HYDRO-PNEUMATIC PRESSURE TRANSFORMATION DEVICE AND METHOD FOR OPERATION
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United States of America Patent
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Issued Date -
Feb 12, 2009
app pub date -
Aug 6, 2008
filing date -
Aug 6, 2007
priority date (Note) -
Abandoned
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Abstract
Proposed is a hydro-pneumatic pressure transformation device with a working piston (3) and a transformer piston (17) for transforming the pressure exerted upon the working piston (3), wherein the transformer piston (17) features a working stroke chamber (19) for the power stroke and a return stroke chamber (15) for the return stroke, and wherein the working stroke chamber (19) can be subjected to an operating pressure for the power stroke. According to the invention, pressurization means are provided for changing over the return stroke chamber (15) between a low pressure that lies at least approximately in the range of atmospheric pressure or at atmospheric pressure and an intermediate pressure that lies between the low pressure and the operating pressure during the course of the power stroke and the return stroke. A method for operating a hydro-pneumatic device is also proposed.
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