US3860742A - Connection of plastic pipes with ground wires embedded therein - Google Patents

Connection of plastic pipes with ground wires embedded therein Download PDF

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US3860742A
US3860742A US347871A US34787173A US3860742A US 3860742 A US3860742 A US 3860742A US 347871 A US347871 A US 347871A US 34787173 A US34787173 A US 34787173A US 3860742 A US3860742 A US 3860742A
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accordance
pipe system
conductive
conductive wire
pipe
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Jonas Medney
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SMITH FIBERGLASS PRODUCTS Inc A DE CORP
Fiberglass Resources Corp
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Jonas Medney
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Assigned to FIBERGLASS RESOURCES CORPORATION, A DE CORP. reassignment FIBERGLASS RESOURCES CORPORATION, A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MEDNEY, JONAS
Assigned to SMITH FIBERGLASS PRODUCTS INC., A DE. CORP. reassignment SMITH FIBERGLASS PRODUCTS INC., A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KOCH ENGINEERING COMPANY, INC.,
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/01—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions

Definitions

  • This invention relates generally to filament wound resin bonded pipes and more particularly to electrically non-conductive pipes having electrically conductive means.
  • One of the problems is forming a continuous conductive path from one end of the pipe to the other and the second problem is to remove any built up charge in the pipe wall.
  • One means for providing a continuous conductive path is to embed wires in the wall of the pipe.
  • the pipe is comprised of a resin bonded glass fiber wall in which conductive wires are embedded.
  • Aluminum may be used for the conductive wire and has the advantage of having the same modulus of elasticity as the glass and will have the smallest limiting factor as far as tensile strength or stress for pressure carrying capabilities are concerned.
  • Other wires that may be used on a cost preference basis would be copper, magnesium and steel.
  • the number of ends of wire are usually less than the finite number of the glass fibers and are included in the winding operation.
  • the ends are cut and scarfed by selective abrading so as to expose some of the conductive wires.
  • An electroplatic operation can be performed at this point to further build up the conductive ends of the wire over the ground surface of the scarfed end of the pipe to increase insurance of contact with metallic ends.
  • a metallic sleeve is then secured to each end of the pipe in electrical contact with the exposed conductive wires and then a coupling member that provides a conductive path is used to join adjacent sleeves both mechanically and electrically.
  • the pipe be translucent so that any blockage of the material therein may be readily located and removed.
  • Another desirable feature of the present invention is use of epoxy coated conductive wires that are insulated from each other where they cross during the winding operation.
  • An additional feature of the present invention is the use of a conductive adhesive where the conductive sleeves are secured to the scarfed ends of the pipe.
  • the conductive wire means that are exposed by scarfing may be solder dipped or electroplated.
  • the conductive lead wires are wound close to the outside diameter of the pipe and the scarfing of that embodiment is done on the outside diameter.
  • Another embodiment of the invention that is useful where heat is to be applied to the material flowing through the pipe provides that the conductive wires are wound substantially closer to the inside diameter of the pipe and in the second embodiment, of course, the inside diameter would be scarfed and the sleeve applied thereto.
  • the two sleeves that are adjacent to each other are also mechanically and electrically coupled to each other.
  • fillers such as aluminum powders, conductive carbon such as acetylene black, or other compatible conductive fillers in the gel coat.
  • conductive carbon such as acetylene black
  • the same material could be included in the winding resin and can also be deposited on the outer layer of the pipe in order to decrease the electrical resistance of the glass fiber resin system between the conductive wires.
  • the fillers may be included in local areas of the pipe rather than in the whole pipe, in order not to reduce the transparency of the pipe which is advantageous in identifying obstructions in the pipe system.
  • Another object of the present invention is to provide an improved filament wound resin bonded pipe having conductive wires wound integrally therewith.
  • a further object of the present invention is to provide an improved filament wound resin bonded pipe, as described above, wherein the conductive wires are wound relatively close to the outside diameter of the pipe.
  • Yet another object of the present invention is to provide an improved conductive filament wound resin bonded electrical pipe, as described above, wherein the conductive wires are wound relatively close to the inside diameter of the pipe.
  • An advantage of the present invention is that the pipe may be translucent.
  • a feature of the present invention is that a continuous electrical path is provided from one end of the pipe to the other.
