Coupling system for use with fluid displacement apparatus
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United States of America Patent
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Apr 6, 2010
Grant Date -
Jul 10, 2008
app pub date -
Jan 5, 2007
filing date -
Jan 5, 2007
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Abstract
A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The second magnetic coupler is configured to magnetically engage the first magnetic coupler and configured to mechanically engage the first magnetic coupler if the couplers disengage magnetically.
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