Magnetic core with multiple teeth having four different teeth tips axially overlapping
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United States of America Patent
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Nov 12, 2019
Grant Date -
Dec 1, 2016
app pub date -
May 27, 2016
filing date -
May 27, 2015
priority date (Note) -
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Abstract
A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.
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