Fastener systems that provide EME protection

Patent metadata

Field	Value
Publication number	US-9802715-B2
Application number	US-201213434835-A
Country	US
Kind code	B2
Filing date	Mar 29, 2012
Priority date	Mar 29, 2012
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

Fasteners are inserted into a stack of members and terminated with parts having at least one of a dry dielectric coating and a dry dielectric seal at select locations to protect against electromagnetic effects (EME).

First claim

The invention claimed is:

1. A part for terminating a fastener, the part comprising:
a fastener termination body including a washer having a central opening; and
a dry dielectric coating on the fastener termination body, and a first dielectric seal partially covering the central opening at one of a distal and proximal location, the first dielectric seal secured to the fastener termination body, the dry dielectric coating and the first dielectric seal having a thickness and composition for inhibiting lightning current.

2. A part for terminating a fastener, the part comprising:
a fastener termination body including a washer having a central opening; and
a dry dielectric coating on the fastener termination body, and a first dielectric seal partially covering the central opening at an inner proximal location of the washer, the first dielectric seal secured to the fastener termination body, the dry dielectric coating and the first dielectric seal having a thickness and composition for inhibiting lightning current.

3. A part for terminating a fastener, the part comprising:
a fastener termination body including a washer having a central opening;
a dry dielectric coating on the fastener termination body, and a first dielectric seal partially covering the central opening at an inner proximal location of the washer, the first dielectric seal secured to the fastener termination body, the dry dielectric coating and the first dielectric seal having a thickness and composition for inhibiting lightning current; and
a second dielectric seal at a distal location, the first and second dielectric seals separated by a gap.

4. A part for terminating a fastener, the part comprising:
a fastener termination body including a washer having a central opening; and
a dry dielectric coating on an exterior surface of the washer, and a first dielectric seal partially covering the central opening at one of a distal and proximal location, the first dielectric seal secured to the fastener termination body, the dry dielectric coating and the first dielectric seal having a thickness and composition for inhibiting lightning current.

Assignees

• Whitlock Richard P
• Rogers Randall A
• Coronado Peter A
• Morden Sean D
• Boeing Co

Inventors

• Whitlock Richard P
• Rogers Randall A
• Coronado Peter A
• Morden Sean D

Classifications

• B21J15/147

  Composite articles · CPC title

• B21J15/142

  Aerospace structures · CPC title

• Y10T29/49947

  by applying separate fastener · CPC title

• B64D45/02 Primary

  Lightning protectors; Static dischargers · CPC title

• F16B33/004

  Sealing; Insulation (by means of washers F16B43/001) · CPC title