Apparatus for preventing release of an emergency brake applicati

Details Apparatus for preventing release of an emergency brake applicati Apparatus for preventing release of an emergency brake applicati

1975-10-23

1976-10-26

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Inertia control

188181R, 303 81, 303 86, B60T 802, B60T 1502

Patent

active

039880419

ABSTRACT:
Apparatus on each vehicle in a train, for effecting a release of an emergency brake application upon a complete stop of the train, comprises a fluid pressure operated brake pipe vent valve device that is supplied with fluid under pressure from a quick action chamber when the emergency brake application is effected, a release valve device operable upon the release of fluid under pressure therefrom to vent fluid under pressure from the brake pipe vent valve device to atmosphere to cause closing of the brake pipe vent valve thereby enabling recharging of the brake pipe to effect a release of the prior emergency brake application, and a speed responsive device for supplying fluid to the release valve device at a pressure proportional to the speed of the train. Accordingly, upon a complete stop of the train, the release valve device is no longer supplied with fluid under pressure whereupon this valve device releases fluid under pressure from the brake pipe vent valve device thereby allowing a spring to close the brake pipe vent valve after which the brake pipe can be charged and the brakes released.

REFERENCES:
patent: 3136587 (1964-06-01), May
patent: 3468585 (1969-09-01), Wilson
patent: 3761137 (1973-09-01), Green et al.
patent: 3823984 (1974-07-01), Parfitt et al.

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