Stud Fastener and Stabilising Device
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United States of America Patent
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app pub date -
Nov 3, 2010
filing date -
Apr 4, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a stabilizing device (120) for an assembly which includes two shape memory alloy wires (104, 106) adapted to operate in conjunction. The stabilizing device (120) includes a rocker plate (108) for attachment to each of the shape memory alloy wires; the rocker plate (108) is adapted to pivot when one shape memory alloy wire (104 or 106) is subjected to a stress greater than that to which the other shape memory alloy wire (106 or 104) is subjected, in order to reduce the stress on the first mentioned shape memory alloy wire. The invention further relates to a fastener (60) including a stud (54) having a locking cavity (56), an aperture (58) adapted to receive the stud (54), a locking means (teeth) (620) adapted to engage the locking cavity (56), a shuttle (66) rotatable by rotating means including material adapted to contract when activated and a plug (87) slidable within the shuttle (66) to close off the aperture (58) when not occupied by the stud (54). The shuttle (66) is rotatable by the rotating means between a locking position, in which the locking means (teeth) (62) engages the locking cavity (56), and an unlocking position in which the locking means (teeth) (62) does not engage the locking cavity (56). The plug (87) can help prevent contamination of the fastener (60).
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