US3818412A - Electric conductor and method - Google Patents
Electric conductor and method Download PDFInfo
- Publication number
- US3818412A US3818412A US00322311A US32231173A US3818412A US 3818412 A US3818412 A US 3818412A US 00322311 A US00322311 A US 00322311A US 32231173 A US32231173 A US 32231173A US 3818412 A US3818412 A US 3818412A
- Authority
- US
- United States
- Prior art keywords
- conductive
- core
- overwrap
- overcoat
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0063—Ignition cables
Definitions
- the improved electrical conductor of this invention includes a conductive core, means to retain the elements of the core in uniform circular cross-section and means for insuring uniform conductance between the core and a semiconductive overcoat.
- the core includes a plurality of conductive fibers, such as the conductive fibers disclosed in US. Pat. No. 3,247,020, which is assigned to the assignee of the instant application.
- the fibers are securely retained in a cylindrical bundle by winding nonconductive strands, under tension, around the core fibers.
- the strand windings are preferably distinct, rather than laced, to facilitate stripping of the core and are uniformly spaced to provide a matrix of nonconductive spaces to assure uniform conductance.
- the semiconductive overcoat preferably includes poly tetrafluoroethylene, because of its high temperature service capabilities and wear resistance and includes a suspension of fine conductive particles, preferably graphite or carbon.
- the overwrap includes two distinct winding layers, rather than a braid, which is easier to strip and provides more uniform spacing between the strands.
- the spacing is preferably controlled vto between 1/16 and 3/16 inch, measured between cross-over points, which, in combination with the semiconductive overcoat, provides uniform conductance between the overcoat and the core.
- the thickness of the overwrap may also be more accurately controlled and is preferably between about 0.005 to 0.010 inch.
- FIG. 1 is a perspective view, with cut away portions.
- FIG. 2 is a perspective, partially schematic view of the conductive core and the method of winding the overwrap in the manufacture of the electrical conductor shown in FIG. 1;
- FIG.- 3 is an end view of the electrical conductor shown in FIG. 1.
- the insulated conductor 20 shown in FIGS. 1 and 3 includes a conductive core 22, a non-conductive overwrap 24 and a semi-conductive overcoat 26.
- the core is composed of a plurality of elongated conductive fibers 38, as shown in FIG. 3.
- the conductive fibers may be formed from strands of glass by the method described in US. Pat. No. 3,269,883, which is assigned to the assignee of the instant application. Reference may also be made to US. Pat. No. 3,247,020.
- the overwrap 24 comprises winds of non-conductive strands, such as the glass strands disclosed in US. Pat. NO. 2,333,961 and sold by the assignee of the instant application as E Glass.”
- the strands are preferably wound under tension in distinct layers, rather than braided, as shown in FIG. 2.
- the first strand 28 is wound around the core under tension to form a first layer 30 and the second strand 32 is wound under tension over the first layer to form a second layer 34, generally perpendicular to the first layer.
- the winding method shown in FIG. 2 includes two spindles 36 which tension the strands 28 and 32 during winding.
- the strands are preferably wound under tension to accurately control the circular cross-section of the fiber bundle 22, which is particularly important in maintaining uniform conductance, as described hereinbelow.
- the strand windings are preferably spaced on the core 22 to provide a uniform matrix of non-insulating or conductive diamond-shaped openings 37.
- the strands are uniformly spaced a distance of H16 to 3/l 6 inch, measured longitudinally on the core from cross-over points the thickness of the overwrap is between about 0.005 to 0.010 inch to provide uniform conductance between the semiconductive overcoat 26 and the conductive core 22.
- the strands may be wound on the core in a conventional winding apparatus, such as a double serving unit, at 1 1,000 rpm, for example.
- a positive tension of about 50 grams has been found particularly suitable to retain the circular cross-section of the core 22.
- the spacing between the strands is greater than threesixteenth of an inch, a Catinary or looping effect occurs between the semiconductive overcoat and the core with corona losses. Where the spacing is smaller, the strike through is limited.
- the winding of the overwrap under tension is particularly important to the conductor of this invention to maintain the glass fiber core in a cylindrical bundlehaving a uniform cross-section.
- the uniform cross-section of the bundle assures a more uniform conductance in the conductive roving of this invention and thereby limits stray radiation.
