Bearing support system for free-piston stirling machines
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United States of America Patent
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Dec 31, 2013
Grant Date -
Mar 10, 2011
app pub date -
Aug 31, 2010
filing date -
Sep 10, 2009
priority date (Note) -
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Abstract
A bearing support system for a piston and its connecting rod in which the bearing system supports the combined piston and connecting rod by only two bearings, a gas bearing at the piston and a radially acting spring bearing at its connecting rod. A non-compliant connecting rod is fixed to an end of a piston which has a clearance seal length in the range of 0.3 times the diameter of the piston and 1.5 times the diameter of the piston. The distance from the gas bearing to the effective point of connection of the radially acting spring bearing to the connecting rod is greater than the seal length of the piston. The piston and connecting rod unit is not supported by additional bearings that introduce additional alignment problems.
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