Fluoropolymer fiber reinforced integral composite cable jacket and tubing

• US 5,764,835 A
• Filed: 11/26/1996
• Issued: 06/09/1998
• Est. Priority Date: 05/07/1996
• Status: Expired due to Term

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Irwin, Craig W., Farnsworth, Ted R., Rubin, Edward A.
• Primary Examiner(s): Ullah, Akm E.
• Application Number:
  US08/756,715
• Time in Patent Office: 560 Days
• Field of Search: 385/100-105, 385/147
• US Class Current: 385/104
• CPC Class Codes: G02B 6/4415 Cables for special applications G02B6/4429, G02B6/4439, G02B6/4479 take precedence
• CPC Class Codes: G02B 6/443 Protective covering
• CPC Class Codes: H01B 3/445 from vinylfluorides or other fluoroethylenic compounds
• CPC Class Codes: H01B 3/46 silicones
• CPC Class Codes: H01B 7/2813 Protection against damage caused by electrical, chemical or water tree deterioration
• CPC Class Codes: H01B 7/282 Preventing penetration of fluid , e.g. water or humidity, into conductor or cable
• CPC Class Codes: H01B 7/292 using material resistant to heat

Abstract

An improved integral composite cable jacket or tubing is disclosed wherein a fluoropolymer fiber array is disposed between a first and second elastomer jacket layer. At least one of the elastomer jacket layers is comprised of silicone. The first and second elastomer jacket layers are bonded together through predetermined open spaces defined by the fiber array.

Claims

1. In combination with a signal cable assembly having a signal transmission core with a longitudinal center axis, an improved composite cable jacket comprising:

a first elastomer jacket layer disposed about the signal transmission core;

a fiber array disposed about the first elastomer jacket layer, wherein the fiber array is defined by at least two fluoropolymer fibers, and wherein the fiber array defines predetermined open regions; and

a second elastomer jacket layer disposed about the fiber array, wherein the first elastomer jacket layer is bonded to the second elastomer jacket layer at the predetermined open regions to form a substantially homogeneous structure having said fiber array disposed therein.

2. The invention of claim 1, wherein at least one of the first and second elastomer jacket layers is comprised of silicone.

3. The invention of claim 1, wherein both of the first and second elastomer jacket layers are comprised of silicone.

4. The invention of claim 1, wherein the at least two fluoropolymer fibers are comprised of polytetrafluoroethylene.

5. The invention of claim 4, wherein the polytetrafluoroethylene is defined by a microstructure of nodes and fibrils.

6. The invention of claim 1, wherein the fiber array is arranged in a braided configuration.

7. The invention of claim 1, wherein the fiber array is arranged in a served configuration.

8. The invention of claim 1, wherein fiber is arranged in an axial configuration parallel to each other.

9. The invention of claim 1, wherein the first and second elastomer jacket layers define a composite cable jacket having an inside and an outside surface, and wherein the fiber array is disposed within said composite cable jacket in a location no closer than 0.001 inches from each of the inside and the outside surfaces.

10. An improved composite tubing comprising:

a first tubular shaped elastomer material;

a fiber array disposed about said first tubular shaped elastomer material, wherein the fiber array is defined by at least two fluoropolymer fibers, and wherein the fiber array defines predetermined open regions; and

a second tubular shaped material elastomer disposed about the fiber array, wherein the first and second tubular shaped elastomer materials are bonded together at the predetermined open regions to form a substantially homogeneous structure having said fiber array disposed therein.

11. The invention of claim 10, wherein at least one of the first and second tubular shaped elastomer materials is comprised of silicone.

12. The invention of claim 10, wherein both of the first and second tubular shaped elastomer materials are comprised of silicone.

13. The invention of claim 10, wherein the at least two fluoropolymer fibers are comprised of polytetrafluoroethylene.

14. The invention of claim 13, wherein the polytetrafluoroethylene is defined by a microstructure of nodes and fibrils.

15. The invention of claim 10, wherein the fiber array is arranged in a braided configuration.

16. The invention of claim 10, wherein the fiber array is arranged in a served configuration.

17. The invention of claim 10, wherein the fiber array is arranged in an axial configuration parallel to each other.

18. The invention of claim 10, wherein the first and second jackets define an integral composite tube having an inside and an outside surface, and wherein the fiber array is disposed within said tube in a location no closer than 0.001 inches from each of the inside and the outside surfaces.