Fluid-pressure and analogous brake systems – Miscellaneous operations on control pipe
Patent
1992-02-25
1993-03-02
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Miscellaneous operations on control pipe
137237, 137244, 303 68, 303 81, B60T 1502
Patent
active
051903598
ABSTRACT:
A pressure relief valve for a railway emergency brake system that is simple in construction, easy to manufacture and to assemble and that, in operation, is self-cleaning of brake pipe dirt and debris. The inventive valve comprises a valve body having a hollow space being divided by a diaphragm into a first and a second chamber. Chambers are coupled via an orifice in the diaphragm, coupling pressure from the first chamber to the second. The valve comprises a peg aligned with the orifice, penetrating and cleaning the latter when the diaphragm moves from a closed position into an open position.
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Butler Douglas C.
Pulse Electronics, Incorporated
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