Covering Of Conductor Patents (Class 156/51)
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Patent number: 6921445Abstract: A method involves sheathing a superconductor with a thermoplastic insulation material on all sides. The conductor exits a guide channel that extends in the propulsion direction. A melt hose is extruded from the molten insulation material in the propulsion direction and through a nozzle that has an outlet which embraces the conductor, whereby a distance is kept on all sides. The melt hose is stretched via the propulsion of the conductor. The hose is drawn to the surface of the conductor and is compacted by cooling. The method can especially be used for sheathing band-shaped high-Tc-superconductors. Materials having processing temperatures between 200° C. and 450° C., are selected as thermoplastic insulation materials.Type: GrantFiled: January 30, 2001Date of Patent: July 26, 2005Assignee: Siemens AktiengesellschaftInventors: Cord Albrecht, Robert Greiner, Peter Kummeth, Peter Massek, Manfred Ochsenkühn
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Patent number: 6912777Abstract: A helical corrugated coaxial cable possesses low cost of manufacture comparable to that of braided shield coaxial cable, electrical performance comparable to solid tubular shielded cable, flexibility of helical and annular corrugated cable, and fluid blockage comparable to annular shielded cable. The cable has an inner conductor surrounded by a foam dielectric insulator. A tubular shield surrounds the dielectric and has helical corrugations penetrating into and compressing the foam dielectric to effectively suppress the formation of fluid migration air gaps or passageways between the shield and the dielectric. The shield is preferably composed of aluminum or aluminum alloy. Alternatively, the shield may be annularly corrugated for improved water blocking performance. The manufacturing process employs high speed welding and multi-lead corrugating operations to reduce cost.Type: GrantFiled: November 14, 2002Date of Patent: July 5, 2005Assignee: Andrew CorporationInventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
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Patent number: 6894682Abstract: Improves the connection between a touch panel and an external harness. A first electrode cable (11) and a third electrode cable (13) are disposed on a first ITO film (20) on a glass substrate (10) of a touch panel, and a second electrode cable (12) and a fourth electrode cable (14) are disposed on a second ITO film (60) on a flexible resin (50). First to fourth guide conductors (31 to 34) are disposed in parallel on a first insulation layer (30) that is provided near a first side (10a) of the glass substrate. The first to fourth electrode cables are connected to the first to fourth guide conductors, via first to fourth connection conductors (21 to 24). A second insulation layer (40) is laminated on them. On a connection section (6) of an external harness (4), first to fourth external conductors (81 to 84) have their coating removed at the touch panel side, and are superimposed with the plurality of guide conductors of the touch panel so that they cross each other.Type: GrantFiled: February 27, 2003Date of Patent: May 17, 2005Assignee: Fujitsu Component LimitedInventors: Takashi Nakajima, Mitsuaki Nakazawa, Kazuyuki Yoshifusa
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Patent number: 6869493Abstract: The present invention relates to an apparatus for manufacturing wire having an inverted cone-shaped cylinder within a spool, wherein the diameter of the top end of the cylinder is larger than the lower end thereof enabling a tape wound thereon unwound from the spool to go from a lower position to a higher position of the cylinder while the tape being wrapped on the wire due to the centrifugal force of rotation in the wrapping process. This has the benefit of preventing the subsequent turns of the tape from loosening out of the spool, and enables the tape being continuously, evenly, and securely wrapped on the wire in a high speed operation.Type: GrantFiled: May 28, 2002Date of Patent: March 22, 2005Inventor: Cheng-Lang Tsai
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Patent number: 6843870Abstract: The present invention is an implantable cable and a process to manufacture said implantable cable. The cable is composed of a biocompatible fluoropolymer, in which biocompatible conductor wires are embedded. The entire cable is heat treated at various stages to ensure the wires are securely embedded. The cable is then undulated to enhance its pliability and flexibility. Further treatment activates the outer surface of the cable, following which it may be encapsulated in silicone.Type: GrantFiled: July 22, 2003Date of Patent: January 18, 2005Assignee: Epic Biosonics Inc.Inventor: Henry Bluger
