Seizure prevention bolt

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9664223
SERIAL NO

14110762

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Importance

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Abstract

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There is provided a seizure prevention bolt capable of preventing seizure caused by oblique insertion as well as seizure caused by invasion of a foreign matter such as a spatter. An incomplete screw portion having an outer diameter d that is larger than an inner diameter D1 of a female screw and smaller than (D+D1)/2 is formed at a front end of a normal screw portion formed in a bolt shaft over one or more pitches, and a vertical groove for cutting out a foreign matter such as a spatter is formed in the incomplete screw portion. D in the above expression is a nominal diameter of the bolt.

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Patent Owner(s)

Patent OwnerAddress
AOYAMA SEISAKUSHO CO LTD1-8 TAKAHASHI OGUCHI-CHO NIWA-GUN AICHI-PREFECTURE 480-0198

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koga, Kazuhiro Niwa-Gun, JP 31 108
Konagaya, Satoshi Niwa-Gun, JP 5 21
Yamada, Kenya Niwa-Gun, JP 5 257

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