Movement mechanism for a ground fault circuit interrupter with automatic pressure balance compensation
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United States of America Patent
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Apr 7, 2009
Grant Date -
Sep 20, 2007
app pub date -
Oct 26, 2006
filing date -
Mar 6, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A magnetic movement mechanism usable in a ground fault circuit interrupter, comprising: (i) a first permanent magnet, (ii) a second permanent magnet positioned apart from the first permanent magnet, (iii) a soft magnet positioned between the two permanent magnets, (iv) a balance frame positioned between the two ends of the soft magnet, (v) a first coil and (vi) a second coil, wherein the first coil and the second coil are arranged such that when a current passes through the first coil, a first magnetic force is generated to cause the soft magnet and the balance frame to move towards the first permanent magnet in a first direction, and when a current passes through the second coil, a second magnetic force is generated to cause the soft magnet and the balance frame to move towards the second permanent magnet in a second direction that is opposite to the first direction.
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