B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/36
B60T 17/00 (2006.01) B60T 13/12 (2006.01) B60T 13/22 (2006.01) B60T 13/58 (2006.01) B60T 17/18 (2006.01)
Patent
CA 1127688
HYDRAULIC BRAKING SYSTEM ABSTRACT OF THE DISCLOSURE: Three embodiments of a hydraulic braking system are shown and described. Each embodiment pro- vides a precisely controlled hydraulic braking system for a railway vehicle, which features a pilot pressure controlled brake control valve. The pilot pressure is selectively varied by operation of pressure control and flow control valves so that the power requirements for the hydraulic braking system are minimized. The braking system can be used with either spring-apply, pressure-release or pressure-apply, spring- release braking actuators. An auxiliary hydraulic system is provided to operate the brakes if the primary hydraulic system should fail. The pilot pressure fluid which operates the brake control valve can be either hydraulic or pneumatic. The brake control valve can be provided with a pneumatic emergency brake override control.
346386
Kohler William H.
Straut John E.
Macrae & Co.
Tec Tran Corp.
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