- the winding of the overwrapin two separate windings makes the overwrap easier to strip, which is particularly important in certain applications of the conductor of this invention.
- the uniform spacing of the strands, as described above, in combination with the semiconductive overcoat and the uniform thickness of the overwrap also assures uniform conductance.
- the overcoat 26 is a uniform layer of a semiconductive material, which forms a radiation shield for the conductor.
- the overcoat is a high temperature and friction resistant material having fine particles of a conductive powder suspended therein.
- the preferred material for the overcoat is a semiconductive poly tetrafluoroethylene, which has at least four advantages in the conductor of this invention: (1 poly tetrafluoroethylene having suspended conductive particles provides an excellent electrical shield, eliminating stray radiation; (2) poly tetrafluoroethylene is easier to strip than conventional synthetic rubber products, eliminating a strip-coat application; (3) poly tetrafluoroethylene has excellent high temperature service capabilities; and (4) poly tetrafluoroethylene protects the core because of its low coefficient of friction.
- other materials may also be utilized, including Silastic, which is a semiconductive silicone rubber available from Dow Corning Corporation.
- the preferred conductive material is a graphite or carbon particulate, although other conductive materials may also be utilized.
- Graphite is relatively inexpensive and commercially available in uniform size ranges.
- the preferred maximum size range for the graphite powder is about percent, 1 to 3 microns and 90 percent less than 1 micron.
- the core and overwrap are dipped into a poly tetrafluoroethylene solution, wiped by a metal or rubber die and cured in a vertical gas-filled tower.
- Tetrafluoroethylene is available commercially from E. l. duPont de Nemours Company under the trade name fTeflon.
- the graphite or carbon particles are added to the Teflon as a dispersion, which may also include a filler, such as silicone, wetting agents, etc.
- a suitable graphite dispersion for example, includes 100 parts by volume tetrafluoroethylene, 27.3 parts by volume graphite and 62.7 parts by volume water. The total graphite in this composition is 22 percent by weight.
- the preferred percentage of graphite in the overcoat is between about 1 l to 90 percent by weight, depending upon the preferred resistance range of the application.
- the preferred resistance is about 5,000 ohms per foot, however in a heating element, the preferred resistance is about 150 to 170 ohms per foot.
- the preferred thickness of the overcoat is about 0.005 to 0.0l0 inches.
- the insulated conductor of this invention may then be utilized as an ignition cable, for example, by extruding a primary insulation, such as silicone rubber, over the overcoat, retaining the primary insulation with a fiber glass braid and forming an outer jacket over the braid of a suitable material, including silicone rubber.
- the preferred method of manufacturing the insulated electrical conductor 20 of this invention then includes, bundling of a plurality of elongated conductive fibers 38 into a generally cylindrical core 22, as shown in FIG. 2.
- the number of fibers will depend upon the particular application for the conductor, however a suitable core has 60 conductive glass fibers, each fiber having a diameter of about 0.005 inch, forming a cylindrical core having a diameter of about 0.050 inch.
- the method then includes winding, under tension, distinct layers (30 and 34) of non-conductive strands 28 and 32, as shown in H6. 2, to securely retain the fibers 38 of the core in a uniform circular cross-section.
- the strands 28 and 30 are preferably uniformly spaced and angularly wound on the core to provide a matrix of diamondshaped non-insulating apertures 37, uniformly spaced axially and longitudinally on the core to assure uniform conductance between the core 22 and the semiconductive overcoat 26.
- the core and overwrap are encased in a semiconductive overcoat 26, preferably poly tetrafluoroethylene, having fine particles of graphite or carbon suspended therein.
- the overcoat includes between about 2 and 30 percent by weight graphite or carbon particles.
- the semiconductive overcoat may be applied to the core and overwrap by dipping the core in a solution of tetrafluoroethylene, as described above, wiping the overcoat with a metal or rubber die and curing in a vertical tower.
- a suitable curing temperature for poly tetrafluoroethylene is about 680 F.
- the electrical conductor of this invention substantially eliminates interference to television and radio, for example, when utilized as a spark-type ignition cable, as described above. Further, the insulated conductor of this invention is particularly suitable for high temperature service applications, in excess of 450 F, while eliminating stray radiation.
