Lightning protection fastener and mounting method thereof

US8717736B2 · kind B2 · utility

Assignee

• Mitsubishi Aircraft Corporation · US

Inventors

• Yuji Asahara · Ebeye, US
• Hideo Yamakoshi · Tokyo, JP
• Atsuhiro Iyomasa · Tokyo, JP
• Wataru Nishimura · Tokyo, JP
• Takeyasu Tarumi · Tokyo, JP
• Yasunori Watanabe · Nagoya, JP
• Toru Hashigami · Ebeye, US
• Hiroshi Rikukawa · Tokyo, JP
• Hideo Imamura · Tokyo, JP
• Naoki Taniguchi · Ebeye, US

Key dates

• Filing date: Jan 10, 2013
• Grant date: May 6, 2014
• Expiry date: Jan 10, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B5/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A sealant 34 filled into a cap 30A is caused to overflow through both an opening in a first end portion 30a of the cap 30A and a through-hole 40 of the cap 30A when the cap 30A is pressed against a fastener member 25. With regard to the cap 30A, a ratio between inside diameter D1 of the opening on the side of the first end portion 30a and hole diameter D2 of the through-hole 40 in the second end portion 30b is set as follows: 0.10≦D2/D1≦0.27.