B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/47
B60T 15/22 (2006.01) B60T 13/40 (2006.01) B60T 15/36 (2006.01) B60T 17/10 (2006.01)
Patent
CA 1071672
(Case No. 6878) BRAKE APPARATUS WITH A COMBINED BRAKE CYLINDER AND RESERVOIR ABSTRACT OF THE DISCLOSURE This invention relates to a novel railway vehicle brake apparatus that comprises a brake cylinder device having two tandem-connected pistons of unequal size, the larger of which is provided with a check valve and cooperates with a hollow cylindrical body in which it is slidably disposed to form on its respective opposite sides two fluid pressure storage reservoirs wherein is stored fluid under pressure for effecting a brake application. This brake apparatus further comprises a novel brake control valve device that is so responsive to a reduction of pressure in a train brake pipe as to first cause simultaneous shifting of both pistons in a brake-applying direction and a transfer of fluid under pressure from one side of the larger piston to the other until a chosen braking force is transmitted through brake rigging to press brake shoes against the wheels of a vehicle, Thereafter, the control valve device is operative to release fluid under pressure from the one side of the larger piston to atmosphere to increase the braking force pressing the shoes against the wheels.
296185
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