Vigilance safety control system

Details Vigilance safety control system Vigilance safety control system

1982-09-20

1985-06-25

Stoner, Jr., Bruce H.

Fluid-pressure and analogous brake systems

Exterior control

Deadman type

B60T 714

Patent

active

045250111

ABSTRACT:
A pneumatic vigilance monitoring system which requires an engineer of a moving train to cycle an acknowledging valve within a predetermined time after the sounding of a warning whistle. The system includes a pair of parallel control circuits each having a first choke and reservoir and a second reservoir and choke connected to the acknowledging valve. A double check valve connects the second reservoirs to the warning whistle as well as to a piloted three-way valve which normally causes a brake application valve to release the brake and which causes the brake application to initiate a penalty brake application if the locomotive engineer fails to periodically cycle the acknowledging valve.

REFERENCES:
patent: 3136585 (1964-06-01), Edmund
patent: 3136586 (1964-06-01), Rush
patent: 3160445 (1964-12-01), Wilson
patent: 4165136 (1979-08-01), Erlbeck

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