Brake pressure control apparatus for a hydraulic automotive vehicle brake system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 28, 1995
Grant Date -
N/A
app pub date -
Feb 16, 1993
filing date -
Apr 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brake pressure control apparatus having a brake pressure master unit, a brake connected to the brake pressure master unit through a pressure line, a pressure-controlled inlet valve which is positioned in the pressure line and through which the brake pressure master unit is connected, in a first switching position, through a restrictor orifice to the brake and which is furnished with a control piston which in one direction is subject to the pressure in the pressure line and in the opposite direction is subject to the action of a spring and of the pressure in a return line which contains an outlet valve which is controllable by a control device, which blocks the return line in its position of rest and which releases the return line in its switching position. The inlet valve is provided with a valve element which interacts with the control piston and which, in the second switching position, blocks the pressure line and releases a valve seat formed by a longitudinal bore of the control piston making the brake pressure slave unit connectible to the return line.
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