- An insulated electrical connector comprising, in combination, an electrically conductive core, an overwrap and a semi-conductive overcoat, said core comprising a plurality of flexible conductive fibers, said overwrap comprising at least one winding substantially evenly distributed on said core, defining a matrix of substantially uniformly spaced non-conductive spaces and retaining said fibers in a cylindrical bundle having a constant cross-section and said overcoat comprising a coating of polymerized tetrafluoroethylene having fine carbon particles suspended therein filling said spaces.
- An insulated electric cable comprising, in combination, 'a conductive core including a plurality of elongated flexible fibers, an overwrap retaining said fibers in a cylindrical bundle, comprising at least two noninterlacing layers of non-conductive strands uniformly wound in tension around said fibers to tightly retain said fibers and providing a matrix of non-insulating apertures of substantially uniform size, and a polymeric semiconductive overcoat encasing said cylindrical core and overwrap and substantially filling said apertures, said apertures providing a uniform conductance between said cylindrical conductive core and said semiconductive overcoat.
- polymeric semiconductive overcoat comprises a layer of polymerized tetrafluoroethylene having fine graphite particles suspended therein.
- An overcoated conductive roving comprising, in combination, a plurality of elongated conductive glass fibers securely retained by an overwrap in a cylindrical bundle having uniform cross-section and a semiconductive overcoat encasing said cylindrical core, said overcoat being at least one winding of glass strands forming non-conductive spaces, said overcoat comprising a layer of polymerized tetrafluoroethylene having suspended therein 2 to 30 percent by weight fine carbonaceous particles and said overcoat substantially filling said spaces.
- a conductive core comprising a plurality of electrically conductive elongated glass fibers in a cylindrical bundle having a uniform cross-section, said glassfibers securely retained in said cylindrical bundle by at least two angularly disposed distinct windings of glass strands forming a non-conductive overwrap, said windings evenly distributed on said core, in spaced relation, forming a matrix of uniformly spaced nonconductive apertures, and a semi-conductive overcoat enclosing said core and overwrap, and substantially filling said apertures, said overcoat comprising a layer of polymerized tetrafluoroethylene having about 2 to 30 percent, by weight, fine particles of graphite suspended therein.
- a method of manufacturing an insulated electrical conductor the steps of: bundling a plurality of elongated flexible conductive fibers into a cylindrical core, uniformly winding under tension at least two distinct layers of non-conductive strands around said core (1) to securely bind said fibers into a cylindrical core having uniform cross-section and (2) to uniformly space said windings on said core to define a matrix of non-insulating apertures uniformly spaced axially and circumferentially on said core, and encasing said cylindrical core, non-conductive windings and apertures in a semi-conductive polymeric overcoat, said windings thereby providing uniform conductance between said core and said overcoat.
- An insulated electric cable comprising, in combination a conductive core including a plurality of flexible fibers, an overwrap containing said fibers in a cylindrical bundle comprising; at least two non-interlacing layers of non-conductive continuous linear elements uniformly wound under tension in tight retaining relation about said core fibers and providing a porosity of substantially uniform magnitude along the length of said overwrap, and a semiconductive overcoat of flexible material permeating said overwrap and communicating with said cylindrical conductive core such that a substantially uniform conductance is established between the semiconductive overcoat material and conductive core along its length.
Abstract
Description
Claims (24)
- 2. The insulated electrical conductor defined in claim 1, characterized in that said overwrap comprises at least two angularly disposed distinct windings of glass strands.
- 3. The insulated electrical conductor defined in claim 2, characterized in that said apertures are 1/16 to 3/16 inch, measured longitudinally between cross-over points.
- 4. The insulated electrical conductor defined in claim 1, characterized in that said overcoat includes about 2 to 30 percent by weight of said fine carbon particles.
- 5. An insulated electric cable, comprising, in combination, a conductive core including a plurality of elongated flexible fibers, an overwrap retaining said fibers in a cylindrical bundle, comprising at least two non-interlacing layers of non-conductive strands uniformly wound in tension around said fibers to tightly retain said fibers and providing a matrix of non-insulating apertures of substantially uniform size, and a polymeric semiconductive overcoat encasing said cylindrical core and overwrap and substantially filling said apertures, said apertures providing a uniform conductance between said cylindrical conductive core and said semiconductive overcoat.
