Pressure control valve unit

Details Pressure control valve unit Pressure control valve unit

1979-02-14

1980-10-28

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 40, 303119, B60T 806

Patent

active

042303770

ABSTRACT:
A pressure control valve unit for an anti-locking apparatus in motor vehicle wheel brakes which is actuatable by a control pressure which controls the brake pressure in at least one wheel brake cylinder, the pressure control valve unit having a pressure exchange chamber, which alternatively has brake cylinder pressure and atmospheric pressure, defined by a switching diaphragm and the switching diaphragm comprising the switching member of a relay valve on one side and on the side--like the closing body of a rapid-release valve--is provided the monitor member of a brake cylinder line leading to the outside air so that the pressure control valve unit combines the advantages of relay and switching valves without their disadvantages and the valve unit can be utilized in other fields, which can be accomplished by simple additional switching arrangements and which extend beyond the normal anti-locking protection function.

REFERENCES:
patent: 3743362 (1973-07-01), Neisch

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