  • FIG. 1 is a longitudinal elevational view, partially broken away illustrating one embodiment of a conductive pipe system comprising the present invention
  • FIG. 2 is an exploded, fragmentary view, partially in section, illustrating constructional features of the pipe system shown in FIG. I;
  • FIG. 3 is an enlarged, fragmentary transverse sectional view illustrating the wall structure of one embodiment of the present invention.
  • FIG. 4 is an enlarged view, similar to FIG. 3, illustrating an alternative embodiment of the present invention.
  • FIG. 5 is an enlarged, fragmentary, longitudinal, sectional view taken along line 5-5 of FIG. 1;
  • FIG. 6 is a fragmentary view of a pipe end illustrating another feature of the present invention.
  • the pipe system 10 comprises several coaxial, adjacent lengths of pipe designated by the reference characters 12, 14 and 16.
  • Each length of pipe as shown in FIG. 2, comprises a resin bonded glass fiber tubular section 18 having a wall portion 20 and two end sections 22 and 24.
  • Conductive wires 26 which are preferably coated with an insulating material such as an epoxy resin 27 (FIGS. 3 and 4) are wound integrally with the glass fibers, for example in the helical pattern shown in FIG. 2.
  • the glass fibers and the resin binder therefor will be selectively abraded away and the wires 26 in these sections will be exposed. It is preferred to use coated wire as better bonding between the resin of the pipe system and the wire is obtained preventing the formation of leakage paths and resulting in a stronger pipe.
  • a metallic sleeve 28 is secured to each scarfed end 22 and 24.
  • the sleeve 28 is electrically conductive and is provided with a first annular groove 30 for receiving an O-ring 32 (FIG. 5) and a second annular, generally V-shaped groove 34 for receiving a conductive coupling member 36 (FIG. 1 and FIG. 5).
  • An ohm meter 37 may be connected across the coupling members 36 at each end of each pipe section to test the resistivity thereof.
  • the cross section of the wall section 20 can best be appreciated by reference to FIG. 3. It will be seen that, in one embodiment of the invention, the conductive wires 26 are wound closer to the outside diameter of the tubular section 18. Further, it will be seen in FIG. 3 that by virtue of their own epoxy coating 27 the wires 26 are insulated from each other at their cross over points.
  • FIG. 2 and FIG. 3 for a better understanding of the means for exposing the wires 26.
  • the wires 26 are wound in a generally helical pattern and when the end sections 22 and 24 are scarfed, the angular cut will intersect the plane of the wires 26.
  • a conductive adhesive may be used between the outside diameter of the scarfed ends 22 and 24 and the inside diameter of the sleeves 28 which are tapered at the same angle as the scarfed ends 22 and 24.
  • Another method of increasing the electrical contact area is to metallize the scarfed ends of the pipe, such as by metal spraying, electroplating, die soldering or the like. Metallizing will further raise the conductive ends above the conical surface of the scarfed insulator insuring better contact.
  • a typical metallized end is schematically represented by the reference character 25, as shown in FIG. 6.
  • an alternative embodiment of the present invention contemplates the positioning of the conductive wires 26' closer to the inside diameter of the wall section 20' than in the previous embodiment.
  • the conductive wires 26 may be formed of Nichrome or other resistive material and may be used for heating the material flowing through the pipe.
  • the conductive wires 26 may be coated with an epoxy material 27 for insulation purposes. It will be appreciated from FIG. 4 that greater heat transfer is available by placing the wires 26 closer to the inside diameter of the pipe section 18' and, in addition, the mass of glass fiber material radially outward of the heating wires 26' constitute a heat insulation means.
  • the member 36 may be a stainless steel cable, that is threaded through two pairs of coaxial and chordally oriented openings 38a, 38b, and 38c, 38d that are formed in a sleeve 40.
  • the cable 36 is engaged in the grooves 34 of two adjacent sleeves 28 and takes up the end load of the piping system in addition to providing electrical continuity. It should be noted at this time that the sleeve 40 also serves to compress the O-rings 32.
  • a single metal coupling may be used as where the pipe is to be connected to a ground.
  • the metallic coupling member may be threaded-to permit joining sections together. If both ends are male members then a conventional metal female sleeve would be employed as the coupling member. Generally, if threaded coupling members are employed, one end would be a male and the other end a female coupling.
