Coaxial cable plug with center conductor as center contact

• US 4,138,188 A
• Filed: 12/21/1977
• Issued: 02/06/1979
• Est. Priority Date: 12/21/1977
• Status: Expired due to Term

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Shannon, Suel G.
• Primary Examiner(s): Dost, Gerald A.
• Application Number:
  US05/862,712
• Time in Patent Office: 412 Days
• Field of Search: 339/177 R, 339/177 E, 339/278 R
• US Class Current: 439/578
• CPC Class Codes: H01R 13/025 formed by the conductors of a cable end
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule
• CPC Class Codes: Y10S 439/93 Coupling part wherein contact is comprised of a wire or brush

Abstract

An end plug for a coaxial cable in which the center conductor contact comprises an extension of the dielectric spacer of the plug with the center conductor of the cable being positioned around the spacer extension in grooves formed therein. The depth of the grooves is less than the center conductor diameter so that the center conductor extends out the grooves and will make electrical contact with a mating connector.

Claims

1. A plug termination for terminating a coaxial cable having a center conductor and an outer conductor with an insulative spacer therebetween, and with said plug comprising:

ferrule means having a first aperture extending therethrough and with a first end portion thereof inserted between said outer conductor and said insulative spacer and further with a portion of said insulative spacer having the center conductor retained therein being positioned in said first aperture at said first end of said ferrule means; and

dielectric spacer means positioned within the second end of said ferrule means and comprising a main body portion having a second aperture formed therein, with the center conductor of said cable extending through said second aperture to a first end of said main body portion of said dielectric spacer means;

said dielectric spacer means further comprising a rod-like member having a free end and extending from said first end of said main body portion and further having a groove formed on the surface of said rod-like member which extends from said second aperture and contains therein a portion of said center conductor of said cable to form a center conductor contact;

the depth of at least a portion of said groove being less than the diameter of said center conductor.

2. A plug termination as in claim 1 in which said groove extends across the end of said rod-like member.

3. A plug termination as in claim 1 in which said groove is configured in a generally helical manner around said rod-like member.

4. A combination plug termination as in claim 3 in which said groove extends across the end of said rod-like member.

5. A plug termination as in claim 1 in which said groove is configured to extend from said second aperture along the side of said rod-like member, across the free end of said rod-like member and then back towards said main body of said dielectric spacer along the side of said rod-like member.

6. A plug termination as in claim 1 in which:

said second aperture extends through said rod-like member to said first end thereof; and

in which said groove extends along the side of said rod-like member back towards main body of said dielectric spacer.

7. A plug termination as in claim 1 in which:

said rod-like member has a protuberance extending from said first end thereof; and

in which the end of said center conductor is wound around said protuberance.

8. In combination, a coaxial cable having a center conductor, an outer conductor, and an insulative spacer between said center and outer conductors, and a plug for terminating said cable which comprises:

ferrule means having a first aperture extending therethrough;

dielectric spacer means positioned within said first aperture and having a second aperture extending therethrough;

said dielectric spacer means further comprising a rod-like member extending therefrom with grooves formed on the surface thereof;

the outer conductor of said cable being positioned over a portion of said ferrule means, the insulated center conductor being positioned within a portion of said ferrule means, and the uninsulated center conductor extending through said second aperture in said dielectric spacer means and positioned within the groove formed in the surface of said rod-like member;

the depth of at least a portion of said groove being less than the diameter of said center conductor.

9. A combination as in claim 8 in which said groove is configured around said rod-like member in a manner similar to that of a helix.

10. A combination as in claim 8 in which:

said groove extends across the end of said rod-like member.

11. A combination as in claim 10 in which said groove has a configuration around said rod-like member similar to that of a helix.

12. A combination as in claim 8 in which said groove is configured to extend from said second aperture along the side of said rod-like member.

13. A combination as in claim 8 in which:

said second aperture extends through said rod-like member to the end thereof; and

in which said groove extends from the aperture at the end of said rod-like member along the side of said rod-like member back towards main body of said dielectric spacer means.

14. A combination as in claim 8 in which:

said rod-like member has a protuberance extending therefrom; and

in which the end of said center conductor is wound around said protuberance.