Actuator and method for producing mechanical motion
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United States of America Patent
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Aug 24, 2010
Grant Date -
Jul 2, 2009
app pub date -
Dec 27, 2007
filing date -
Dec 27, 2007
priority date (Note) -
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Abstract
A system for producing mechanical motion is provided. The system includes an actuator having a first end, a second end, and a radially expandable bladder assembly extending therebetween, and a source of pressurized fluid external to said actuator. The bladder assembly further includes an inner cavity. In addition, a substantially fixed-volume reservoir positioned within the cavity is provided, wherein the bladder assembly is configured to expand in a radial direction and contract in an axial direction when a volume of fluid is introduced from the reservoir into the inner cavity.
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