With Filling Of Void Or Cavity With Fluent Material Patents (Class 156/48)
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Patent number: 7645408Abstract: A process for manufacturing an elastomeric sleeve of a joint for electrical cables. The sleeve has an electric field-control element, an electrical insulating element surrounding the electric field-control element, and at least a semiconductive element having two stress control screens. The process includes providing the electric field-control element and the two stress control screens on a supporting element; introducing the supporting element into a mold provided for molding the electrical insulating element; filling with the electrical insulating material the space radially external to the electric field-control element and the stress control screens, the step of filling being carried out during the step of introducing; curing the electrical insulating material to obtain the electrical insulating element of the elastomeric sleeve. An apparatus for carrying out the process for manufacturing is also disclosed.Type: GrantFiled: October 30, 2002Date of Patent: January 12, 2010Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Ubaldo Vallauri, Francesco Portas
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Publication number: 20090183896Abstract: In a method for longitudinal sealing of electrical conductors (2) that comprise one or more conductor elements (21) disposed inside an external sheath (22), and comprise cavities (23) between the individual conductor elements (21) and between the individual conductor elements (21) and the external sheath (22), according to the present invention the one end (2a), requiring sealing, of the conductor (2) is immersed in a liquid sealing compound (3), and the other end (2b) of the conductor (2) has negative pressure applied to it. A sealing apparatus (1) suitable for carrying out said method encompasses a supply reservoir (4) for the liquid sealing compound (3) into which the one end (2a), requiring sealing, of the conductor (2) is immersed; and a negative-pressure source (5) to which the other end (2b) of the conductor (2) is connected.Type: ApplicationFiled: July 10, 2007Publication date: July 23, 2009Inventors: Werner Hofmeister, Ulrich Schmatz, Thomas Frahammer
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Publication number: 20090176960Abstract: An improved method for imparting excellent long-term dielectric performance to an in-service electrical cable section having a stranded conductor surrounded by a conductor shield encased in a polymeric insulation and having an interstitial void volume in the region of the conductor, the cable section having an average operating temperature T.Type: ApplicationFiled: January 6, 2009Publication date: July 9, 2009Applicant: Novinium, Inc.Inventors: Glen J. Bertini, Gary A. Vincent
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Publication number: 20090126993Abstract: A Drain wire led out from the interior to the exterior of a shielded wire is covered with a heat shrinkable tube made of an insulating resin or with a rubber tube including silicon or EPDM (ethylene-propylene rubber). A water-stop agent is penetrated between the element wires of the drain wire in the heat shrinkable tube or the rubber tube. In addition, A boundary portion between a terminal connected to an end of the drain wire and the heat shrinkable tube is covered with a rubber stopper.Type: ApplicationFiled: January 29, 2007Publication date: May 21, 2009Applicants: AUTONETWORKS TECHNOLOGIES , LTD., SUMITOMO WIRING SYSTEMS , LTD., SUMITOMO ELECTRIC INDUSTRIES , LTD.Inventors: Naoya Nishimura, Toshio Kometani, Masahiro Hagi, Hirotaka Baba, Yoshiaki Yamano
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Patent number: 7469470Abstract: A cable comprises at least two cores stranded together, an expanded inner jacket layer, a substantially circular metallic armor partially contacting the inner jacket to form unfilled interstices outside the inner jacket, and a polymeric outer jacket. The expanded inner jacket substantially takes the shape of the periphery of the stranded cores, providing a non-circular cross section for the expanded inner jacket. A method of producing a cable comprises providing at least two cores, expanding a polymeric material, extruding the expanded polymeric material around the cores, and allowing the expanded polymeric material to collapse onto the cores. A substantially circular metallic armor is applied, resulting in a plurality of unfilled voids between the inner jacket and the metallic armor. An outer jacket is extruded on the metallic armor.Type: GrantFiled: November 16, 2006Date of Patent: December 30, 2008Assignee: Prysmian Cavi e Sistemi Energia S.R.L.Inventors: Daniel Cusson, Paul Cinquemani, Paolo Veggetti, Marco Frigerio, Alberto Bareggi
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Publication number: 20080223498Abstract: An improved method for imparting excellent long-term dielectric performance to an in-service electrical cable section having a stranded conductor surrounded by a conductor shield encased in a polymeric insulation and having an interstitial void volume in the region of the conductor, the cable section having an average operating temperature T.Type: ApplicationFiled: August 29, 2006Publication date: September 18, 2008Applicant: Novinium, Inc.Inventors: Glen J. Bertini, Gary A. Vincent