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Publication number: 20040166190Abstract: The present invention concerns a process for producting cables, in particular cables for the distribution of electrical energy or cables for telecommunications, more particularly, cables having at least one covering layer comprising a composition of high viscosity. More particularly, the present invention concerns cables having at least one covering layer comprising a polymeric composition comprising a mineral filler capable of imparting one or more specific properties to the aforesaid cables. In accordance with the present invention, said production process comprises the stages of: conveying at least one conducting element inside of an extruder; feeding the polymeric material, optionally premixed with other components of said composition, into said extruder, filtering the material transferred and plasticized by the screw of said extruder; depositing said material onto said at least one conducting element, the filtration operation being performed with a filtration efficiency greater than 0.Type: ApplicationFiled: February 27, 2004Publication date: August 26, 2004Applicant: Pirelli Cavi E Sistemi S.P.A.Inventors: Sergio Belli, Angelo Giuseppe Locatelli, Giovanni Pozzati, Paolo Veggetti
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Publication number: 20040144471Abstract: A method for the manufacture of a cable having at least one conductor and at least one sheath surrounding the conductor which is made of an insulating plastic material, wherein the plastic material is applied to the conductor by extrusion and is subsequently cross-linked or cured in a tube-like envelope by supplying heat thereto, wherein a tube-shaped or hose-shaped envelope is continuously produced around the cable sheath in an intimate contact with or at a radial distance therefrom after said extrusion, which envelope is adapted to ensure the counterpressure required for the cross-linking or curing process in the cable sheath.Type: ApplicationFiled: December 8, 2003Publication date: July 29, 2004Inventor: Harald Sikora
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Patent number: 6689446Abstract: A method of producing a vehicle panel. The method comprises the steps of: laying wire on a first sheet of thermoplastic or thermoset composite material in a desired configuration; placing or forming a second sheet of thermoplastic or thermoset material on the first sheet of material thereby sandwiching the wire; and, pressing the sheets together so that they encase and insulate the wire, wherein the wire is left exposed at connection points formed by apertures in the sheets. A vehicle panel made according to the method is also disclosed.Type: GrantFiled: May 1, 2002Date of Patent: February 10, 2004Assignees: Yazaki Corporation, BI Composites LimitedInventors: Timothy Ronald Barnes, Michael Ian Birrell
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Publication number: 20030230371Abstract: A method and device for the production of flat ribbon cables is disclosed, in which several metallic conductors are provided one next to the other and spaced apart in one or more planes, within a synthetic material sheath. The electrical conductors are placed on a ribbon-shaped base and secured with a curing synthetic material melt, so that the synthetic material film that lies in the gap between a roller and a shape molding causes the metallic electrical conductors to join and combine into one composite product. This intermediate product is then, within the same gap between roller and shape molding, joined and coated with a synthetic material compound in a plastic state with the result that the conductors are ensheathed on all sides.Type: ApplicationFiled: March 25, 2003Publication date: December 18, 2003Inventor: Bernd Pielsticker
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Patent number: 6631559Abstract: A process for forming a cable by intermittently feeding flat cables in a common direction and transporting the cables in parallel in a common direction to a heat bonding device. The side edges of the flat cables are heat bonded in a heat bonding device over a predetermined length, the heat bonded flat cables are taken up in synchronization with the transporting thereof and the flat cables are cut at predetermined times.Type: GrantFiled: April 3, 2001Date of Patent: October 14, 2003Assignee: The Furukawa Electric Co., Ltd.Inventor: Seiichi Ueno
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Publication number: 20030168245Abstract: An electrical cable and a method for manufacturing the electrical cable are provided in which a plurality of insulated conductors have an inner protective layer extruded thereabout. A plurality of longitudinally extending ribs or fins or exterior ribbed or finned surfaces are formed outward of the inner protective layer between which exist a plurality of voids. An outer insulation layer can be formed in the same operation as the fins or ribbed surface and the inner layer or in a subsequent operation.Type: ApplicationFiled: February 11, 2003Publication date: September 11, 2003Inventors: Stephen Lee Spruell, Scott Mitchell Robertson, John Nicholas Ware, David Reece
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Patent number: 6573456Abstract: An electrical cable and a method for manufacturing the electrical cable are provided in which a plurality of conductors have an inner protective layer extruded thereabout, a ribbed or finned surface exterior thereto which includes a plurality of longitudinally extending ribs or fins between which exist a plurality of channel regions, an outer insulation layer thereabout, and a material within the channel regions which provides self-sealing properties to the cable, all applied to the conductor as a combined multilayer, the inner layer and outer layer merging to form the fins therebetween.Type: GrantFiled: May 8, 2001Date of Patent: June 3, 2003Assignee: Southwire CompanyInventors: Stephen Lee Spruell, Scott Mitchell Robertson, John Nicholas Ware, Jr.