- 6. The insulated electric cable defined in claim 5, characterized in that said polymeric semiconductive overcoat comprises a layer of polymerized tetrafluoroethylene having fine graphite particles suspended therein.
- 7. The insulated electric cable defined in claim 6, characterized in that said overcoat includes about 2 to 30 percent by weight of said fine particles of graphite.
- 8. The insulated electric cable defined in claim 5, characterized in that the width of said overwrap is about 0.005 to 0.010 inches.
- 9. The insulated electric cabLe defined in claim 5, characterized in that said non-insulated apertures are about 1/16 to 3/16 inches, measured between cross-over points of the strands.
- 10. The insulated electric cable defined in claim 5, characterized in that said flexible fibers are conductive strands of glass and said overwrap strands are non-conductive glass strands.
- 11. An overcoated conductive roving, comprising, in combination, a plurality of elongated conductive glass fibers securely retained by an overwrap in a cylindrical bundle having uniform cross-section and a semi-conductive overcoat encasing said cylindrical core, said overcoat being at least one winding of glass strands forming non-conductive spaces, said overcoat comprising a layer of polymerized tetrafluoroethylene having suspended therein 2 to 30 percent by weight fine carbonaceous particles and said overcoat substantially filling said spaces.
- 12. The conductive roving defined in claim 11, characterized in that said overwrap is defined by at least two windings of glass strands forming said non-conductive overwrap having a matrix of uniformly spaced conductive apertures.
- 13. The conductive roving defined in claim 12, characterized in that said overwrap includes at least two angularly disposed distinct windings of glass strands, said windings evenly distributed on said core, in spaced relation, forming a matrix of uniformly spaced non-conducting apertures.
- 14. The conductive roving defined in claim 13, characterized in that said strands are in tension to securely retain said glass fibers in a uniform cross-section.
- 15. The conductive roving defined in claim 14, characterized in that the thickness of said overwrap is about 0.005 to 0.010 inch.
- 16. The conductive roving defined in claim 14, characterized in that the longitudinal spacing between said windings of overwrap strands is about 1/16 to 3/16 inches.
- 17. In an elevated temperature ignition cable, the combination of a conductive core comprising a plurality of electrically conductive elongated glass fibers in a cylindrical bundle having a uniform cross-section, said glass fibers securely retained in said cylindrical bundle by at least two angularly disposed distinct windings of glass strands forming a non-conductive overwrap, said windings evenly distributed on said core, in spaced relation, forming a matrix of uniformly spaced non-conductive apertures, and a semi-conductive overcoat enclosing said core and overwrap, and substantially filling said apertures, said overcoat comprising a layer of polymerized tetrafluoroethylene having about 2 to 30 percent, by weight, fine particles of graphite suspended therein.
- 18. The ignition cable defined in claim 17, characterized in that said glass strands are in tension, about said conductive core, to assure uniform cross-section of said core.
- 19. The ignition cable defined in claim 17, characterized in that the spacing between said glass strands is about 1/16 to 3/16 inch measured longitudinally on said core between cross-over points.
- 20. The ignition cable defined in claim 17, characterized in that the thickness of said overwrap is about 0.005 to 0.010 inch.
- 21. In a method of manufacturing an insulated electrical conductor, the steps of: bundling a plurality of elongated flexible conductive fibers into a cylindrical core, uniformly winding under tension at least two distinct layers of non-conductive strands around said core (1) to securely bind said fibers into a cylindrical core having uniform cross-section and (2) to uniformly space said windings on said core to define a matrix of non-insulating apertures uniformly spaced axially and circumferentially on said core, and encasing said cylindrical core, non-conductive windings and apertures in a semi-conductive polymeric overcoat, said windings thereby providing uniform conductance between said core and said overcoat.
- 22. The method of manufacturing an insulated electrIcal conductor defined in claim 21, wherein said core and windings are encased within said semiconductive overcoat by dipping said core and windings in a mixture of polymerized tetrafluoroethylene and a conductive powder and curing said polymerized tetrafluoroethylene.
- 23. The method of manufacturing an insulated electrical conductor defined in claim 22, including the step of wiping the uncured polymerized tetrafluoroethylene mixture, prior to curing.
- 24. The method of manufacturing an insulated electrical conductor defined in claim 21, including individually winding strands of non-conductive glass around a core of conductive glass fibers.
