Laminated iron core and manufacturing method of laminated iron core
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United States of America Patent
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Apr 18, 2023
Grant Date -
May 21, 2020
app pub date -
Jan 21, 2020
filing date -
Mar 27, 2015
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Abstract
A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.
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