Pressure reduction and pressure reduction rate sensitive emergen

Details Pressure reduction and pressure reduction rate sensitive emergen Pressure reduction and pressure reduction rate sensitive emergen

1976-08-26

1977-05-31

Reger, Duane A.

Fluid-pressure and analogous brake systems

Releasing

Control pipe

303 57, B60T 1544

Patent

active

040266095

ABSTRACT:
A railway vehicle fluid pressure operable emergency vent valve responsive to a reduction of brake pipe pressure at a rate in excess of a certain rate, or at an emergency rate, for unrestrictedly venting the brake pipe to atmosphere and thus propagating an emergency brake application, but also sensitive and operable responsively to a reduction of brake pipe pressure, irrespective of rate or at a normally undetectable rate, to a value insufficient for effective brake control, for initiating an emergency brake application.

REFERENCES:
patent: 2861587 (1958-11-01), Hursen
patent: 2992861 (1961-07-01), Hursen
patent: 3165115 (1965-01-01), Erson
patent: 3175871 (1965-03-01), Wilson

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