  • At least two rigid adjacent tubular sections made of resin bonded glass fibers each being defined by an elongated, non-conductive wall including a central portion having axially spaced apart first and second ends;
  • 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 tirst and second ends;
  • 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.
  • 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.
  • each said sleeve includes a second annular groove and there is further provided an O-ring in each said second groove.

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.

Description

United States Patent Medney 1 1 Jan. 14, 1975 [54] CONNECTION OF PLASTIC PIPES WITH 2,577,049 12/1951 Ulinc 138/127 X GROUND WIRES EMBEDDED THEREIN 3,189,676 6/1965 Muller 174/47 Inventor: Jonas Medney, 3504 Woodward St.,
Oceanside, N.Y. 11572 Filed: Apr. 4, 1973 Appl. No.2 347,871
US. Cl. 174/84 S, 138/127, 174/47, 174/78, 285/305, 285/369 Int. Cl H02g 15/08 Field of Search 174/68 C, 36, 84 R, 84 S, 174/355 M, 78, 47, 88 C; 339/14; 138/120, 127, 123, 124, 133, 134, 155; 285/305, 369, 404, 417, 423
References Cited UNITED STATES PATENTS 6/1950 Hollingsworth et al 138/127 Primary ExaminerDarrell L. Clay Attorney, Agent, or Firm-Leonard H. King [57] 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.
14 Claims, 6 Drawing Figures CONNECTION OF PLASTIC PIPES WITH GROUND WIRES EMBEDDED THEREIN The aforementioned Abstract is neither intended to define the invention of the application which, of
course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates generally to filament wound resin bonded pipes and more particularly to electrically non-conductive pipes having electrically conductive means.
2. Description of the Prior Art There is a long standing need for a rugged, light weight pipe that is basically non-conductive but which can still provide a continuous electrical path with grounding available. One use for such a pipe is in a coal mine where the pipe is used to carry limestone for dusting the mine in order to prevent explosions. The powder passing through the pipe can generate a high electrostatic charge which can cause explosions. By providing a continuous electrical path in the wall of the pipe, grounding wires or the like may be used to discharge the pipe and not allow the charge (i.e. voltage) to build up.
SUMMARY OF THE INVENTION In providing a non-conductive plastic pipe which can be grounded there are two basic problems that must be solved. One of the problems is forming a continuous conductive path from one end of the pipe to the other and the second problem is to remove any built up charge in the pipe wall. One means for providing a continuous conductive path is to embed wires in the wall of the pipe. In the present invention the pipe is comprised of a resin bonded glass fiber wall in which conductive wires are embedded. Aluminum may be used for the conductive wire and has the advantage of having the same modulus of elasticity as the glass and will have the smallest limiting factor as far as tensile strength or stress for pressure carrying capabilities are concerned. Other wires that may be used on a cost preference basis would be copper, magnesium and steel. During the course of winding the glass fiber pipe, the number of ends of wire are usually less than the finite number of the glass fibers and are included in the winding operation.
When the pipe is fully cured the ends are cut and scarfed by selective abrading so as to expose some of the conductive wires. An electroplatic operation can be performed at this point to further build up the conductive ends of the wire over the ground surface of the scarfed end of the pipe to increase insurance of contact with metallic ends. A metallic sleeve is then secured to each end of the pipe in electrical contact with the exposed conductive wires and then a coupling member that provides a conductive path is used to join adjacent sleeves both mechanically and electrically.
It is desirable that the pipe be translucent so that any blockage of the material therein may be readily located and removed. Another desirable feature of the present invention is use of epoxy coated conductive wires that are insulated from each other where they cross during the winding operation. An additional feature of the present invention is the use of a conductive adhesive where the conductive sleeves are secured to the scarfed ends of the pipe. Alternatively, the conductive wire means that are exposed by scarfing may be solder dipped or electroplated.
In one embodiment of the present invention the conductive lead wires are wound close to the outside diameter of the pipe and the scarfing of that embodiment is done on the outside diameter. Another embodiment of the invention that is useful where heat is to be applied to the material flowing through the pipe provides that the conductive wires are wound substantially closer to the inside diameter of the pipe and in the second embodiment, of course, the inside diameter would be scarfed and the sleeve applied thereto. In the second embodiment the two sleeves that are adjacent to each other are also mechanically and electrically coupled to each other.