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Patent number: 6521065Abstract: A sealant applicator 1 is provided for applying a waterproofing treatment to a wire assembly, a plurality of wires are aligned in a line according to their diameters in a holder 4 provided on a wire laying board 3. Positioning members 21 of a main unit 2 are fitted to the holder 4. A pair of nozzles 22 are opposed to each other at the opposite sides of the aligned wires, and is caused to discharge a specified amount of the sealant by a feeding mechanism 26 while being moved in a wire alignment direction by a moving mechanism 27 and being brought closer to the wires by a relatively moving mechanism 25. This enables a variation of clearances between the wires and the nozzles to be reduced and the sealant to be uniformly applied.Type: GrantFiled: July 5, 2000Date of Patent: February 18, 2003Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Hisato Chujo, Koshi Abe, Hirotaka Baba, Kenichi Uchiyama
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Publication number: 20020189735Abstract: A method of manufacturing a rubber reinforcing steel cord is provided, wherein the steel cord has a steel wire plated with metal containing copper and having on its surface an oil layer containing a cobalt compound, and includes an application step in which the oil containing a cobalt compound is applied to the steel wire or a steel cord plated with metal containing copper, and a step of twisting the steel wires.Type: ApplicationFiled: May 31, 2002Publication date: December 19, 2002Inventors: Shinichi Miyazaki, Osamu Toda, Yasuo Sakai
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Publication number: 20020106307Abstract: A sensor is disclosed that comprises an electrolyte disposed between and in intimate contact with a sensing electrode and a reference electrode. A protective coating is disposed on the protective layer adjacent to the sensing electrode. The protective coating comprises a mixture of a metal oxide, a zeolite, and an alumina. A method for making the sensor is also disclosed.Type: ApplicationFiled: December 19, 2000Publication date: August 8, 2002Inventors: Eric P. Clyde, Paul Kikuchi, Richard F. Beckmeyer, William J. Labarge
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Publication number: 20020084012Abstract: A method of manufacturing a guidewire having a discrete length. The method includes the steps of feeding a first end of a corewire into an extrusion device, gripping the first end of the corewire with a gripping apparatus, and extruding a first extrusion material onto an outer surface of the corewire while the gripping apparatus pulls the corewire through the extrusion device to form an extrusion jacket on the outer surface of the corewire. The corewire has a predetermined length corresponding to a length of the guidewire.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Applicant: Scimed Life Systems,Inc.Inventors: Matthew Solar, Richard Acevedo, Eric Welch, Scott Jones
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Patent number: 6414596Abstract: The present invention relates to a security element for electronic article surveillance, comprising two at least partially overlapping layers of conductor strips interconnected by a dielectric adhesive coating. This arrangement reduces the risk of reactivation after activation is once effected. To achieve this, the upper layer and the lower layer of conductor strips have at least one turn, and that the strength of the two layers of overlapping conductor strips is so high as to cause the security element to bend, if subjected to mechanical strain, in those areas which are essentially devoid of conductor strips.Type: GrantFiled: May 4, 1999Date of Patent: July 2, 2002Assignee: Meto International GmbHInventors: Richard Altwasser, Peter Lendering
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Patent number: 6296725Abstract: Disclosed is a method for surrounding electrical cable, such as coax cable or twinax cable, with an elastomer to form a twist capsule cable. The cables are placed in a fixture and stretched to a desired tautness using rubber bands at opposite ends of each cable without allowing the cables to sag in the fixture. The cables are clamped into yokes at opposite ends of the fixture. An elastomer, such as silicone, is poured into the fixture and allowed to cure. The portion of the cables within the fixture are embedded into the elastomer after the elastomer cures. Additional length of twist capsule cable can be fabricated by performing a similar process on adjoining sections of cable. The elastomer is then coated with a polyxylylene or similar polymer such as Parylene™ to prevent the elastomer from rubbing on itself when coiled and when uncoiling. Advantageously, any number of cables can be embedded in the elastomer to form the twist capsule cable.Type: GrantFiled: September 17, 1999Date of Patent: October 2, 2001Assignee: Litton Systems, Inc.Inventors: Glenn Lawson, Tyrone Trenor, Anthony Lee Bowman
