CONNECTION OF PLASTIC PIPES WITH GROUND WIRES EMBEDDED THEREIN

• US 3,860,742 A
• Filed: 04/04/1973
• Issued: 01/14/1975
• Est. Priority Date: 04/04/1973
• Status: Expired due to Term

• Current Assignee: Smith Fiberglass Products, Inc.
• Original Assignee: Jonas Medney
• Inventors: Medney, Jonas
• Primary Examiner(s): Clay, Darrell L.
• Application Number:
  US05/347,871
• Time in Patent Office: 650 Days
• Field of Search: 174/68C,36,84R,84S,355M,78,47,88C 339/14 138/120,127,123,124,133,134,155 285/305,369,404,417,423
• US Class Current: 174/84.00S
• CPC Class Codes: F16L 25/01 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
• CPC Class Codes: H01R 4/60 Connections between or with tubular conductors H01R4/56 takes precedence
• CPC Class Codes: H02G 15/08 Cable junctions for gas or oil filled cables H02G15/24

Abstract

There is provided a filament wound plastic pipe in which conductive wires are embedded. In one embodiment of the invention the ends of the pipe are scarfed by selective abraiding so as to expose portions of the conductive wire means. A metallic sleeve is secured to the scarfed ends of the pipe and contacts the exposed conductive wire means. Two adjacent pipe sections are mechanically and electrically joined to each other by a connecting member that is a conductor which is in electrical contact with both adjacent sleeves.

Claims

1. An electrically conductive insulator plastic pipe system comprising:

a. at least two rigid adjacent tubular sections made of resin bonded glass fibers each being defined by an elongated, nonconductive wall including a central portion having axially spaced apart first and second ends;

b. conductive wire means completely embedded within each said wall along said central portion thereof and extending between said first and second ends, said conductive wire means being exposed only proximate each said first and second ends; and

c. external, axially elongated, annular coupling means mechanically coupling two adjacent ones of said tubular sections and electrically coupling said exposed conductive wire means to said two adjacent ends of said tubular sections, said annular coupling means extending at least partially over said two adjacent tubular sections, wherein said annular coupling means comprises an electrically conductive sleeve positioned about each said first and said second end, said conductive sleeve being in electrical contact with said exposed conductive wire means, a tubular member extending over said sleeves of said two adjacent ones of said tubular sections, and a conductor in engagement with said tubular member and said sleeves, said conductor being in electrical contact with said two adjacent ones of said sleeves whereby there is electrical continuity between said two adjacent ones of said tubular sections.

2. The pipe system in accordance with claim 1 wherein said tubular sections are translucent.

3. The pipe system in accordance with claim 1 wherein said conductive wire means are copper.

4. The pipe system in accordance with claim 1 wherein said conductive wire means are aluminum.

5. The pipe system in accordance with claim 1 wherein said conductive means are resistance wires.

6. The pipe system in accordance with claim 1 wherein said conductive means are steel.

7. The pipe system in accordance with claim 1 wherein there is further included an insulator coating on said conductive wire means.

8. The pipe system in accordance with claim 1 wherein said conductive wire means are positioned proximate the outside diameter of said tubular sections.

9. The pipe system in accordance with claim 1 wherein said conductive wire means are positioned proximate the inside diameter of said tubular sections.

10. The pipe system in accordance with claim 9 wherein said conductive wire means are resistance wires.

11. The pipe system in accordance with claim 1 wherein each said sleeve has at least one annular groove formed on the outside diameter thereof, said tubular member havIng two pairs of coaxial, substantially chordally oriented openings in axial alignment with said grooves on said sleeve, said conductor extending through the aligned openings in said tubular member whereby said conductor is positioned in the grooves of two said adjacent sleeves.

12. The pipe system in accordance with claim 11 wherein each said sleeve includes a second annular groove and there is further provided an O-ring in each said second groove.

13. The pipe system in accordance with claim 1 wherein there is further provided a conductive adhesive intermediate each said sleeve and said first and second ends.

14. The pipe system in accordance with claim 1 wherein there is further included a metallized coating over said exposed portions of said conductive wire means.