Continuous quick service valves for braking systems

Details Continuous quick service valves for braking systems Continuous quick service valves for braking systems

B - Operations, Transporting

60

T

303/46

B60T 15/18 (2006.01) B60T 15/42 (2006.01)

Patent

CA 1081288

ABSTRACT A continuous quick service valve arrangement for a direct release brake control system is provided with a sensing valve responsive to reductions of brake pipe pressure in relation to a reference pressure to apply fluid under pressure via a choke to a pulsating device which operates a quick service valve to drive pulses of air out of the brake pipe for as long as the brake pipe pressure continues to reduce for a brake application, the pulsating device is operated by a biassed member which when operated by being displaced in response to attainment of a certain pressure in a volume supplied by the sensing valve presents a greater area to the volume and opens a discharge path for the volume to permit the member to repetitively operate and reset.

317600

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