Insulated conductor temperature limited heaters
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United States of America Patent
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Jul 17, 2012
Grant Date -
Jul 22, 2004
app pub date -
Oct 24, 2003
filing date -
Oct 24, 2002
priority date (Note) -
In Force
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Abstract
A heater may include an electrical conductor. Applying alternating current to the electrical conductor may resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surround a non-ferromagnetic material. The heater may provide a reduced amount of heat above or near a selected temperature. An electrical insulator may at least partially surround the electrical conductor. A sheath may at least partially surround the electrical insulator.
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