Self expanding fastener
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United States of America Patent
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Dec 30, 2014
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N/A
app pub date -
Dec 11, 2012
filing date -
Dec 7, 2009
priority date (Note) -
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Abstract
A method to join a first structure to a second structure comprises aligning a first hole in the first structure with a second hole in the second structure and inserting a fastener into the first hole and the second hole. The fastener comprises a shape memory alloy which was formed into a first shape having a diameter slightly larger than a diameter of the first hole and the second hole when the shape memory alloy was in an austenite state and reduced to a second shape having a diameter less than the diameter of the first hole and the second hole when the shape memory alloy was in a martensite state. The method further comprises heating the fastener above an austenite start transition temperature.
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