Vigilance safety control system

Details Vigilance safety control system Vigilance safety control system

1982-09-20

1985-01-29

Stoner, Jr., Bruce H.

Fluid-pressure and analogous brake systems

Exterior control

Deadman type

303 20, B60T 714

Patent

active

044961936

ABSTRACT:
A vigilance safety control arrangement for periodically checking the attentiveness of a trainman. The arrangement includes a pair of capacitive charging circuits connectable to a source of voltage and a pair of resistive-capacitive discharging circuits connectable to an application and indication relay. An electrical toggle switch for periodically connecting one of the pair of capacitive charging circuits to the voltage source and one of the pair of capacitive discharging circuits to the application and indication relay for causing a magnet valve to maintain the brakes of the train in their released position.

REFERENCES:
patent: 3246140 (1966-04-01), Wrege et al.
patent: 3778116 (1973-12-01), Kennedy

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