Shape memory alloy actuators
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United States of America Patent
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Dec 21, 2004
Grant Date -
Oct 14, 2004
app pub date -
Apr 9, 2003
filing date -
Apr 9, 2003
priority date (Note) -
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Abstract
An electrically insulative layer of a shape memory alloy (SMA) actuator includes an inorganic material formed upon a portion of an SMA substrate. A conductive material formed upon a portion of the electrically insulative layer in a trace pattern includes a first end, a second end, and a heating element disposed between the first and second ends. The SMA substrate is trained to deform at a transition temperature achieved when electricity is conducted through the conductive material via first and second interconnect pads terminating the first and second ends of the trace pattern.
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