Uncoupling valve with override feature

Details Uncoupling valve with override feature Uncoupling valve with override feature

B - Operations, Transporting

60

T

303/36

B60T 7/12 (2006.01) B60T 15/60 (2006.01) B60T 17/04 (2006.01)

Patent

CA 1074837

UNCOUPLING VALVE WITH OVERRIDE FEATURE Abstract of the Disclosure An uncoupling valve for use in rail car brake systems having a pressurized supervisory pipe includes opposed piston motors which hold the valve open long enough to depressur- ize the supervisory pipe and cause an emergency brake applica- tion, when two cars are uncoupled accidentally. On the other hand, the valve includes a controlled source of pressure for overpressurizing one of the piston motors to hold the valve closed to prevent depressurization of the supervisory pipe, when two cars uncoupled intentionally.

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