In order to provide still further conductivity to the pipe it is possible to use fillers such as aluminum powders, conductive carbon such as acetylene black, or other compatible conductive fillers in the gel coat. The same material could be included in the winding resin and can also be deposited on the outer layer of the pipe in order to decrease the electrical resistance of the glass fiber resin system between the conductive wires. The fillers may be included in local areas of the pipe rather than in the whole pipe, in order not to reduce the transparency of the pipe which is advantageous in identifying obstructions in the pipe system.
Accordingly, it is an object of the present invention to provide an improved filament wound resin bonded pipe.
Another object of the present invention is to provide an improved filament wound resin bonded pipe having conductive wires wound integrally therewith.
A further object of the present invention is to provide an improved filament wound resin bonded pipe, as described above, wherein the conductive wires are wound relatively close to the outside diameter of the pipe.
Yet another object of the present invention is to provide an improved conductive filament wound resin bonded electrical pipe, as described above, wherein the conductive wires are wound relatively close to the inside diameter of the pipe.
An advantage of the present invention is that the pipe may be translucent.
A feature of the present invention is that a continuous electrical path is provided from one end of the pipe to the other.
These and other objects, features and advantages of the invention will, in part, be pointed out with particularity, and will, in part, become obvious from the following more detailed description of the invention, taken in conjunction with the accompanying drawing which forms an integral part thereof.
BRIEF DESCRIPTION OF THE DRAWINGS In the various figures of the drawing like reference characters designate like parts.
In the drawing:
FIG. 1 is a longitudinal elevational view, partially broken away illustrating one embodiment of a conductive pipe system comprising the present invention;
FIG. 2 is an exploded, fragmentary view, partially in section, illustrating constructional features of the pipe system shown in FIG. I;
FIG. 3 is an enlarged, fragmentary transverse sectional view illustrating the wall structure of one embodiment of the present invention;
FIG. 4 is an enlarged view, similar to FIG. 3, illustrating an alternative embodiment of the present invention;
FIG. 5 is an enlarged, fragmentary, longitudinal, sectional view taken along line 5-5 of FIG. 1; and
FIG. 6 is a fragmentary view of a pipe end illustrating another feature of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawing, and in particular to FIG. 1, there is shown a pipe system 10 comprising the present invention. The pipe system 10 comprises several coaxial, adjacent lengths of pipe designated by the reference characters 12, 14 and 16. Each length of pipe, as shown in FIG. 2, comprises a resin bonded glass fiber tubular section 18 having a wall portion 20 and two end sections 22 and 24. Conductive wires 26 which are preferably coated with an insulating material such as an epoxy resin 27 (FIGS. 3 and 4) are wound integrally with the glass fibers, for example in the helical pattern shown in FIG. 2. When the ends 22 and 24 are scarfed as shown in FIG. 2, the glass fibers and the resin binder therefor will be selectively abraded away and the wires 26 in these sections will be exposed. It is preferred to use coated wire as better bonding between the resin of the pipe system and the wire is obtained preventing the formation of leakage paths and resulting in a stronger pipe.
A metallic sleeve 28 is secured to each scarfed end 22 and 24. The sleeve 28 is electrically conductive and is provided with a first annular groove 30 for receiving an O-ring 32 (FIG. 5) and a second annular, generally V-shaped groove 34 for receiving a conductive coupling member 36 (FIG. 1 and FIG. 5). An ohm meter 37 may be connected across the coupling members 36 at each end of each pipe section to test the resistivity thereof.
The cross section of the wall section 20 can best be appreciated by reference to FIG. 3. It will be seen that, in one embodiment of the invention, the conductive wires 26 are wound closer to the outside diameter of the tubular section 18. Further, it will be seen in FIG. 3 that by virtue of their own epoxy coating 27 the wires 26 are insulated from each other at their cross over points.