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Patent number: 6273977Abstract: A method for making cable of at least two thermoplastic insulated electrical conductors by thermal bonding. Two electrical conductors are moved into an extruder and are coated independently with heated thermoplastic insulation which maintains concentricity of each conductor with respect to the surrounding insulation. The insulated conductors are held in a spaced relationship until the insulation sets and then the heated insulated conductors are touched together causing the heated insulation to fuse together thereby joining them.Type: GrantFiled: April 13, 1995Date of Patent: August 14, 2001Assignee: Cable Design Technologies, Inc.Inventors: Scott W. Harden, David R. Harden
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Patent number: 6243946Abstract: An interlayer connection structure in a circuit board characterized in that a local part of a conductive circuit layer disposed at one surface side of an insulative sheet is bent inwardly of the insulative sheet so that an apex of a projectingly bent portion is formed, and the apex of the projectingly bent portion is abutted with another conductive circuit layer disposed at the other surface side of the insulative sheet so that an interlayer connection is established therebetween.Type: GrantFiled: April 11, 1997Date of Patent: June 12, 2001Assignee: Yamaichi Electronics Co., Ltd.Inventors: Etsuji Suzuki, Akira Yonezawa, Hidehisa Yamazaki
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Patent number: 6221503Abstract: A paste is described for capping electrodes with an oxide free metal layer incorporating a solvent, an unzippable polymer and particles. The electrode could be an interconnect such as a C4 bump. A method for forming a coating and for testing integrated circuit chips is also described. The invention overcomes the problem of interconnecting Pb containing electrodes that are covered with an insulating oxide on integrated circuit chips by coating the Pb containing electrode with Au to provide an oxide free surface for testing and interconnection.Type: GrantFiled: August 24, 1999Date of Patent: April 24, 2001Assignee: International Business Machines CorporationInventors: John Michael Cotte, Judith Marie Roldan, Carlos Juan Sambucetti, Ravi F. Saraf
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Patent number: 6101804Abstract: A method of and an apparatus for making twisted electrical cable, such as 600 volt secondary distribution (UD) cable, and the twisted cable product are disclosed. The apparatus comprises a first plurality of stationary payoff reels each wound with a length of stranded bare wire conductor. The stranded conductors are simultaneously payed off the reels to a pay out accumulator for accumulating a portion of the stranded conductors during replacement of spent pay out reels. An extruder apparatus arranged downstream of the accumulator applies a plastic insulation material to a respective stranded conductor as it passes through the extruder. A cooling trough through which water is flowed cools the plastic insulation. A take-up accumulator arranged downstream of the cooling trough accumulates a portion of each insulated conductor during changeover of the take-up arranged downstream of the take-up accumulator.Type: GrantFiled: August 25, 1998Date of Patent: August 15, 2000Assignee: Southwire CompanyInventors: Bobby C. Gentry, Jerry M. Hesterlee, Clinton E. Watkins, James H. Sullivan
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Patent number: 6096978Abstract: A flat cable having a metal conductors enclosed by a flexible insulation sheath. The conductors are flat and in a side by side orientation in the lateral direction and the conductors are provided with bends which enable a substantial increase in the length of the conductors upon extending the insulation sheath without breaking the conductors. The conductors are also provided at certain distances with short straight conductor sections that are oriented closer to the external surface of the flexible insulation sheath. The insulation sheath is constituted by an inner insulation which surrounds the conductors and a harder, outer insulation which serves as an actual protective cable sheath.Type: GrantFiled: December 18, 1998Date of Patent: August 1, 2000Assignee: Oy IWS International Inc.Inventor: Jorma Pohjola
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Patent number: 6090231Abstract: An electric wire-connecting portion (11) is formed by connecting together conductive ends of a plurality of electric wires (W). One end of a heat shrinkable tube (12) is sealed with hot melt adhesive (15). The heat shrinkable tube (12) is attached onto the electric wire-connecting portion (11). A tube holding tool (13) for protecting the one end of the heat shrinkable tube (12) against heat is attached to the one end of the heat shrinkable tube (12). The heat shrinkable tube (12) is heated to shrink thereby sealing the electric wire-connecting portion (11). The tube holding tool (13) includes a holding portion (13a) for holding the one end of the heat shrinkable tube (12), and a shaft portion (13b) integrally formed with the holding portion (13a).Type: GrantFiled: December 14, 1998Date of Patent: July 18, 2000Assignee: Yazaki CorporationInventor: Takahiro Saito
