Conductive sleeved fastener assembly
First Claim
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1. 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, wherein said fastener sleeve is configured to extend through a first structure and a second structure;
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; and
applying a fay seal between the first structure and the second structure, wherein the fay seal is omitted from a horizontal area between the first structure and the second structure surrounding the fastener sleeve.
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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.
44 Citations
17 Claims
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1. A method of preparing a conductive sleeved fastening assembly for use, comprising:
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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, wherein said fastener sleeve is configured to extend through a first structure and a second structure; 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; and applying a fay seal between the first structure and the second structure, wherein the fay seal is omitted from a horizontal area between the first structure and the second structure surrounding the fastener sleeve. - View Dependent Claims (2, 3, 4)
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5. A method of preparing a conductive sleeved fastening assembly for use, comprising:
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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;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; and applying a fay seal between the first structure and the second structure, wherein the fay seal is omitted from a horizontal area between the first structure and the second structure surrounding the fastener sleeve. - View Dependent Claims (6, 7, 8, 9)
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10. A method of preparing a conductive sleeved fastening assembly, comprising:
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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;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; and applying a fay seal between the first structure and the second structure, wherein the fay seal is omitted from a horizontal area between the first structure and the second structure surrounding the fastener sleeve. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification