Hydraulic control circuit for a priority and for a secondary hydraulic consumer
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United States of America Patent
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Sep 18, 2001
Grant Date -
N/A
app pub date -
Jul 27, 1999
filing date -
Feb 4, 1997
priority date (Note) -
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Abstract
The invention concerns a hydraulic control circuit in which the pressure medium conveyed by a hydraulic pump of variable delivery (10) is fed, in each case via a metering aperture (17, 31), as a priority to a first hydraulic consumer (14) and only secondly to a second hydraulic consumer (15). A priority control system is now produced without additional delivery losses and with sufficient amounts of pressure medium being conveyed in that the valve member (48) of the priority valve (45) can be acted upon in the closure direction of the connection between the first connection (46) and the second connection (47) by a pressure prevailing in a line section (13) upstream of the first metering aperture (17).
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