Systems and methods for compressing and/or expanding a gas utilizing a bi-directional piston and hydraulic actuator
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United States of America Patent
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Sep 3, 2013
Grant Date -
Apr 26, 2012
app pub date -
Nov 11, 2011
filing date -
Nov 11, 2011
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Abstract
Systems, methods and devices for optimizing bi-directional piston movement within a device or system used to compress and/or expand a gas, such as air, are described herein. In some embodiments, a compressed air device and/or system can include a first pneumatic cylinder, a second pneumatic cylinder, a hydraulic actuator, and a hydraulic controller. The first pneumatic cylinder has a first working piston disposed therein for reciprocating movement in the first pneumatic cylinder and the hydraulic actuator is coupled to the first working piston. The second pneumatic cylinder has a second working piston disposed therein for reciprocating movement in the second pneumatic cylinder. The hydraulic controller is fluidically coupleable to the hydraulic actuator and is operable in a compression mode and an expansion mode.
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