Variable volume reservoir and method for its use
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United States of America Patent
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Jul 21, 1992
Issued Date -
N/A
app pub date -
Mar 4, 1991
filing date -
Jul 9, 1987
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A pressurized fluid reservoir having a variable working volume includes a cylinder body having a fixed storage volume and a first inlet and exhaust structure for allowing a compressible fluid to enter and leave the cylinder. A second inlet and exhaust structure is also provided for allowing a substantially incompressible fluid to enter and leave the cylinder. A first charge mechanism pumps the compressible fluid into the cylinder. A second charge mechanism pumps the substantially incompressible fluid into the cylinder to reduce the cylinder fixed storage volume to a desired working volume into which the compressible fluid can be pumped by the first charge mechanism.
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