Shaft for steering device, method of manufacturing shaft for steering device, and electric power steering device

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United States of America Patent

PATENT NO 11383757
SERIAL NO

16609774

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A shaft for a steering device has a first portion, a second portion, and a third portion that is a shaft integrated with the first portion and the second portion and couples the first portion and the second portion in a first direction. The outer diameter of the third portion is smaller than the length of the second portion in a second direction intersecting with the first direction, and is constant across a direction extending along the first direction. The hardness of the third portion is greater than the hardness of the second portion, and is constant across the direction extending along the first direction.

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First Claim

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Patent Owner(s)

  • NSK LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Suehiro, Tatsuya Gunma, JP 3 4
Yamada, Kazuya Gunma, JP 74 399
Yasuda, Kaname Gunma, JP 14 56

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