Nut, washer and fastener head for electromagnetic effect protection

US9291187B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• Richard P. Whitlock · Seattle, US
• Peter A. Coronado · Renton, US
• Sean D. Morden · Federal Way, US
• Julie M. Drexler · Brier, US
• Randall A. Rogers · Auburn, US
• Mark A. Woods · Renton, US
• Thomas J. Lowe · Lakewood, US

Key dates

• Filing date: May 20, 2013
• Grant date: Mar 22, 2016
• Expiry date: Jan 1, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49948
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A fastener system for composite structure providing electromagnetic energy (EME) protection incorporates a fastener having a head with an engagement surface and a shank having a threaded end. A nut is received on the threaded end of the fastener, with the nut also having an engagement surface. At least one of the head engagement surface and the nut engagement surface incorporates a reduced area portion for engagement of a first mating surface or second mating surface, respectively.