Electropneumatic brake control valve
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United States of America Patent
Stats
-
Dec 4, 2001
Grant Date -
Aug 23, 2001
app pub date -
Feb 9, 2001
filing date -
Sep 6, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ectropneumatic brake control valve unit capable of operating at the interface of the emergency brake portion or the service brake portion of a standard brake control valve as a retrofit unit or operating as a stand alone electropneumatic unit. The unit includes electric valves responsive to electrical signals and sensed brake pipe pressures to operate pneumatic valves to control the brake cylinder. The pneumatic valves are also operable independent of the electric control valves so as to allow braking with the electrical controls off or disabled. The unit can operate in combination with a complete brake control valve or with either or none of its emergency and service portions.
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