B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/40
B60T 7/14 (2006.01)
Patent
CA 1305742
(Case No. 8282) ABSTRACT OF THE DISCLOSURE A penalty brake control system for a railway vehicle equipped with a straight air-type brake valve device is arranged so that failure of the vehicle operator to indi- cate his alertness and/or well-being by maintaining a foot valve pedal depressed results in an automatic penalty brake application. Pressure in a volume reservoir exhausts through a whistle to evoke a warning of an impending penalty brake application any time the foot valve pedal is released. When the volume reservoir pressure drops below a first predetermined value, an interlock pilot valve is operated to connect the volume reservoir pressure to exhaust at the brake valve device. A penalty pilot valve subject to volume reservoir pressure initiates a penalty brake appli- cation when the volume reservoir pressure drops below a second predetermined pressure. Brake application pressure in excess of this second predetermined pressure is connected to the penalty pilot valve in parallel with the volume reser- voir pressure to suppress the penalty application of a brake application is in effect through the normal brake circuit.
503105
American Standard Inc.
Fetherstonhaugh & Co.
Westinghouse Air Brake Company
Worbois Robert J.
LandOfFree
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