COAXIAL CABLE

• US 3,643,007 A
• Filed: 04/02/1969
• Issued: 02/15/1972
• Est. Priority Date: 04/02/1969
• Status: Expired due to Term

• Current Assignee: Brandon B. Pusey, Frederic N. Wilkenloh, Jimmie D. Sherrill, Walter Roberts
• Original Assignee: Brandon B. Pusey, Frederic N. Wilkenloh, Jimmie D. Sherrill, Walter Roberts
• Inventors: Roberts, Walter, Sherrill, Jimmie D., Pusey, Brandon B., Wilkenloh, Frederic N.
• Primary Examiner(s): Myers, Lewis H.
• Assistant Examiner(s): Grimley, A. T.
• Application Number:
  US04/815,252
• Time in Patent Office: 1,049 Days
• Field of Search: 174/36,106,105,108,107,117,117.1,126,36,102
• US Class Current: 174/106.00R
• CPC Class Codes: H01B 11/1808 Construction of the conductors

Abstract

Disclosed herein is a coaxial cable structure having not only a center conductor nested axially in a tube of dielectric material and a second electrical conductor formed on the outer peripheral surface of the dielectric body, but an additional or third electrical conductor disposed around this second electrical conductor made of braided copper-clad steel. Surrounding the third conductor is a cylindrical sheath of dielectric material adhesively bonded to the third conductor by a resin copolymer. Both second and third conductors can be made of aluminum-coated polyethylene terepthalate. Where metal-coated plastic is used, the second electrical conductor tape generally is longitudinally wrapped around the dielectric body center conductor composite and the third conductor, made up of the same metallically coated polyethylene terepthalate, is helically wrapped around the second conductor.

Claims

2. An electrical cable as defined by claim 1 further comprising a cylindrical jacket concentrically disposed about said third conductor.

3. An electrical cable as defined in claim 1 wherein said second conductor is a copper foil.

4. An electrical cable as defined in claim 3 wherein said center conductor is composed of materials selected from the group consisting of copper, copper-covered steel and copper-covered aluminum.

5. An electrical cable as defined in claim 3 wherein said dielectric material is composed of solid and foamed polyolefin.

6. An electrical cable as defined in claim 3 wherein the outermost surface of said third conductor is coated with an adhesive film composed of a resin copolymer.

7. An electrical cable as defined in claim 1 wherein individual strands woven together to form said braided flexible conductor, form an angle with the cable axis that is less than 25*.

8. The electrical cable defined in claim 1 wherein said second conductor is made of steel braided strands that are completely covered by a layer of copper.

9. The electrical cable defined in claim 8 wherein each of the strands of said second and third conductors has a rectilinear cross section that possesses a width which is greater than its thickness.

10. The electrical cable defined in claim 1 wherein each of the strands of said third conductor has a rectilinear cross section that possess a width which is greater than its thickness.

11. An electrical cable having only inner and outer electrical conductor means and comprising an elongated cylindrical body of dielectric material, said inner electrical conductor means being embedded and nested axially within said dielectric body, said outer electrical conductor means being of flexible, braided, tubular configuration and being formed on the outer peripheral surface of said dielectric body in peripheral surrounding relation thereto, and a sheath of dielectric made covering and peripherally surrounding said outer conductor means, said outer electrical conductor means being made only of steel braided strands that are each completely covered by a layer of copper.

12. The electrical cable defined in claim 11 wherein said outer electrical conductor comprises first and second electrical conductors nested one within the other, and each of said first and second conductors being made of steel braided strands that are completely covered by copper.

13. The electrical cable defined in claim 11 wherein angulated pairs of said strands, which are woven together to form said outer conductor means, form an angle with the longitudinal cable axis that is less than 25*.