B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/36
B60T 15/22 (2006.01)
Patent
CA 1111465
(Case No. 6975) ABSTRACT OF THE DISCLOSURE A railway vehicle brake apparatus including a brake control valve device having a service piston valve device operative responsive to a reduction of pressure in the train brake pipe to connect fluid pressure from the auxiliary reser- voir to a brake cylinder device to provide a service brake application, and a high pressure spool valve device operative responsive to said reductions of brake pipe pressure exceeding a certain chosen rate to connect fluid pressure from the emer- gency reservoir to the brake cylinder device in parallel with the auxiliary reservoir pressure connected thereto from said service piston valve device to provide a higher emergency brake application pressure, there being arranged a cut-off valve device between the high pressure spool valve device and brake cylinder device which interrupts the flow of emergency reservoir pressure thereto until the auxiliary reservoir pressure supplied to the brake cylinder device is reduced to a predetermined level and a one-way check valve between the service piston valve device and brake cylinder device to prevent the emergency reservoir pressure from flowing to the auxiliary reservoir.
326763
American Standard Inc.
Fetherstonhaugh & Co.
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