Non-explosive releasable coupling device

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Temperature sensitive or responsive

Reexamination Certificate

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Details

C411SDIG001, C411S392000

Reexamination Certificate

active

07422403

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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