Conductive sleeved fastener assembly
AssigneeThe Boeing Company
InventorsRussell J. HEETER, Thu A. NGUYEN, John A. WARD, John R. PORTER, Jeffrey A. Wilkerson
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Abstract
A conductive fastener assembly, system, and method, wherein the fastener assembly includes a fastener, a fastener sleeve, a nut, and a lubricant coating. The lubricant coating is deposited on a distal portion of a fastener shank and is omitted from the rest of the fastener. To overcome the stresses placed on the fastener sleeve by the insertion of the fastener shank largely devoid of a lubricant coating, the fastener sleeve is reinforced by one or more of an increased thickness, a high-strength alloy, and a soft metal coating.
Claims20
A method of preparing a conductive sleeved fastening assembly for use, comprising:
- providing a fastener having a fastener head, a fastener shank extending from said fastener head, and a fastener sleeve provided on said fastener shank and a fastener sleeve flare on said fastener sleeve;
- and
- depositing a lubricant coating on a distal portion of the fastener shank, wherein the lubricant coating is omitted from a proximal portion of the fastener shank and from the fastener head.
A method of preparing a conductive sleeved fastening assembly for use, comprising:
- providing a first structure, having an expanded metal foil arranged thereon;
- providing a second structure;
- providing a fastener, configured to attach the first structure to the second structure, having a fastener head and a fastener shank extending from said fastener head, and a fastener sleeve provided on said fastener shank and a fastener sleeve flare on said fastener sleeve;
- and
- depositing a lubricant coating on a distal portion of the fastener shank, wherein the lubricant coating is omitted from a proximal portion of the fastener shank and from the fastener head.
A method of preparing a conductive sleeved fastening assembly, comprising:
- providing a first structure;
- arranging an expanded metal foil on the first structure;
- providing a second structure;
- attaching the first structure to the second structure with an electrically conductive fastener having a fastener head, a fastener shank extending from said fastener head, and a fastener sleeve being configured to receive said fastener shank;
- attaching a nut to a distal portion of the fastener shank;
- and
- depositing a lubricant coating on a distal portion of the fastener shank, wherein the lubricant coating is omitted from a proximal portion of the fastener shank and from the fastener head.
Dependencies are inferred from the claim text.