Reference now may be had to FIG. 2 and FIG. 3 for a better understanding of the means for exposing the wires 26. It will be seen that the wires 26 are wound in a generally helical pattern and when the end sections 22 and 24 are scarfed, the angular cut will intersect the plane of the wires 26. Thus, by selective abrasion of the glass fibers and the resinous binder, a short length of the ends of the wires 26 will be exposed so as to be contacted by the metallic sleeve 28. The selective abrasion results from the scarfing operation to improve the electrical path. A conductive adhesive may be used between the outside diameter of the scarfed ends 22 and 24 and the inside diameter of the sleeves 28 which are tapered at the same angle as the scarfed ends 22 and 24. Another method of increasing the electrical contact area is to metallize the scarfed ends of the pipe, such as by metal spraying, electroplating, die soldering or the like. Metallizing will further raise the conductive ends above the conical surface of the scarfed insulator insuring better contact. A typical metallized end is schematically represented by the reference character 25, as shown in FIG. 6.
As shown in FIG. 4, an alternative embodiment of the present invention contemplates the positioning of the conductive wires 26' closer to the inside diameter of the wall section 20' than in the previous embodiment. The conductive wires 26 may be formed of Nichrome or other resistive material and may be used for heating the material flowing through the pipe. As in the previous embodiment, the conductive wires 26 may be coated with an epoxy material 27 for insulation purposes. It will be appreciated from FIG. 4 that greater heat transfer is available by placing the wires 26 closer to the inside diameter of the pipe section 18' and, in addition, the mass of glass fiber material radially outward of the heating wires 26' constitute a heat insulation means.
By referring to FIG. 1, together with FIG. 5, a better understanding may be had of the means for both me-' chanically and electrically coupling adjacent pipe sections. The member 36 may be a stainless steel cable, that is threaded through two pairs of coaxial and chordally oriented openings 38a, 38b, and 38c, 38d that are formed in a sleeve 40. For a complete understanding of the principle of operation of this type of coupling, reference may be had to my issued U.S. Pat. No. 3,606,402. Briefly, the cable 36 is engaged in the grooves 34 of two adjacent sleeves 28 and takes up the end load of the piping system in addition to providing electrical continuity. It should be noted at this time that the sleeve 40 also serves to compress the O-rings 32.
In some installations a single metal coupling may be used as where the pipe is to be connected to a ground.
If desired, the metallic coupling member may be threaded-to permit joining sections together. If both ends are male members then a conventional metal female sleeve would be employed as the coupling member. Generally, if threaded coupling members are employed, one end would be a male and the other end a female coupling.
There has been disclosed heretofore the best embodiment of the invention presently contemplated. However, it is to be understood that various changes and modifications may be made thereto without departing from the spirit of the invention.
What I claim as new and desire to secure by Letters Patent is:
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, non-conductive 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 tirst 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.

Claims (14)

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.
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Cited By (40)

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US4262715A (en) * 1977-11-23 1981-04-21 Maschinenfabrik Andritz Actiengesellschaft Decorticating drum with selective processing mode
US4269436A (en) * 1980-04-14 1981-05-26 Jonas Medney Pre-insulated pipe system
US4330811A (en) * 1978-04-03 1982-05-18 Ameron, Inc. Filament-reinforced plastic article
US4347900A (en) * 1980-06-13 1982-09-07 Halliburton Company Hydraulic connector apparatus and method
US4375239A (en) * 1980-06-13 1983-03-01 Halliburton Company Acoustic subsea test tree and method
US4378850A (en) * 1980-06-13 1983-04-05 Halliburton Company Hydraulic fluid supply apparatus and method for a downhole tool
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US6148866A (en) * 1995-09-28 2000-11-21 Fiberspar Spoolable Products, Inc. Composite spoolable tube
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US6361299B1 (en) 1997-10-10 2002-03-26 Fiberspar Corporation Composite spoolable tube with sensor
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US20030209282A1 (en) * 2002-03-13 2003-11-13 NIPPON SANSO CORPORATION and NITTO KOHKI CO., LTD. Fuel filling device and fuel leakage detection method
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US8678042B2 (en) 1995-09-28 2014-03-25 Fiberspar Corporation Composite spoolable tube
US8746289B2 (en) 2007-02-15 2014-06-10 Fiberspar Corporation Weighted spoolable pipe
US8955599B2 (en) 2009-12-15 2015-02-17 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US9206676B2 (en) 2009-12-15 2015-12-08 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US20170248259A1 (en) * 2014-09-30 2017-08-31 Flexsteel Pipeline Technologies Connector for pipes
US9890880B2 (en) 2012-08-10 2018-02-13 National Oilwell Varco, L.P. Composite coiled tubing connectors
US10639571B2 (en) * 2018-01-02 2020-05-05 Haier Us Appliance Solutions, Inc. Water filter assembly
US10651572B1 (en) * 2019-06-10 2020-05-12 Meter Technology Werks, LLC Bonding jumper system
US10927632B2 (en) 2016-09-15 2021-02-23 Halliburton Energy Services, Inc. Downhole wire routing
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US4262715A (en) * 1977-11-23 1981-04-21 Maschinenfabrik Andritz Actiengesellschaft Decorticating drum with selective processing mode
US4330811A (en) * 1978-04-03 1982-05-18 Ameron, Inc. Filament-reinforced plastic article
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US4347900A (en) * 1980-06-13 1982-09-07 Halliburton Company Hydraulic connector apparatus and method
US4375239A (en) * 1980-06-13 1983-03-01 Halliburton Company Acoustic subsea test tree and method
US4378850A (en) * 1980-06-13 1983-04-05 Halliburton Company Hydraulic fluid supply apparatus and method for a downhole tool
US4565393A (en) * 1982-11-05 1986-01-21 Ameron Inc. Pipe joint
WO1991008373A1 (en) * 1989-11-24 1991-06-13 Framo Developments (Uk) Limited Pipe system with electrical conductors
US5334801A (en) * 1989-11-24 1994-08-02 Framo Developments (Uk) Limited Pipe system with electrical conductors
EP0466276A1 (en) * 1990-07-12 1992-01-15 Wavin B.V. Method and device used in making a connection of a cable duct of thermoplastic material to another element
US5388926A (en) * 1993-02-22 1995-02-14 The United States Of America As Represented By The Secretary Of The Navy Composite coupling for towed arrays
US5553896A (en) * 1995-02-15 1996-09-10 Pilot Industries, Inc. Electrically insulated fluid coupling assembly
US5671955A (en) * 1995-06-09 1997-09-30 American Fence Corporation Threadless pipe coupler for sprinkler pipe
US6148866A (en) * 1995-09-28 2000-11-21 Fiberspar Spoolable Products, Inc. Composite spoolable tube
US8678042B2 (en) 1995-09-28 2014-03-25 Fiberspar Corporation Composite spoolable tube
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US6357485B2 (en) 1995-09-28 2002-03-19 Fiberspar Corporation Composite spoolable tube
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US8110741B2 (en) 1995-09-28 2012-02-07 Fiberspar Corporation Composite coiled tubing end connector
US8066033B2 (en) 1995-09-28 2011-11-29 Fiberspar Corporation Composite spoolable tube
US20100212769A1 (en) * 1995-09-28 2010-08-26 Quigley Peter A Composite spoolable tube
US20040031532A1 (en) * 1995-09-28 2004-02-19 Quigley Peter A. Composite spoolable tube
US5951812A (en) * 1997-05-23 1999-09-14 A. O. Smith Corporation Joining member and method of joining two conductive pieces of fiberglass reinforced plastic pipe
US6361299B1 (en) 1997-10-10 2002-03-26 Fiberspar Corporation Composite spoolable tube with sensor
US6706348B2 (en) 1997-10-10 2004-03-16 Fiberspar Corporation Composite spoolable tube with sensor
