Coated fastener and coating method and apparatus therefor
AssigneeThe Boeing Company
InventorsSeth Yakel, Kwok Tung Chan
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Abstract
A coated fastener includes a core body comprising conductive material and including a first portion and a second portion. The coated fastener also includes a first coating comprising dielectric material and disposed on the first portion of the core body. The coated fastener further includes a second coating comprising a conductive friction modifier material and disposed on the second portion of the core body to provide the fastener with a desired transition hold fit, improved lubricity, and improved electromagnetic effects protection.
Claims20
A coated fastener comprising:
- a core body comprising conductive material and including a first portion and a second portion;
- a first coating comprising dielectric material and disposed on the first portion of the core body;
- and
- a second coating comprising a conductive friction modifier material and disposed on the second portion of the core body to provide the fastener with a desired transition hold fit, improved lubricity, and improved electromagnetic effects protection.
A coating method for a fastener having a longitudinal central axis and a non-threaded portion, the coating method comprising:
- rotating the fastener about its longitudinal central axis;
- and
- applying a conductive friction modifier material onto the non-threaded portion of the fastener as the fastener is rotating about its longitudinal central axis.
A coating apparatus for a fastener having a longitudinal central axis and a non-threaded portion, the coating apparatus comprising:
- a first device for securing the fastener in place to be coated;
- a second device for rotating the fastener about its longitudinal central axis;
- and
- a third device for applying a conductive friction modifier material on the non-threaded portion of the fastener when the fastener is secured in place to be coated and is rotated about its longitudinal central axis as the conductive friction modifier material is being applied on the non-threaded portion of the fastener.
Dependencies are inferred from the claim text.