Fastening method and cylinder device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9394934
APP PUB NO 20130104732A1
SERIAL NO

13625568

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Abstract

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A fastening method for fastening a nut to a bolt by screwing includes preparing a nut including a tool mounting portion formed on a seat surface, and an annular thin portion formed on the tool mounting portion opposite to the seat surface, swaging a plurality of places of the thin portion with punches from an outer circumferential direction, and flowing a thickness of the thin portion so as to extend to a front end of the bolt partially in a circumferential direction to be closely adhered to a screw portion of the bolt.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTDHITACHINAKA-SHI IBARAKI 312-8503

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishimura, Makoto Tokyo, JP 120 1759
Ohno, Takayuki Yokohama, JP 29 314

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