Modification of a deep-drawing sheet blank for electric resistance heating
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United States of America Patent
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Feb 20, 2024
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N/A
app pub date -
Mar 9, 2021
filing date -
Oct 30, 2020
priority date (Note) -
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Abstract
The present invention generally relates to the modification of a deep-drawing sheet blank (P) for electric resistance heating. Generally, the modified sheet blank comprises slits (Z) being made in the edges of the blank (P) transversely to the electric current flow and oriented towards the perimeter of the forming zone (T). The distances between the ends of the slits (Z) and the forming zone (T) perimeter may be equal. The ends of the slits (Z) oriented towards the forming zone perimeter (T) may also be rounded.
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