ROTARY MOTOR AND ROBOT
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United States of America Patent
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Issued Date -
Jul 28, 2022
app pub date -
Jan 26, 2022
filing date -
Jan 27, 2021
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Abstract
A lower part first main magnet, a lower part first sub-magnet, a lower part second main magnet, and a lower part second sub-magnet of a motor are sequentially repeatedly placed along a circumference of a rotation axis for relative rotation, a magnetization direction of the lower part first main magnet is a lower part first direction, a magnetization direction of the lower part second main magnet is a lower part second direction, magnetization directions of the lower part first sub-magnet and the lower part second sub-magnet are circumferential directions, the lower part first sub-magnet and the lower part second sub-magnet have recessed portions in parts facing a first stator and facing the lower part first main magnet or the lower part second main magnet, and lower part first auxiliary magnet to lower part fourth auxiliary magnet in magnetization directions different from the lower part first direction.
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