- 25. An insulated electric cable comprising, in combination a conductive core including a plurality of flexible fibers, an overwrap containing said fibers in a cylindrical bundle comprising; at least two non-interlacing layers of non-conductive continuous linear elements uniformly wound under tension in tight retaining relation about said core fibers and providing a porosity of substantially uniform magnitude along the length of said overwrap, and a semiconductive overcoat of flexible material permeating said overwrap and communicating with said cylindrical conductive core such that a substantially uniform conductance is established between the semiconductive overcoat material and conductive core along its length.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00322311A US3818412A (en) | 1973-01-10 | 1973-01-10 | Electric conductor and method |
CA187,304A CA995316A (en) | 1973-01-10 | 1973-12-04 | Electric conductor and method |
DE2400174A DE2400174A1 (en) | 1973-01-10 | 1974-01-03 | ELECTRICAL CONDUCTOR |
IT19096/74A IT1006728B (en) | 1973-01-10 | 1974-01-04 | ELECTRICAL CONDUCTOR AND METHOD FOR ITS MANUFACTURING |
BR63/74A BR7400063D0 (en) | 1973-01-10 | 1974-01-08 | HOODED DUCTOR; IGNICAO CABLE; PROCESS FOR THE MANUFACTURE OF AN ISOLATED ELECTRIC CONDUCTOR ISOLATED ELECTRIC CONDUCTOR; INSULATED ELECTRIC CABLE; MECHA C0 |
NL7400265A NL7400265A (en) | 1973-01-10 | 1974-01-08 | |
GB110474A GB1432071A (en) | 1973-01-10 | 1974-01-09 | Electric conductor and method |
BE139660A BE809563A (en) | 1973-01-10 | 1974-01-09 | ELECTRICAL CONDUCTOR |
FR7400682A FR2324099A1 (en) | 1973-01-10 | 1974-01-09 | ELECTRICAL CONDUCTOR |
JP49006314A JPS49109880A (en) | 1973-01-10 | 1974-01-10 | |
US05/480,438 US4014722A (en) | 1973-01-10 | 1974-06-17 | Method of making electric conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00322311A US3818412A (en) | 1973-01-10 | 1973-01-10 | Electric conductor and method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/480,438 Continuation-In-Part US4014722A (en) | 1973-01-10 | 1974-06-17 | Method of making electric conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
US3818412A true US3818412A (en) | 1974-06-18 |
Family
ID=23254320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00322311A Expired - Lifetime US3818412A (en) | 1973-01-10 | 1973-01-10 | Electric conductor and method |
Country Status (10)
Country | Link |
---|---|
US (1) | US3818412A (en) |
JP (1) | JPS49109880A (en) |
BE (1) | BE809563A (en) |
BR (1) | BR7400063D0 (en) |
CA (1) | CA995316A (en) |
DE (1) | DE2400174A1 (en) |
FR (1) | FR2324099A1 (en) |
GB (1) | GB1432071A (en) |
IT (1) | IT1006728B (en) |
NL (1) | NL7400265A (en) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973234A (en) * | 1974-10-08 | 1976-08-03 | Universal Oil Products Company | Precision type resistor |
US3991397A (en) * | 1974-02-06 | 1976-11-09 | Owens-Corning Fiberglas Corporation | Ignition cable |
US4014722A (en) * | 1973-01-10 | 1977-03-29 | Owens-Corning Fiberglas Corporation | Method of making electric conductor |
US4070215A (en) * | 1974-06-17 | 1978-01-24 | Owens-Corning Fiberglas Corporation | Method and apparatus for making electric conductor |
US4626618A (en) * | 1984-05-08 | 1986-12-02 | Fujikura Ltd. | DC electric power cable |
US4704596A (en) * | 1986-11-19 | 1987-11-03 | Essex Group, Inc. | Extrusion coated ignition wire |
US4894490A (en) * | 1986-12-27 | 1990-01-16 | Sumitomo Wiring Systems, Ltd. | High tension cable and method of manufacture thereof |
US5476580A (en) * | 1993-05-17 | 1995-12-19 | Electrochemicals Inc. | Processes for preparing a non-conductive substrate for electroplating |
