Hydrostatic machine
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United States of America Patent
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Apr 12, 1988
Grant Date -
N/A
app pub date -
Mar 10, 1986
filing date -
Mar 15, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An adjustable hydrostatic machine is connected to a pressure line with impressed system pressure. The pressure difference applied at the machine is set at a control valve so that the stroke volume of the machine in idling operation is set to an adjustment belonging to a predetermined load torque. In idling operation the machine is thus operated at large stroke volume with small pressure difference. If it is then necessary to furnish the load torque a switching valve is opened so that at the machine the full pressure difference is immediately applied, the machine can furnish the desired torque and the time loss necessary for setting the machine is eliminated.
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