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Title:
ボルト
Document Type and Number:
Japanese Patent JP5145226
Kind Code:
B2
Abstract:
A bolt has a bolt body including a screw part, a head part formed at an upper end of the screw part, and a flange part formed at a lower end of the head part; and an unconductive ring-shaped resinous member covering a peripheral portion of the flange part. The flange part has a disk-shaped flange body portion; and a seat surface-forming portion having a seat surface which is pressed against a portion where the bolt is to be mounted. The ring-shaped member has an edge part which is located at a position nearer to a lower end of the screw part than the seat surface and outward from the flange body portion and an annular skirt part whose diameter gradually increases to the edge part. The annular skirt part is so formed that it deforms when the bolt is mounted on the portion where the bolt is to be mounted and forms an annular liquid-tight sealing portion for the portion where the bolt is to be mounted.

Inventors:
Rikiya Ishida
Manabu Naoi
Application Number:
JP2008525884A
Publication Date:
February 13, 2013
Filing Date:
July 18, 2007
Export Citation:
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Assignee:
Maila Co., Ltd.
International Classes:
F16J15/10; F16B35/00; F16B43/00; F16J15/06
Domestic Patent References:
JPH10184633A1998-07-14
JPS4813892B11973-05-01
Attorney, Agent or Firm:
Shoichi Mukaiyama



 
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