Fastener and fastening structure

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United States of America Patent

PATENT NO 9995334
SERIAL NO

15282913

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Importance

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Abstract

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To provide a fastener having a high anti-loosening effect. A fastener has a thread structure including an upper portion of the crest and a bottom portion at the groove. The upper portion has a load flank surface inclined from the standard load flank surface toward the fastener seat while the bottom has an undercut on at least one of the groove side lower than the extension of the corresponding flank surface.

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First Claim

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Patent Owner(s)

  • ART SCREW CO., LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsubayashi, Kou Nagoya, JP 7 56

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