Electropneumatic brake control valve

Details Electropneumatic brake control valve Electropneumatic brake control valve

1996-09-06

1999-10-19

Young, Lee W.

Fluid-pressure and analogous brake systems

Multiple systems

Fluid pressure and electric

303 15, 303 36, B60T 1374

Patent

active

059676205

ABSTRACT:
An electropneumatic 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.

REFERENCES:
patent: 2897011 (1959-07-01), Cotter
patent: 2993199 (1961-07-01), Browne et al.
patent: 4052110 (1977-10-01), Banker
patent: 4344138 (1982-08-01), Frasier
patent: 5335974 (1994-08-01), Klink
patent: 5390988 (1995-02-01), Shank
patent: 5393129 (1995-02-01), Troiani et al.
patent: 5503467 (1996-04-01), Gaughan
patent: 5676431 (1997-10-01), McLaughlin et al.
patent: 5746484 (1998-05-01), Gaughan et al.

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