Latching micro-magnetic switch with improved thermal reliability
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United States of America Patent
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Sep 2, 2008
Grant Date -
Jun 1, 2006
app pub date -
Jun 14, 2005
filing date -
Mar 18, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A micro-magnetic switch includes a permanent magnet and a supporting device having contacts coupled thereto and an embedded coil. The supporting device can be positioned proximate to the magnet. The switch also includes a cantilever coupled at a central point to the supporting device. The cantilever has a conducting material coupled proximate an end and on a side of the cantilever facing the supporting device and having a soft magnetic material coupled thereto. During thermal cycling the cantilever can freely expand based on being coupled at a central point to the supporting device, which substantially reduces coefficient of thermal expansion differences between the cantilever and the supporting device.
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