Variable pitch resistance coil heater
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United States of America Patent
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Sep 7, 2021
Grant Date -
Jun 27, 2019
app pub date -
Mar 5, 2019
filing date -
May 25, 2012
priority date (Note) -
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Abstract
A heater includes a first conducting pin, a second conducting pin, and a plurality of resistance coils. Each resistance coil includes a first end connected to the first conducting pin and a second end connected to the second conducting pin. At least one resistance coil among the plurality of resistance coils has a continuously variable pitch. In one form, the plurality of resistance coils are connected in a parallel circuit with the first and second conducting pin. A first resistance coil among the plurality of resistance coils may have a diameter that is different than a second resistance coil among the plurality of resistance coils.
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