Polymer spring
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United States of America Patent
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Oct 25, 2016
Grant Date -
Aug 7, 2014
app pub date -
Nov 15, 2013
filing date -
Oct 23, 2009
priority date (Note) -
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Abstract
A polymer spring has a hollow tubular polymer body, wherein the first end portion of the body, the second end portion of the body, and the mid-portion of the body together substantially maintain an annular cylindrical column structure throughout the length of the body from the first end portion of the body to the second end portion of the body, such that the mid-portion of the body has a substantial portion that is in direct alignment with the first end portion of the body and the second end portion of the body when the spring is compressed to eliminate or reduce the chances of the spring failing caused by the spring folding or buckling and to reduce material fatigue in the polymer spring associated with folding or buckling.
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