US5690805A (en) * | 1993-05-17 | 1997-11-25 | Electrochemicals Inc. | Direct metallization process |
US5725807A (en) * | 1993-05-17 | 1998-03-10 | Electrochemicals Inc. | Carbon containing composition for electroplating |
US6054028A (en) * | 1996-06-07 | 2000-04-25 | Raychem Corporation | Ignition cables |
US6171468B1 (en) | 1993-05-17 | 2001-01-09 | Electrochemicals Inc. | Direct metallization process |
US6303181B1 (en) | 1993-05-17 | 2001-10-16 | Electrochemicals Inc. | Direct metallization process employing a cationic conditioner and a binder |
US6710259B2 (en) | 1993-05-17 | 2004-03-23 | Electrochemicals, Inc. | Printed wiring boards and methods for making them |
US20040200634A1 (en) * | 2003-04-07 | 2004-10-14 | Midcon Cables Co., Llc | Shielded electrical wire construction and method of manufacture |
EP1664810A1 (en) * | 2003-09-11 | 2006-06-07 | Eurocopter | Method and device for detecting defects of electromagnetic protection for electric harnesses |
US20080218054A1 (en) * | 2007-03-08 | 2008-09-11 | International Business Machines Corporation | Carbon tube for electron beam application |
US20090184107A1 (en) * | 2001-09-03 | 2009-07-23 | Michael Weiss | Heating element with stranded contact |
US20090317038A1 (en) * | 2008-03-28 | 2009-12-24 | Kachmar Wayne M | Multi-fiber fiber optic cable |
US20110068098A1 (en) * | 2006-12-22 | 2011-03-24 | Taiwan Textile Research Institute | Electric Heating Yarns, Methods for Manufacturing the Same and Application Thereof |
US8390324B2 (en) | 2010-09-20 | 2013-03-05 | Honeywell International Inc. | Universal functionality module |
US20160161345A1 (en) * | 2014-12-09 | 2016-06-09 | Kidde Technologies Inc. | Eutectic based continuous thermal sensing element including fiber wrapped center conductor |
CN106910549A (en) * | 2017-03-23 | 2017-06-30 | 福建甲子信息技术股份有限公司 | A kind of polytetrafluoroethylene (PTFE)/graphene wire and preparation method thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870987A (en) * | 1973-05-29 | 1975-03-11 | Acheson Ind Inc | Ignition cable |
DE9206558U1 (en) * | 1992-05-14 | 1992-07-30 | Ernst + Engbring Gmbh, 4353 Oer-Erkenschwick, De | |
DE19828501C2 (en) * | 1998-06-26 | 2001-10-04 | Eilentropp Kg | Electrical high-voltage line |
AT519639A1 (en) * | 2017-01-26 | 2018-08-15 | Edlmair Kunststofftechnik Gmbh | Earthing conductors and their use in wet electrostatic precipitators |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3166688A (en) * | 1962-11-14 | 1965-01-19 | Ronald P Rowand | Polytetrafluoroethylene tubing having electrically conductive properties |
US3284751A (en) * | 1963-10-11 | 1966-11-08 | Eltra Corp | Resistor ignition lead |
US3463871A (en) * | 1965-05-27 | 1969-08-26 | Philadelphia Insulated Wire Co | Strippable insulated electrical wire |
US3553349A (en) * | 1968-04-06 | 1971-01-05 | Messerschmitt Boelkow Blohm | Flexible signal transmission cable |
US3644866A (en) * | 1971-01-11 | 1972-02-22 | Owens Corning Fiberglass Corp | Tightly bound bundle of filaments and method of producing same |
-
1973
- 1973-01-10 US US00322311A patent/US3818412A/en not_active Expired - Lifetime
- 1973-12-04 CA CA187,304A patent/CA995316A/en not_active Expired
-
1974
- 1974-01-03 DE DE2400174A patent/DE2400174A1/en active Pending
- 1974-01-04 IT IT19096/74A patent/IT1006728B/en active
- 1974-01-08 BR BR63/74A patent/BR7400063D0/en unknown
- 1974-01-08 NL NL7400265A patent/NL7400265A/xx not_active Application Discontinuation
- 1974-01-09 GB GB110474A patent/GB1432071A/en not_active Expired
- 1974-01-09 BE BE139660A patent/BE809563A/en unknown
- 1974-01-09 FR FR7400682A patent/FR2324099A1/en not_active Withdrawn