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Patent number: 6054224Abstract: An electrical insulating polyester film has an apparent density of 1.37 to 0.85 g/cm.sup.3 and a tensile modulus of 2.0 to 4.5 GPa.A film having low oligomer content, low cost, high heat resistance, high impact resistance, superior machinability and processability, assembling stability, and superior visibility is obtained. Furthermore, leakage of current is reduced when it is used for motor insulation.Type: GrantFiled: May 6, 1999Date of Patent: April 25, 2000Assignee: Toray Industries, Inc.Inventors: Itsuo Nagai, Seizo Aoki, Yukichi Deguchi
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Patent number: 5985062Abstract: The process calls for extrusion of a multilayer tubular structure with semiconducting innermost layer. In production of the sleeve the inner layer is partially removed leaving only a central portion forming an electrode. In addition the intermediate layer is made with a compound having pre-determined relative dielectric constant and dielectric rigidity.Type: GrantFiled: November 24, 1997Date of Patent: November 16, 1999Assignee: Pirelli Cavi S.p.A.Inventors: Ubaldo Vallauri, Francesco Portas
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Patent number: 5976284Abstract: Patterned conducting polymer surfaces exhibiting excellent properties may be prepared by:(a) forming a surface of a conducting polymer on a surface of a substrate;(b) forming a surface of a blocking material on said surface of said conducting polymer in a pattern-wise fashion, to obtain a first patterned surface containing regions of exposed conducting polymer and regions of blocking material;(c) treating said first patterned surface with an agent which: (i) removes said conducting polymer from said regions of exposed conducting polymer; (ii) decreases the conductivity of said conducting polymer in said regions of exposed conducting polymer; or (iii) increases the conductivity of said conducting polymer in said regions of exposed conducting polymer; and(d) removing said blocking material to obtain a second patterned surface containing an exposed pattern of conducting polymer.Type: GrantFiled: May 12, 1997Date of Patent: November 2, 1999Assignees: The United States of America as represented by the Secretary of the Navy, Geo-Centers, Inc.Inventors: Jeffrey M. Calvert, Terrence G. Vargo, Ranganathan Shashidhar, Mu-San Chen
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Patent number: 5922155Abstract: A method of manufacturing an insulative material cellular insulator around a conductor, the insulator having a longitudinal passage in which the conductor is housed and closed cells extending longitudinally and separated from each other by radial walls, includes the following operations: the insulative material in the viscous state is extruded to impart the required shape to it to form the cells, the insulative material shaped in this way is applied to the conductor, and the insulative material is cooled to obtain the insulator. The insulative material is applied to the conductor at a distance from the exit of the shaping device such that the material is drawn down sufficiently for the walls of the cells not to be thinned without pressurizing the cells.Type: GrantFiled: April 22, 1997Date of Patent: July 13, 1999Assignee: FilotexInventors: Pascal Clouet, Jean-Jacques Maisseu, Francois Vaille, Alain Vernanchet
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Patent number: 5916397Abstract: The present invention relates to a method of manufacturing an insulator made of a composite material and including a cylindrical casing provided with annular fins. The method includes the steps of manufacturing an epoxy resin cylinder provided with epoxy resin annular fins covering the resulting cylinder with a covering of a material that withstands the electrical potential gradient under atmospheric conditions.Type: GrantFiled: June 17, 1996Date of Patent: June 29, 1999Assignee: Gec Alsthom T & D SAInventor: Edmond Thuries
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Patent number: 5888323Abstract: A waterproof cable having a plurality of conductive strands which are twisted together to form a wire core which is surrounded by an insulation layer. A water-absorptive swellable powder is applied to the individual strands prior to twisting and thereby is introduced into the interstices between adjacent strands. If water attempts to enter the spaces between the strands, it is absorbed by the powder which swells to occupy all the space and thereby seals the cable against further water penetration. The cable is produced by application (e.g. by spraying) of a solution of the powder in a solvent to the individual strands. Thereafter, the solvent is evaporated, leaving the powder adhered to the strand surfaces. In a preferred form of the Invention, regions containing the powder are longitudinally spaced apart from adjacent regions having no powder therein. In a more preferred form of the Invention, the powder is removed from the outer surface of the wire core prior to coating with insulation.Type: GrantFiled: August 11, 1997Date of Patent: March 30, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Jun Yasukuni, Takashi Itoh
