Control valve device with change-over means for direct or gradua

Details Control valve device with change-over means for direct or gradua Control valve device with change-over means for direct or gradua

1976-10-21

1977-07-05

Reger, Duane A.

Fluid-pressure and analogous brake systems

Releasing

Motor

303 36, B60T 1552

Patent

active

040336328

ABSTRACT:
A brake control valve device, for railway vehicles, embodies means to enable this control valve device to be selectively conditioned for effecting either a direct release of the brakes or a graduated release of the brakes accordingly as a removable selector valve cover member having a ported face is secured to a ported face formed on the exterior surface of the control valve device in either a first or a second position with respect to this ported face on the control valve device.

REFERENCES:
patent: 1502521 (1924-07-01), Neal
patent: 1526777 (1925-02-01), Dean
patent: 1526779 (1925-02-01), Farmer
patent: 2940798 (1960-06-01), Weber
patent: 3370893 (1968-02-01), McClure et al.

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