Bolt

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United States of America Patent

PATENT NO 10837484
APP PUB NO 20180355904A1
SERIAL NO

16005858

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A bolt includes a head portion and a shaft portion. The shaft portion includes an ordinary screw portion that meshes with a nut, and a guide screw portion that is provided on a distal end side of the ordinary screw portion and has a screw thread having a diameter smaller than that of a screw thread of the ordinary screw portion. A protective portion having a diameter larger than a minor diameter of the ordinary screw portion is formed continuously from the guide screw portion at a distal end of the guide screw portion. A pressure flank surface is formed at a distal end of the screw thread of the guide screw portion, but a clearance flank surface is not formed thereat.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
IWATA BOLT CO LTDTOKYO JAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kageyama, Masanao Tokyo, JP 2 1

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