Vehicle speed control device

Details Vehicle speed control device Vehicle speed control device

B - Operations, Transporting

60

T

303/18, 341/87

B60T 8/00 (2006.01) B60T 7/12 (2006.01)

Patent

CA 1041145

Abstract of the Disclosure A railroad car maximum speed limiting device including a railroad car wheel-driven gener- ator and centrifugal speed responsive switch for operating a solenoid valve to supply vacuum to the vehicle brakes from an auxiliary vacuum reservoir after the vehicle has passed a magnetic trip operating a relay means to complete the generator circuit, the improvement comprising an air cylinder operated by trainline vacuum for moving the generator and centri- fugal speed responsive switch wheel out of engagement with the car wheel for trainline operation, and a special shuttle valve on the cylinder for supplying braking vacuum to the cylinder alternately from the speed control auxiliary vacuum reservoir or from the main conventional vacuum reservoir.

226446

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