Telecommunications Wire Having a Channeled Dielectric Insulator and Methods for Manufacturing the Same

• US 20100000753A1
• Filed: 07/01/2009
• Published: 01/07/2010
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: Bison Patent Licensing, LLC
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Juengst, Scott Avery
• Granted Patent: US 8,022,302 B2
• Time in Patent Office: Days
• US Class Current: 174/24
• CPC Class Codes: H01B 11/002 Pair constructions
• CPC Class Codes: H01B 11/02 Cables with twisted pairs or quads
• CPC Class Codes: H01B 11/12 Arrangements for exhibiting specific transmission characteristics
• CPC Class Codes: H01B 7/0233 Cables with a predominant gas dielectric
• CPC Class Codes: H01B 7/0275 comprising one or more extruded layers of insulation

Abstract

The present disclosure relates generally to a telecommunications wire including an electrical conductor and a dielectric insulator surrounding the electrical conductor. The dielectric insulator defines a plurality of channels defining void space containing a material having a low dielectric constant such as air. The channels each run along a length of the electrical conductor. The channels are configured to lower an overall dielectric constant of the dielectric insulator while maintaining desirable mechanical properties such as crush resistance.

Claims

1. A telecommunications wire comprising:

an electrical conductor; and

a dielectric insulator surrounding the electrical conductor, the dielectric insulator defining a plurality of closed channels and a plurality of open channels, the closed channels and the open channels defining void space containing a gaseous material, the closed and the open channels being circumferentially spaced about the electrical conductor, the closed channels and the open channels each running generally along a length of the electrical conductor, and the closed channels defining at least 75 percent of the void space.

2. The telecommunications wire of claim 1, wherein the closed channels define at least 90 percent of the void space.

3. The telecommunications wire of claim 1, wherein the dielectric insulator defines an equal number of the open and closed channels.

4. The telecommunication wire of claim 1, wherein the dielectric insulator defines more of the open channels than the closed channels.

5. The telecommunications wire of claim 1, wherein the open channels are radially aligned with the closed channels.

6. The telecommunications wire of claim 1, wherein the open channels are not radially aligned with the closed channels.

7. The telecommunications wire of claim 1, wherein the dielectric insulator defines at least 16 of the closed channels.

8. The telecommunications wire of claim 1, wherein the dielectric insulator includes an outer circumferential wall defining an outer diameter of the dielectric insulator, an inner circumferential wall spaced radially inwardly from the outer circumferential wall, and a plurality of radial walls that extend between the inner and outer circumferential walls, wherein the closed channels are defined between the inner and outer circumferential walls, and wherein the inner circumferential wall, the outer circumferential wall and the radial walls each have a thickness in the range of 0.001 to 0.0035 inches.

9. The telecommunications wire of claim 8, wherein the dielectric insulator includes a plurality of radial legs that project radially inwardly from the inner circumferential wall and define the open channels thereinbetween.

10. The telecommunications wire of claim 1, wherein the dielectric insulator includes 16 of the closed channels and 18 of the open channels.

11. The telecommunications wire of claim 1, wherein the dielectric insulator defines a percent void area in the range of 5-50 percent.

12. The telecommunications wire of claim 1, wherein the dielectric insulator defines a percent void area in the range of 15-45 percent.

13. The telecommunications wire of claim 1, wherein the dielectric insulator defines a percent void area in the range of 20-35 percent.

14. The telecommunications wire of claim 1, wherein the dielectric insulator defines a percent void area in the range of 15-25 percent.

15. The telecommunications wire of claim 1, wherein the dielectric insulator defines a percent void area in the range of 18-23 percent.

16. The telecommunications wire of claim 1, wherein the dielectric insulator has a minimum material thickness less than 0.007 inches.

17. The telecommunications wire of claim 1, wherein the dielectric insulator has a minimum material thickness in the range of 0.002-0.007 inches.

18. The telecommunications wire of claim 1, wherein the dielectric insulator has a maximum material thickness in the range of 1.5-6 times as thick as a minimum material thickness of the dielectric insulator.

19. The telecommunications wire of claim 1, wherein the dielectric insulator has a maximum material thickness in the range of 1.5-3.0 times as thick as a minimum material thickness of the dielectric insulator.

20. A telecommunications wire comprising:

an electrical conductor; and

a dielectric insulator surrounding the electrical conductor, the dielectric insulator defining a plurality of closed channels and a plurality of open channels, the closed channels and the open channels defining void space containing a gaseous material, the closed and the open channels being circumferentially spaced about the electrical conductor, the closed channels and the open channels each running generally along a length of the electrical conductor, and at least one of the closed channels defining a transverse cross-sectional area that is at least two times larger than a transverse cross-sectional area defined by at least one of the open channels.

21. The telecommunications wire of claim 20, wherein the closed channels have a uniform size and the open channels have a uniform size, and wherein the transverse cross-sectional area defined by each of the closed channels is at least five times larger than the transverse cross-sectional area defined by each of the open channels.

22. The telecommunications wire of claim 20, wherein the closed channels have a uniform size and the open channels have a uniform size, and wherein the transverse cross-sectional area defined by each of the closed channels is at least ten times larger than the transverse cross-sectional area defined by each of the open channels.

23. A telecommunications wire comprising:

an electrical conductor; and

a dielectric insulator surrounding the electrical conductor, the dielectric insulator including an outer circumferential wall defining an outer diameter of the dielectric insulator, an inner circumferential wall spaced radially inwardly from the outer circumferential wall, and a plurality of radial walls that extend between the inner and outer circumferential walls, the dielectric insulator also defining more than 12 closed channels between the inner and outer circumferential walls, the outer diameter of the dielectric insulator being less than 0.05 inches;

the dielectric insulator defining a percentage void area in the range of 15-25 percent;

the inner circumferential wall, the outer circumferential wall and the radial walls each having a thickness in the range of 0.001 to 0.0035 inches;

the dielectric insulator having a minimum material thickness in the range of 0.002-0.007 inches; and

the dielectric insulator has a maximum material thickness in the range of 1.5-3.0 times as thick as the minimum material thickness of the dielectric insulator.

24. The telecommunications wire of claim 23, wherein the dielectric insulator defines 13-16 of the channels between the inner and outer circumferential walls.

25. The telecommunications wire of claim 23, wherein the dielectric insulator defines a percentage void area in the range of 18-23 percent.

26. The telecommunications wire of claim 23, wherein the dielectric insulator also defines open channels having open sides that face toward the electrical conductor, and wherein the closed cells define at least 75 percent of the void area of the dielectric insulator.

27. The telecommunications wire of claim 23, wherein the outer circumferential wall and the radial walls each have a thickness in the range of 0.0025-0.0035 inches, and wherein the dielectric insulator has a minimum material thickness in the range of 0.005-0.007 inches.