Fastening member

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11286972
APP PUB NO 20200072272A1
SERIAL NO

16495466

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A fastening member includes a screw thread formed therein. A portion including a crest portion of the screw thread is formed of a first alloy material and includes: a thick portion where the portion is maximized in thickness in a circumferential direction; and a thin portion where the portion is minimized in thickness in the circumferential direction. A portion including a root of the screw thread is formed of a second alloy material having a tensile strength higher than that of the first alloy material.

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First Claim

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Patent Owner(s)

  • NHK SPRING CO. LTD

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kaneda, Noriyoshi Kanagawa, JP 7 19
Suzuki, Takeshi Kanagawa, JP 563 6238

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Maintenance Fees

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