Hydraulic circuit supply system
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United States of America Patent
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Mar 21, 2017
Grant Date -
Oct 1, 2015
app pub date -
Jan 21, 2014
filing date -
Mar 10, 2009
priority date (Note) -
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Abstract
The invention relates to an system for supplying a hydraulic circuit with hydraulic fluid. The system includes a working reservoir and an auxiliary reservoir connected to the working reservoir by a hydraulic line. An air pump has an inlet connected to a suction line that opens into a liquid-free portion of the auxiliary reservoir so that a negative pressure can be built up in the auxiliary reservoir relative to the atmospheric ambient pressure. The air pump inlet is also connected to a control line, which comprises a control opening which is covered by the hydraulic fluid in the working reservoir, at least before the air pump is started up.
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