B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/46
B60T 15/22 (2006.01) B60T 13/40 (2006.01) B60T 15/18 (2006.01) B60T 15/36 (2006.01) B60T 15/42 (2006.01) B60T 15/54 (2006.01) B60T 17/10 (2006.01)
Patent
CA 1116660
(Case No. 7020) ABSTRACT OF THE DISCLOSURE Brake apparatus for a railway vehicle including a brake cylinder device of the type having a pair of interconnected pistons to which the vehicle brake rigging is connected, the larger piston having a pair of chambers formed on opposite sides in which air is stored, and a control valve device that is operative responsive to a reduction of brake pipe pressure to connect pressure from the one side of the larger piston to a corresponding side of the smaller piston to effect movement of these pistons to a brake application position and concur- rently vents pressure in the chamber on the other side of the larger piston. A transfer valve device is provided to inter- rupt this exhaust of pressure from the chamber on the other side of the piston until the piston has moved to application position so that the chamber volume is minimal and thus renders a minimum amount of air exhaust sufficient to produce brake applying pressure differentials across this larger piston.
339969
American Standard Inc.
Fetherstonhaugh & Co.
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