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Patent number: 5873160Abstract: An electrical power cable includes plastic-insulated conductors and a single wire, which is enveloped by a lengthwise incoming insulating tape and is twisted together with the conductors, all of which are surrounded by a common sheath. The conductors and the single wire are twisted together with alternating stroke directions (SZ), and the tape sheath is loosely placed around the single wire in the form of a strand with opposing edges of the tape having alternating directions of rotation along the length of the strand.Type: GrantFiled: October 11, 1995Date of Patent: February 23, 1999Assignee: Frisch Kabel-und Verseilmaschinenbau GmbHInventor: Friedhelm Kumpf
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Patent number: 5807447Abstract: System neutral to earth grounding, over the entire length of an electrical cable is achieved by adding one or more strips of semi-conductive material over the helically or otherwise wound concentric neutral conductors and completing the cable jacket with insulating material. The strip engages the soil when buried to provide a continuous ground path for the neutral conductors. In a second form protrusions of semi-conductive material project from a semi-conductive layer and encircle certain of the neutral conductors while the remainder are partially surrounded by the semi-conductive layer. Insulating material segments complete the cable jacket. The free ends of the protrusions engage the soil about the cable to provide a continuous ground for the neutral conductors helically wound or extending in parallel with the cable longitudinal axis.Type: GrantFiled: October 16, 1996Date of Patent: September 15, 1998Assignee: Hendrix Wire & Cable, Inc.Inventor: Ian W. Forrest
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Patent number: 5744237Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.Type: GrantFiled: June 10, 1996Date of Patent: April 28, 1998Assignee: Hoechst Celanese CorporationInventor: Harry W. Stanhope
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Patent number: 5708235Abstract: Armored cable sheath is coded for easy visual identification by applying patterns, e.g., colored patterns, along the length of the cable. The sheath may be formed of a helically interlocked continuous strip of metal, or of smooth or corrugated continuous metal tubing. The patterns are applied on the outer surface of the sheath and are repeated along the length of the sheath.Type: GrantFiled: September 11, 1996Date of Patent: January 13, 1998Assignee: WPFY, Inc.Inventors: James W. Falciglia, Anthony J. Mauro
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Patent number: 5670208Abstract: A PC strand is coated with rust inhibitive material of thermoplastic resin so as to wholly close spaces left around a core and peripheral wires twisted around the core, thus preventing the core and wires from rusting. The strand coated with the rust inhibitive material can be produced without being untwisted by use of an extruding machine having an auxiliary pressure head connected to a cross head.Type: GrantFiled: December 12, 1994Date of Patent: September 23, 1997Assignees: Hien Electric Industries, Times Eng., Ltd.Inventors: Kazuyoshi Chikiri, Yukihiro Higashi
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Patent number: 5658406Abstract: Method of making a twisted conductor wire unit in which each wire of the pair is individually insulated. The twisted pair is provided with an outer extruded polymeric layer while a vacuum is applied to the pair at the extrusion position. The vacuum draws the polymeric layer down onto the pair and forces the insulated wires together along the length of the unit. The vacuum is insufficient to produce substantial longitudinal indentations in the polymer layer. This avoids spaces being provided between the insulated wires in the finished structure and provides a substantially constant distance between the wires to improve electrical and cross-talk characteristics.Type: GrantFiled: November 17, 1994Date of Patent: August 19, 1997Assignee: Nordx/CDT, Inc.Inventors: Jorg-Hein Walling, Gavriel L. Vexler, Clement Gagnon, Benoit Arpin
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Patent number: 5656371Abstract: An insulating composition comprising a syndiotactic polypropylene (s-PP) having a syndiotactic pentad ratio of not less than 0.7 and an MFR of 0.05-2.0 g/10 min. The composition of the present invention comprising a specific s-PP can provide an article having superior electric properties and mechanical properties. In particular, the article can retain superior electric properties and mechanical properties even after rapid cooling or gradual cooling for re-processing of said article. Accordingly, the composition of the present invention can be suitable used for insulating layer, coating layer of various power cables inclusive of high voltage wires and low voltage wires, coating layer of optical fibers and insulator of wire-connecting structures.Type: GrantFiled: June 27, 1995Date of Patent: August 12, 1997Assignees: Mitsubishi Cable Industries, Ltd., Mitsui Toatsu Chemicals, Inc.Inventors: Masaki Kawahigashi, Hiroshi Kato, Ryuichi Sugimoto, Nobutaka Uchikawa, Katsumi Yoshino