US6328073B1 (en) * 1998-08-07 2001-12-11 Automotive Fluid Systems, Inc. Fluid-tight conduit connection and method of making same
US20020185188A1 (en) * 2001-04-27 2002-12-12 Quigley Peter A. Composite tubing
US20040072485A1 (en) * 2001-04-27 2004-04-15 Quigley Peter A. Buoyancy control systems for tubes
US8763647B2 (en) 2001-04-27 2014-07-01 Fiberspar Corporation Composite tubing
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US20080014812A1 (en) * 2001-04-27 2008-01-17 Quigley Peter A Buoyancy Control Systems for Tubes
US20030087052A1 (en) * 2001-11-05 2003-05-08 Wideman Thomas W. Spoolable composite tubing with a catalytically cured matrix
US6904944B2 (en) * 2002-03-13 2005-06-14 Nitto Kohki Co., Ltd. Fuel filling device and fuel leakage detection method
US20030209282A1 (en) * 2002-03-13 2003-11-13 NIPPON SANSO CORPORATION and NITTO KOHKI CO., LTD. Fuel filling device and fuel leakage detection method
US7870874B2 (en) 2002-03-29 2011-01-18 Fiberspar Corporation Systems and methods for pipeline rehabilitation
US7487802B2 (en) 2002-03-29 2009-02-10 Fiberspar Corporation Systems and methods for pipeline rehabilitation
US6978804B2 (en) 2002-03-29 2005-12-27 Fiberspar Corporation Systems and methods for pipeline rehabilitation
US20040003856A1 (en) * 2002-03-29 2004-01-08 Quigley Peter A. Systems and methods for pipeline rehabilitation
US7152632B2 (en) 2002-03-29 2006-12-26 Fiberspar Corporation Systems and methods for pipeline rehabilitation
US6739630B2 (en) * 2002-06-12 2004-05-25 The Lamson & Sessions Co. Pipe joint and coupling
US20050189029A1 (en) * 2004-02-27 2005-09-01 Fiberspar Corporation Fiber reinforced spoolable pipe
US7523765B2 (en) 2004-02-27 2009-04-28 Fiberspar Corporation Fiber reinforced spoolable pipe
US20090173406A1 (en) * 2004-02-27 2009-07-09 Quigley Peter A Fiber Reinforced Spoolable Pipe
US8678041B2 (en) 2004-02-27 2014-03-25 Fiberspar Corporation Fiber reinforced spoolable pipe
US8001997B2 (en) 2004-02-27 2011-08-23 Fiberspar Corporation Fiber reinforced spoolable pipe
US8187687B2 (en) 2006-03-21 2012-05-29 Fiberspar Corporation Reinforcing matrix for spoolable pipe
US20080006338A1 (en) * 2006-03-21 2008-01-10 Wideman Thomas W Reinforcing Matrix for Spoolable Pipe
US20080006337A1 (en) * 2006-03-22 2008-01-10 Quigley Peter A Dual Containment Systems, Methods and Kits
US20080078880A1 (en) * 2006-09-29 2008-04-03 Airbus Uk Limited Aircraft fuel pipe coupling
US20080185042A1 (en) * 2007-02-02 2008-08-07 Michael Feechan Multi-cell spoolable composite pipe
US8671992B2 (en) 2007-02-02 2014-03-18 Fiberspar Corporation Multi-cell spoolable composite pipe
US8746289B2 (en) 2007-02-15 2014-06-10 Fiberspar Corporation Weighted spoolable pipe
US8985154B2 (en) 2007-10-23 2015-03-24 Fiberspar Corporation Heated pipe and methods of transporting viscous fluid
US20090107558A1 (en) * 2007-10-23 2009-04-30 Quigley Peter A Heated pipe and methods of transporting viscous fluid
US20100218944A1 (en) * 2009-01-23 2010-09-02 Quigley Peter A Downhole fluid separation
US9127546B2 (en) 2009-01-23 2015-09-08 Fiberspar Coproation Downhole fluid separation
US8955599B2 (en) 2009-12-15 2015-02-17 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US9206676B2 (en) 2009-12-15 2015-12-08 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US20110210542A1 (en) * 2010-02-23 2011-09-01 Makselon Christopher E Connector for Spoolable Pipe
US9890880B2 (en) 2012-08-10 2018-02-13 National Oilwell Varco, L.P. Composite coiled tubing connectors
US20170248259A1 (en) * 2014-09-30 2017-08-31 Flexsteel Pipeline Technologies Connector for pipes
US10962154B2 (en) * 2014-09-30 2021-03-30 Trinity Bay Equipment Holdings, LLC Connector for pipes
US11231134B2 (en) 2014-09-30 2022-01-25 Trinity Bay Equipment Holdings, LLC Connector for pipes
US11846372B2 (en) 2016-07-14 2023-12-19 Masterflex Se Hose line for transporting abrasive media and method and device for production thereof
US10927632B2 (en) 2016-09-15 2021-02-23 Halliburton Energy Services, Inc. Downhole wire routing
US10639571B2 (en) * 2018-01-02 2020-05-05 Haier Us Appliance Solutions, Inc. Water filter assembly
US10651572B1 (en) * 2019-06-10 2020-05-12 Meter Technology Werks, LLC Bonding jumper system

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