B - Operations – Transporting – 61 – H
Patent
B - Operations, Transporting
61
H
B61H 11/06 (2006.01) B60T 13/66 (2006.01) B60T 15/42 (2006.01) B60T 17/04 (2006.01) B61C 15/00 (2006.01)
Patent
CA 2280707
A manifold (24) is interposed between a pipe bracket (26) and a service valve (30) of a passenger rail car (20) braking system (22) also having a brake application relay valve (32), a primary control reservoir (48), a emergency control reservoir (54), and a main reservoir (44). The manifold includes electronically controlled emergency fill (78), normal fill (80), vent (82), and bypass (84) valves and pneumatically controlled secondary emergency fill (136), secondary normal fill (138), secondary vent (140) and manifold relay (142) valves. Electrical signals are received by the electronically controlled valves (78, 80, 84) which then operate the pneumatically controlled valves (136, 138, 142) to transmit pressure from the control reservoirs (48,54) to a brake application relay valve (32). The brake application relay valve then operates to transmit pressure from a main reservoir (44) to a braking device (36) which brakes the passenger rail car (20). When the braking device (36) is to cease braking, the vent valves (82, 140) operate to vent pressure from the brake application relay valve (32) which then ceases the transmission of pressure from the main reservoir (44) to the. braking device (36). Speed control orifices (174, 176) and a volume adding chamber (160) are used to fine tune the braking system (22).
Hrenchir Robert D.
Klink Douglas D.
Macrae & Co.
Westinghouse Air Brake Company
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