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Patent number: 5593524Abstract: A cable having a conductor for conducting electrical current, a first layer of insulation encircling the conductor for insulating the conductor, a mesh tape applied over the first layer of insulation for reinforcing the cable and substantially limiting the cable from stretching when the cable is placed in tension, and a second layer of insulation encircling and interwoven with the mesh tape. Also provided is a method for manufacturing the cable described above.Type: GrantFiled: November 14, 1994Date of Patent: January 14, 1997Inventor: Peter A. Philips
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Patent number: 5585979Abstract: A method and assembly are disclosed for bundling wires utilized in a head gimbal assembly of a magnetic disk storage device. According to the method of the present invention, a number of wires are routed along a predetermined path on a surface of the arm of the head gimbal assembly. While the wires are maintained along the predetermined path, an adhesive is dispensed at selected locations along the predetermined path. According to a preferred embodiment of the present invention, the adhesive is applied in a contiguous manner along the length of the wires extending beyond the end of the arm. Finally, the adhesive is cured to encapsulate a portion of the wires within a sleeve of adhesive. In an alternate embodiment of the present invention, the adhesive is dispensed over the wires in a plurality of non-contiguous segments.Type: GrantFiled: March 28, 1995Date of Patent: December 17, 1996Assignee: International Business Machines CorporationInventors: A. David Erpelding, Harald R. Lindner, Juergen Netzker, Thomas Steinbrenner
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Patent number: 5557071Abstract: Armored cable sheath is coded for easy visual identification by applying patterns, e.g., colored patterns, along the length of the cable.Type: GrantFiled: June 2, 1995Date of Patent: September 17, 1996Assignee: WPFY, Inc.Inventors: James W. Falciglia, Anthony J. Mauro
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Patent number: 5543000Abstract: A radiating cable comprises a core having a center conductor bonded to, centered in, and supported by discs of dielectric material. A sleeve of dielectric material is extruded over the discs and thereby bonded thereto to form a plurality of sealed, coaxial, dielectric chambers. A tubular outer conductor is bonded in concentric relation to the sleeve. In a continuous process, at least one slot is formed in the outer conductor by a cutting operation and an outer jacket is extruded over the outer conductor. In a preferred embodiment, the outer conductor is made of an aluminum tube and two circumferentially equally spaced slots are formed therein by removing between 10 and 35% of the aluminum material. The width of the resulting slots may be configured so that a joint is formed in the slot between the insulating sleeve and the outer jacket, thus obviating the use of adhesive in bonding the outer jacket to the cable.Type: GrantFiled: August 15, 1994Date of Patent: August 6, 1996Assignee: Trilogy Communications, Inc.,Inventor: Roger M. Lique
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Patent number: 5519173Abstract: A high speed telecommunication cable includes at least one filler member having a plurality of twisted pair conductors disposed about the periphery thereof. Preferably, a plurality of twisted pair conductors are helically wound about each of two filler members and form a single layer about each filler member.Type: GrantFiled: June 30, 1994Date of Patent: May 21, 1996Assignee: Berk-Tek, Inc.Inventors: Kerry Newmoyer, Eric Lawrence
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Patent number: 5504274Abstract: A lightweight braided metallic shielding is applied to wiring harnesses to protect against lightning strikes and electromagnetic interference (EMI). The braided shielding has an open braid construction which may be as much as 40% lighter in weight and which provides better electromagnetic shielding than conventional braided shielding. The decrease in weight is achieved by utilizing a braid carrier application angle, as measured from the axis of the wire harness, which is as small as about eighteen degrees, so as to produce a braided shield that has as few as four picks per inch. The ensuing braided shield is very flexible and results in a degree of wire harness coverage which may be as low as about 60%, but which exhibits low electrical resistance which contributes significantly to lightning protection and EMI shielding.Type: GrantFiled: September 20, 1994Date of Patent: April 2, 1996Assignee: United Technologies CorporationInventors: Brian L. McCabe, Edward L. Kirchner
