Brake control valve device with movable control reservoir chargi

Details Brake control valve device with movable control reservoir chargi Brake control valve device with movable control reservoir chargi

1976-01-19

1977-05-24

Halvosa, George E. A.

Fluid-pressure and analogous brake systems

Automatic

Equalizing valves

303 36, 303 64, 303 69, 303 80, B60T 1134

Patent

active

040251268

ABSTRACT:
A brake control valve device operated by a reduction in brake pipe pressure on one side of a movable abutment relative to control reservoir pressure on the opposite side embodies in the abutment a control reservoir charging valve mechanism, a filter and a choke arranged in series. The valve mechanism comprises a spring-biased valve slidably mounted in a ported bushing carried by the abutment. Two spaced-apart stops carried on the abutment enable relative movement between the abutment and the valve whereby, in one position of the valve, fluid under pressure may flow from the brake pipe to the control reservoir to effect charging thereof via the ported bushing, a passageway in the valve and the choke, and, in a second position of this valve, this charging communication is closed.

REFERENCES:
patent: 141685 (1873-08-01), Westinghouse, Jr.
patent: 1919423 (1933-07-01), Farmer
patent: 2457578 (1948-12-01), Maliphant
patent: 2992861 (1961-07-01), Hursen
patent: 3639010 (1972-02-01), Mayer

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