Connector for corrugated coaxial cable and method

• US 7,156,696 B1
• Filed: 07/19/2006
• Issued: 01/02/2007
• Est. Priority Date: 07/19/2006
• Status: Expired due to Fees

• Current Assignee: John Mezzalingua Associates Incorporated
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Montena, Noah P.
• Primary Examiner(s): Paumen; Gary F.
• Application Number:
  US11/458,475
• Time in Patent Office: 167 Days
• Field of Search: 439/584, 439/578, 439/583, 439/585, 439/587, 174/59, 174/655
• US Class Current: 439/584
• CPC Class Codes: H01R 13/5205 Sealing means between cable and housing, e.g. grommet H01R13/5221 takes precedence
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/564 Corrugated cables
• CPC Class Codes: H01R 9/05 for coaxial cables

Abstract

An electrical connector is mounted on a corrugated coaxial cable. An electrical connection with the outer conductor of the cable is formed by compressing an elastomer body surrounding the end of the cable and flowing the body inwardly against the cable to hold a conductive member in electrical connection with the outer conductor.

Claims

1. A connector for mounting on the end of a coaxial cable having a corrugated outer conductor, the connector comprising:

a conductive body having an interior wall surrounding a cable-receiving cavity, the cavity opening at one end of the body;

an elastomer member in the cavity;

a conductive member in the cavity positioned between the elastomer member and an outer conductor of a corrugated coaxial cable in the cavity and between the elastomer member and the body, said elastomer member in direct contact with the conductive member, and said conductive member in direct contact with both the corrugated outer conductor of the coaxial cable and in direct contact with the body, wherein compression of the elastomer member holds the conductive member against both the corrugated outer conductor of the coaxial cable and the body to form an electrical connection therebetween.

2. The connector as in claim 1 including a chamber in the interior wall of the body, said elastomer member located in said chamber.

3. The connector as in claim 2 wherein the chamber extends around the cavity and the elastomer member is tubular.

4. The connector as in claim 3 wherein said body includes two relatively moveable body members defining opposed walls of said chamber, wherein movement of said body members toward each other compresses the elastomer member.

5. The connector as in claim 4 including a friction connection between said body members.

6. The connector as in claim 3 wherein the conductive member includes a circumferential flange contacting said body.

7. The connector as in claim 1 wherein when said elastomer member is compressed the elastomer member and said conductive member conform to peaks and valleys on the outer conductor.

8. The connector as in claim 1 wherein said elastomer member is tubular and the conductive member includes a cylindrical portion located inside said elastomer member.

9. The connector as in claim 8 wherein said conductive member includes a portion extending outside of the tubular elastomer member, said portion contacting the body.

10. The connector as in claim 9 wherein said portion of the conductive member comprises a circumferential flange.

11. The connector as in claim 1 wherein said conductive member includes a metal strip located between the elastomer member and the outer conductor of the coaxial cable and conforming to the shape of the outer conductor.

12. The connector as in claim 11 wherein the conductive member includes a plurality of stripe extending helically around the cable.

13. The connector as in claim 12 wherein each strip includes a bend.

14. The connector as in claim 1 wherein the elastomer member and the conductive member are integral.

15. The connector as in claim 1 wherein the elastomer member and the conductive member are non-integral.

16. The connector as in claim 1 wherein the conductive member is formed from metal.

17. The connector as in claim 1 wherein the conductive member is formed from non-metal.

18. The connector as in claim 1 including a contact pin and an electrical connection between the contact pin and the central conductor of the cable.

19. The combination of a connector on a corrugated coaxial cable, the combination comprising a connector having a tubular body with an interior wall surrounding a cable-receiving opening, a compressed elastomer member located in the opening;

a corrugated coaxial cable having an outer conductor with peaks and valleys, said cable located in the opening; and

a conductive member in the opening located both between the elastomer member and the outer conductor of the cable and between the elastomer member and the body, said conductive member in direct contact with peaks and valleys of the outer conductor of the corrugated coaxial cable and in direct contact with the body, and said compressed elastomer member in direct contact with the conductive member, so that the compressed elastomer member holds the conductive member against both the peaks and valleys of the outer conductor of the cable and the connector body to form an electrical connection therebetween.

20. The combination as in claim 19 wherein the elastomer member and the conductive member are integral.

21. The combination as in claim 19 wherein the elastomer member and the conductive member are non-integral.

22. The combination as in claim 19 including a chamber in the opening, the elastomer member located in the chamber.

23. The combination as in claim 22 wherein the chamber extends around the opening;

and the elastomer member is tubular and surrounds the end of the cable.

24. The combination as in claim 19 wherein the conductive member is formed from metal.

25. The combination as in claim 19 wherein the conductive member is formed from non-metal.

26. The combination as in claim 25 wherein the conductive member includes carbon.

27. The combination as in claim 19 wherein the conductive member includes a number of elongate conductive members.

28. The combination as in claim 19 wherein said conductive members include nano tubes.

29. The combination as in claim 19 including a contact pin and an electrical connection between the contact pin and the central conductor of the cable.

30. A method of forming an electrical connection between a connector body and the corrugated outer conductor of a coaxial cable, the method comprising the steps of:

A) providing a connector having a body, a cable-receiving cavity in the body opening at one surface of the body, an elastomer member in the cavity and a conductive member in the cavity, the elastomer member in direct contact with the conductive member, the conductive member in direct contact with the body and positioned for direct contact with the corrugated outer conductor of a coaxial cable positioned in the cavity;

B) providing a coaxial cable having an exposed corrugated outer conductor;

C) positioning the coaxial cable in the cavity; and

D) forming an electrical connection between the corrugated outer conductor of the coaxial cable and the body by compressing the elastomer member against the conductive member to hold the conductive member against both the corrugated outer conductor of the cable and the body.

31. The method of claim 30 wherein the elastomer conductive member includes a number of metal strips including the step of:

E) bending the strips against the corrugated outer surface of the coaxial cable.

32. The method of claim 30 wherein the cable includes an inner conductor including the step of:

F) forming a 360 degree shield surrounding the inner conductor and extending between the outer conductor and the body.

33. The method of claim 30 comprising the step of:

G) positioning the elastomer member in a chamber in the cavity and reducing the volume of the chamber to compress the elastomer member.

34. The method of claim 33 wherein the body includes two relative removable members defining opposed surfaces of the chamber, including the step of:

H) reducing the volume of the chamber by moving the members toward each other, and forming a connection between the members.