Machine spring displacer for Stirling cycle machines
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United States of America Patent
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Mar 28, 2006
Grant Date -
Mar 24, 2005
app pub date -
Sep 19, 2003
filing date -
Sep 19, 2003
priority date (Note) -
Expired
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Abstract
A displacer spring and displacer/spring assembly for use in an FPSE and with improved wear characteristics. One embodiment calls for the use of a single machined spring operating alternately in a tension mode and a compression mode and wherein the operating frequency of displacer movement can be controlled therewith to a desired resonant frequency. The machined spring of the present invention provides enhanced structural accuracy which, in turn, leads to the elimination of lateral and side loads as compared to prior art wire-wound helical springs.
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