Continuous quick service valves for braking systems

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

1978-12-04

1980-06-10

Reger, Duane A.

Fluid-pressure and analogous brake systems

Automatic

Synchronizing

303 82, B60T 1542

Patent

active

042069491

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.

REFERENCES:
patent: 1487692 (1924-03-01), Thomas
patent: 4070068 (1978-01-01), Wickham
patent: 4103977 (1978-08-01), Wickham

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