Fluid-pressure and analogous brake systems – Automatic – Equalizing valves
Patent
1986-03-10
1987-07-07
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Automatic
Equalizing valves
303 54, 303 81, 303 86, B60T 1134
Patent
active
046782419
ABSTRACT:
An equalizer discharge valve for use on a railroad air brake system includes a valve housing having an equalizer chamber formed therein above a brake pipe chamber and separated by a piston, diaphragm configuration. The diaphragm is sealed on the outer circumference by the connection to the housing and on the inner circumference by the connection to the piston. A connecting passage formed in the piston has a check valve disposed therein such that fluid pressure can only flow from the equalizer chamber to the brake pipe chamber. An exhaust valve, disposed between the brake pipe chamber and an exhaust chamber, vents the brake pipe chamber when opened as corresponds to selected venting of the equalizer chamber fluid pressure. A back pressure chamber and piston configuration is formed above the equalizer chamber such that fluid pressure from the exhaust chamber can be communicated thereto to counterbalance the force on the piston exerted from the brake pipe side during an exhaust operation.
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Ikeda Mitsuhiro
Tamamori Hideo
Baier G. P.
Butler Douglas C.
Nippon Air Brake Co., Ltd.
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