Non-explosive releasable coupling device
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United States of America Patent
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-
Sep 9, 2008
Grant Date -
N/A
app pub date -
Oct 25, 2004
filing date -
Oct 23, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device and method for holding or clamping components together, and with the clamping being selectively loosened to permit the components to move through a predetermined distance without being fully released. A bolt has its head end attached to one component and its threaded end attached to the other component. A portion of the bolt's shank is formed with a necked-down portion. An actuator of shape memory alloy material is mounted about the bolt. When energized by heat, the actuator expands and exerts a great force which stretches the bolt, permanently deforming the bolt. This enables limited movement of the components while still restraining them from separating.
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