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US 5,204,571 AGranted
Miniature electric motor with rubber stator magnet
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYukako Nojima, Shigenori Uda, Hiromi Suyama, Masanori Onda
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Abstract
A miniature electric motor having a stator composed of a strip of rubber magnet having a varying width. The stator strip has; polarized regions of wide width, non-polarized regions of narrow width, and regions which bridge said polarized regions having a continuously varying width. The periphery of the polarized and non-polarized regions of the stator strip contains indents and protrusions to improve the cogging characteristics of the motor.
Claims4
A miniature electric motor having a stator including a strip made of a rubber magnet, said strip comprising:
- at least one wide width part;
- at least one narrow width part;
- at least one polarized region disposed on said at least one wide width part;
- and
- at least one non-polarized region disposed on said at least one narrow width part;
- and
- continuously varying width sections which connect the polarized regions to the non-polarized regions.
4 more elements
Dependencies are inferred from the claim text.