Electro-pneumatic apparatus for graduated brake release

Details Electro-pneumatic apparatus for graduated brake release Electro-pneumatic apparatus for graduated brake release

1977-04-29

1978-08-08

Kunin, Stephen G.

Fluid-pressure and analogous brake systems

Multiple control

Fluid and electric

303 3, 303 74, B60T 1370

Patent

active

041052579

ABSTRACT:
An electro-pneumatic circuit is provided for cycling a holding magnet valve located in the brake cylinder exhaust pipe of a rail car brake system. As brake pipe pressure rises to signal full or partial release of the brakes, the holding valve is alternately opened and closed to provide a graduated release. The circuit is particularly adapted for rail cars having an electrical train line for controlling the holding valve to permit such cars to be used with other types of cars having a purely pneumatic control for graduated brake release.

REFERENCES:
patent: 2897011 (1959-07-01), Cotter
patent: 3510173 (1970-05-01), Enavi et al.

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