Motion device using shape memory material and method therefor
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United States of America Patent
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Oct 14, 2003
Grant Date -
N/A
app pub date -
Mar 1, 1999
filing date -
Mar 1, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A motion device (100) includes a shape memory transducer (110) having a preset memory state and logically divided into first and second portions (116, 118). A coupled electrical circuit (130) is operable to selectively energize the first portion (116) to create a force that moves the first portion (116) toward its memory state which moves the second portion (118) in a first direction out of its memory state, and to selectively energize the second portion (118) to create a force that moves the second portion (118) towards its memory state which moves the first portion (116) away from its memory state in a second direction different from the first direction. A feedback system (120) is preferably included to provide for precise motion control.
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