.

Fluid-pressure and analogous brake systems

Releasing

Control pipe

303 37, 303 69, B60T 1704

Patent

active

040145808

ABSTRACT:
An improved simplified emergency brake valve device including a relay valve portion responsive to brake pipe pressure reduction at an emergency rate for actuating a logic valve portion which, in turn, when actuated, causes operation of a vent valve portion via which the brake pipe is opened to atmosphere for effecting reduction of brake pipe pressure at an emergency rate at the succeeding car in the train, thereby propogating such reduction of brake pipe pressure throughout the train for effecting an emergency brake application thereon.

REFERENCES:
patent: 2417209 (1947-03-01), McCune
patent: 2830851 (1958-04-01), McClure
patent: 2926965 (1960-03-01), Wilson et al.
patent: 3160446 (1964-12-01), McClure et al.
patent: 3716276 (1973-02-01), Wilson et al.

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