Vehicle braking control valve apparatus for quick service operat

Details Vehicle braking control valve apparatus for quick service operat Vehicle braking control valve apparatus for quick service operat

1977-09-21

1978-08-01

Kunin, Stephen G.

Fluid-pressure and analogous brake systems

Automatic

Synchronizing

303 69, 303 82, B60T 1542

Patent

active

041039777

ABSTRACT:
A continuous quick service device is proposed for use in conjunction with a direct release brake controlling triple valve and which, while not interfering with the emergency valve operation, operates by employing quick action chamber air both as a reference against which brake pipe pressure reductions are detected and as a source of air to operate a pressure responsive device in a reciprocating manner to discharge pulses of air from a reducing brake pipe to afford quick service operation of the triple valve both for initial application from a brakes released condition and for subsequent brake pipe pressure reductions giving rise to increased brake applications. A relay valve serves to operate the pressure responsive device to provide additional sensitivity.

REFERENCES:
patent: 3966269 (1976-06-01), McEathron
patent: 4014580 (1977-03-01), Bridieum

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