Method and apparatus for inductively heating an electrically conductive workpiece
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United States of America Patent
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Jun 9, 2015
Grant Date -
Mar 26, 2009
app pub date -
Sep 2, 2008
filing date -
Sep 21, 2007
priority date (Note) -
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Abstract
An apparatus for inductively heating an electrically conductive workpiece in the form of a closed ring includes a U-shaped magnet core with two legs, an electrically conducting coil arranged on at least one leg of the core and connectable with an alternating current source, and a magnet yoke spaced from at least one freestanding end of a leg of the core, so that a closed magnetic circuit with at least one air gap is formed, with the height of the air gap chosen such that the workpiece can be moved in a non-contacting manner into the air gap.
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