Magnetic encoder and bearing device including magnetic encoder

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9476735
APP PUB NO 20150117806A1
SERIAL NO

14499874

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A magnetic encoder 1 including a support member 2 attached to a rotating body 12 and a magnet member 3 fixed to the support member 2, the support member 2 and the magnet 4 are not attached to each other using an adhesive but the support member 2 and the plastic magnet 4 are joined together by molding shrinkage or wrap-around form of the magnet 4, and the material for the magnet 4 is selected such that the value of the ratio ((αp−αm)/εc) of a difference (αp−αm) between flowing-direction linear expansion coefficient (αp) of the magnet 4 and linear expansion coefficient (αm) of the support member 2, to tensile breaking strain (εc) of the material for the magnet 4 is equal to or less than a value beginning at a threshold (Nth) based on a prescribed value of cycle member at thermal shock destructive test.

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Patent Owner(s)

Patent OwnerAddress
NAKANISHI METAL WORKS CO LTD3-3-5 TENMABASHI KITA-KU OSAKA-SHI OSAKA 530-8566

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Yoshihiro Osaka, JP 238 6597

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