Pressure-regulating device for a hydraulic circuit
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United States of America Patent
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-
Oct 25, 1994
Issued Date -
N/A
app pub date -
Mar 28, 1994
filing date -
Jul 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a pressure-regulating device for a hydraulic circuit, especially for a brake circuit of a motor vehicle, comprising at least one source of fluid under pressure (10) connected to a reservoir of fluid under low pressure (16) and, in at least one subcircuit (I, II), a second source of fluid under pressure (50) and two pressure receivers (20, 22). According to the invention, a proportional solenoid valve (24, 26) is associated with each pressure receiver (20, 22) and is connected to the source of fluid under pressure (10) and to the second source of fluid under pressure (50), and a differential pressure/vacuum valve (100) closes, at rest, communication between the source of fluid under pressure (10) and the supply of the second source of fluid under pressure (50), this communication being opened when the second source of fluid under pressure is put into operation.
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