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Patent number: 5494550Abstract: An improvement in a method for the manufacture of electronic surveillance tags by providing a continuous web of electrically insulative material, applying to opposed surfaces of the electrically insulative material web a succession of first and second electrically conductive coils and applying to the succession of first electrically conductive coils a normally electrically insulative deactivation structure extending across the first coil succession and convertible to be electrically conductive, the improvement comprising the step of providing an electrostatic charge drain in electrically conductive relation with each of the first electrically conductive coils substantially throughout the manufacture of the tags. The new step may be practiced by providing an elongate electrically conductive member across the succession of first electrically conductive coils in electrical continuity therewith.Type: GrantFiled: September 7, 1993Date of Patent: February 27, 1996Assignee: Sensormatic Electronics CorporationInventor: S. Eugene Benge
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Patent number: 5483020Abstract: A twin axial or parallel pair cable for high data rate differential signal transmission with extremely low skew. The cable has first and second plated electrical conductors which extend in substantially parallel relation to one another. Preferably the conductors are surrounded by first and second foamed fluoropolymer insulating dielectrics, respectively. The dielectrics and the conductors are surrounded by a braided metal shield of plated electrical conductors. The dielectrics insulate the conductors from each other and from the shield, and are sufficiently crush resistant to maintain the conductors in substantially parallel relation to one another over the length of the cable. The shield may be covered with an optional jacket.Type: GrantFiled: April 12, 1994Date of Patent: January 9, 1996Assignee: W. L. Gore & Associates, Inc.Inventors: William G. Hardie, Craig R. Theorin
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Patent number: 5468314Abstract: Improved insulative cable assemblies and methods for producing them are disclosed. The insulative cable assemblies comprise a conductor housed within a polymeric insulation layer expanded with expandable thermoplastic microspheres. The use of a relatively inelastic outside sheath controls the expansion of the insulative layer and assures a snug fit between the insulation and the conductor. The insulation layer is highly resilient and resistant to dielectric changes due to compression or damage from mechanical manipulation of the cable. Additionally, the ability to expand the insulative layer after cable assembly is completed provides far greater freedom in cable processing without compromising low dielectric constant.Type: GrantFiled: December 13, 1993Date of Patent: November 21, 1995Assignee: W. L. Gore & Associates, Inc.Inventors: Gordon L. McGregor, Raymond B. Minor, William Hardie, Michael Kennedy
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Patent number: 5468914Abstract: Armored cable sheath is coded for easy visual identification by applying patterns, e.g., colored patterns, along the length of the cable.Type: GrantFiled: October 19, 1993Date of Patent: November 21, 1995Assignee: Monogram Industries Inc.Inventors: James W. Falciglia, Anthony J. Mauro
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Patent number: 5461195Abstract: A cable having a thixotropic filling compound therein, the filling compound being a gel composition including a water absorbent hydrocarbon polymer with pendent anionic groups. The composition eliminates shorts caused by moisture contact with such wires. The cable including the composition is stabilized against thermally induced capacitance changes and shows improved oxidation induction times.Type: GrantFiled: November 12, 1993Date of Patent: October 24, 1995Assignee: Waterguard Industries, Inc.Inventors: Clarence S. Freeman, Lawrence E. Davis
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Patent number: 5430255Abstract: An electric wire or cable having at least one aluminum conductor with extruded insulation with or without a semiconducting extruded screen or screens has the surface of the metallic conductor textured to provide a mechanical interlock with extruded material applied closely to it. This reduces the effect of shrink-back when the wire or cable is cut back for termination or jointing, and may thus allow faster extrusion in manufacture.Type: GrantFiled: February 23, 1994Date of Patent: July 4, 1995Assignee: Phillips Cables LimitedInventors: Ian G. Downie, John W. Playford
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Patent number: RE38345Abstract: Armored cable sheath is coded for easy visual identification by applying patterns, e.g., colored patterns, along the length of the cable. The sheath may be formed of a helically interlocked continuous strip of metal, or of smooth or corrugated continuous metal tubing. The patterns are applied on the outer surface of the sheath and are repeated along the length of the sheath.Type: GrantFiled: January 13, 2000Date of Patent: December 16, 2003Assignee: WPFY, Inc.Inventors: James W. Falciglia, Anthony J. Mauro