Invention Grant
- Patent Title: Methods for diverting lightning current from skin fasteners in composite, non-metallic structures
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Application No.: US14875297Application Date: 2015-10-05
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Publication No.: US09912137B2Publication Date: 2018-03-06
- Inventor: Quynhgiao Le , Jeffrey Denys Morgan , Robert B. Greegor , Brent A. Whiting
- Applicant: The Boeing Company
- Applicant Address: US IL Chicago
- Assignee: The Boeing Company
- Current Assignee: The Boeing Company
- Current Assignee Address: US IL Chicago
- Agent Felix L. Fischer
- Main IPC: B64D45/02
- IPC: B64D45/02 ; F16B37/14 ; B64C1/12 ; B64D37/32 ; H02G13/00 ; B29C70/54 ; B29C70/88

Abstract:
A multilayer composite structure with integrated fastener-to-conductive layer surface lightning protection interconnection employs a conductive layer with an inner surface and a plurality of chamfered recesses forming countersinks in an outer surface. A carbon-fiber reinforced plastic (CFRP) composite layer is disposed on the inner surface of the conductive layer and conforms to the surface shape. A plurality of holes extend through the plurality of chamfered recesses in the conductive layer and the adjoining CFRP composite layer in a manner such that the conductive layer defines a countersink portion extending into the openings of the plurality of holes. The chamfered recesses in the conductive layer provides an electrically conductive surface area that contacts conductive countersunk fasteners installed within the plurality of holes to enable current sharing between groups of neighboring fasteners.
Public/Granted literature
- US20170098930A1 METHODS FOR DIVERTING LIGHTNING CURRENT FROM SKIN FASTENERS IN COMPOSITE, NON-METALLIC STRUCTURES Public/Granted day:2017-04-06
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