- 1974-01-10 JP JP49006314A patent/JPS49109880A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3166688A (en) * | 1962-11-14 | 1965-01-19 | Ronald P Rowand | Polytetrafluoroethylene tubing having electrically conductive properties |
US3284751A (en) * | 1963-10-11 | 1966-11-08 | Eltra Corp | Resistor ignition lead |
US3463871A (en) * | 1965-05-27 | 1969-08-26 | Philadelphia Insulated Wire Co | Strippable insulated electrical wire |
US3553349A (en) * | 1968-04-06 | 1971-01-05 | Messerschmitt Boelkow Blohm | Flexible signal transmission cable |
US3644866A (en) * | 1971-01-11 | 1972-02-22 | Owens Corning Fiberglass Corp | Tightly bound bundle of filaments and method of producing same |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4014722A (en) * | 1973-01-10 | 1977-03-29 | Owens-Corning Fiberglas Corporation | Method of making electric conductor |
US3991397A (en) * | 1974-02-06 | 1976-11-09 | Owens-Corning Fiberglas Corporation | Ignition cable |
US4070215A (en) * | 1974-06-17 | 1978-01-24 | Owens-Corning Fiberglas Corporation | Method and apparatus for making electric conductor |
US3973234A (en) * | 1974-10-08 | 1976-08-03 | Universal Oil Products Company | Precision type resistor |
US4626618A (en) * | 1984-05-08 | 1986-12-02 | Fujikura Ltd. | DC electric power cable |
US4704596A (en) * | 1986-11-19 | 1987-11-03 | Essex Group, Inc. | Extrusion coated ignition wire |
US4894490A (en) * | 1986-12-27 | 1990-01-16 | Sumitomo Wiring Systems, Ltd. | High tension cable and method of manufacture thereof |
US5690805A (en) * | 1993-05-17 | 1997-11-25 | Electrochemicals Inc. | Direct metallization process |
US7186923B2 (en) | 1993-05-17 | 2007-03-06 | Electrochemicals, Inc. | Printed wiring boards and methods for making them |
US5725807A (en) * | 1993-05-17 | 1998-03-10 | Electrochemicals Inc. | Carbon containing composition for electroplating |
US6171468B1 (en) | 1993-05-17 | 2001-01-09 | Electrochemicals Inc. | Direct metallization process |
US6303181B1 (en) | 1993-05-17 | 2001-10-16 | Electrochemicals Inc. | Direct metallization process employing a cationic conditioner and a binder |
US6710259B2 (en) | 1993-05-17 | 2004-03-23 | Electrochemicals, Inc. | Printed wiring boards and methods for making them |
US20040084321A1 (en) * | 1993-05-17 | 2004-05-06 | Thorn Charles Edwin | Printed wiring boards and methods for making them |
US5476580A (en) * | 1993-05-17 | 1995-12-19 | Electrochemicals Inc. | Processes for preparing a non-conductive substrate for electroplating |
US6054028A (en) * | 1996-06-07 | 2000-04-25 | Raychem Corporation | Ignition cables |
US20090184107A1 (en) * | 2001-09-03 | 2009-07-23 | Michael Weiss | Heating element with stranded contact |
US20040200634A1 (en) * | 2003-04-07 | 2004-10-14 | Midcon Cables Co., Llc | Shielded electrical wire construction and method of manufacture |
EP1664810A1 (en) * | 2003-09-11 | 2006-06-07 | Eurocopter | Method and device for detecting defects of electromagnetic protection for electric harnesses |
US7391220B2 (en) * | 2003-09-11 | 2008-06-24 | Eurocopter | Method and device for detecting defects of electromagnetic protection for electric harnesses |
US20070036081A1 (en) * | 2003-09-11 | 2007-02-15 | Serge Vallet | Method and device for detecting defects of electromagnetic protection for electric harnesses |
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Also Published As
Publication number | Publication date |
---|---|
FR2324099A1 (en) | 1977-04-08 |
IT1006728B (en) | 1976-10-20 |
JPS49109880A (en) | 1974-10-18 |
BR7400063D0 (en) | 1974-08-15 |
CA995316A (en) | 1976-08-17 |
DE2400174A1 (en) | 1974-07-18 |
GB1432071A (en) | 1976-04-14 |
BE809563A (en) | 1974-05-02 |
NL7400265A (en) | 1974-07-12 |
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