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US 4,939,317 AGranted
Polyimide insulated coaxial electric cable
AssigneeW. L. Gore & Associates, Inc.
InventorJohn C. Hostler
Life of this patent
Estimating the term…
Abstract
A high temperature and radiation resistant all polyimide insulated coaxial cable and process of manufacture. Perforated polyimide tape wrapping yields low dielectric constant cable.
Claims10
A coaxial electrical cable comprising in order:
- (a) a conductive metal center conductor surrounded by;
- (b) a first layer of a polyimide adhesive-coated perforated polyimide insulative tape surrounding said conductor;
- (c) a second layer of polyimide adhesive-coated solid polyimide insulative binding tape surrounding said first layer;
- (d) a conductive shield surrounding said second layer;
- and
- (e) a polyimide outer coating surrounding said shield.
3 more elements
A process for manufacturing a polyimide coaxial cable comprising the steps of:
- (a) wrapping a conductive metal center conductor with a polyamide-acid adhesive coated perforated polyimide tape;
- (b) wrapping the tape wrapped conductive of (a) with a polyamide-acid adhesive coated polyimide binding tape;
- (c) enclosing the bound wrapped conductor with a conductive shield;
- (d) applying a polyamide-acid adhesive containing outer coating to the shielded bound wrapped conductor;
- and
- (e) heating the polyamide-acid adhesive coating above 50.degree. C. for a time sufficient to convert them to the insoluable polyimide.
3 more elements
A coaxial electric cable comprising in order:
- (a) a conductive metal center conductor surrounded by;
- (b) a first layer of polyamide-acid adhesive coated perforated polyimide insulative tape surrounding said conductor;
- (c) a second layer of polyamide-acid adhesive coated solid polyimide insulative binding tape surrounding said first layer;
- (d) a conductive shielding surrounding said second layer;
- and
- (e) a polyamide-acid containing polyimide outer coating surrounding said shield.
3 more elements
Dependencies are inferred from the claim text.