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Publication number: 20080178983Abstract: A composite-forming process includes impregnating a reinforcing structure with a curable composition at a temperature of about 10 to about 40° C. The curable composition includes specific amounts of an epoxy resin, a poly(arylene ether), a solvent, and a curing promoter. The poly(arylene ether) includes, on average, about 1.6 to about 2.4 phenolic hydroxy groups per molecule, and it has a polydispersity index less than or equal to 2.2 and an intrinsic viscosity of about 0.03 to about 0.2 deciliter per gram. These characteristics substantially improve the solubility of the poly(arylene ether) in the curable composition and allow the curable composition to be formed and used at or near room temperature. Composites formed by the process and circuit boards including the composites are also described.Type: ApplicationFiled: February 2, 2007Publication date: July 31, 2008Inventors: Christina Louise Braidwood, Hua Guo, Edward Norman Peters
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Publication number: 20080099121Abstract: There is provided a conductive paste obtained by kneading conductive particles into an epoxy resin and having good filling ability into a via hole, which can form a connected portion wherein the connection resistance does not change with time even under high temperature and high humidity conditions. Also, there is provided a method for manufacturing a multilayer printed wiring board using the conductive paste. A conductive paste containing conductive particles and a resin mixture wherein the content of the epoxy resin having a molecular weight of 10,000 or more is from 30 to 90% by weight in the total resin component and whose elastic modulus at 85° C. after curing is 2 GPa or less, the content of the conductive particle being from 30 to 75% by volume. Furthermore, a method for manufacturing a multilayer printed wiring board using the conductive paste.Type: ApplicationFiled: September 26, 2005Publication date: May 1, 2008Inventors: Yoshio Oka, Hitoshi Takii, Noriki Hayashi
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Patent number: 7303639Abstract: A method of forming a member for joining to form a composite wiring board. The member includes a dielectric substrate. Adhesive tape is applied to at least one face of said substrate. At least one opening is formed through the substrate extending from one face to the other and through each adhesive tape. An electrically conductive material is dispensed in each of the openings and partially cured. The adhesive tape is removed to allow a nub of the conductive material to extend above the substrate face to form a wiring structure with other elements.Type: GrantFiled: August 22, 2005Date of Patent: December 4, 2007Assignee: International Business Machines CorporationInventors: Brian E. Curcio, Donald S. Farquhar, Lisa J. Jimarez, Keith P. Brodock
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Patent number: 7257889Abstract: A method for feeding wires through a braided shield, comprises steps of wrapping the ends of the wires with tape to create a plug end; inserting the plug end into a flexible tube that is mounted to an insert tool having a tapered end; feeding the insert tool through the braided shield to pull the wires through the braided shield; removing the plug end from the flexible tube; and unwrapping the tape from around the wires.Type: GrantFiled: July 14, 2005Date of Patent: August 21, 2007Assignee: United States of America as represented by the Secretary of the NavyInventor: David R. Guitas
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Patent number: 7208192Abstract: Application of a thermally and/or electrically conductive compound to fill a thermal and/or EMI shielding gap between a first and a second surface. A supply of a fluent, form-stable compound is provided as an admixture of a cured polymer gel component, and a particulate filler component. An of the compound is dispensed from a nozzle or other orifice under an applied pressure onto one of the surfaces which, when opposed, form the gap, or into the gap formed between the surfaces. The gap is at least partially filled by at least a portion of the dispensed compound.Type: GrantFiled: January 16, 2003Date of Patent: April 24, 2007Assignee: Parker-Hannifin CorporationInventors: Michael H. Bunyan, Miksa de Sorgo
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Patent number: 7204896Abstract: An electrical cable includes a conductor, an outer sheath, and a self-repairing material layer between the conductor and outer sheath. The self-repairing material layer is distributed around the conductor in a discontinuous manner. An anchor portion is formed between the conductor and the outer sheath.Type: GrantFiled: November 8, 2002Date of Patent: April 17, 2007Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Andrew L. Maunder, Alberto Bareggi, Luca Balconi, Gaia Dell′Anna, Giovanni Pozzati, Sergio Belli
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Patent number: 6969436Abstract: A method of forming a member for joining to form a composite wiring board. The member includes a dielectric substrate. Adhesive tape is applied to at least one face of said substrate. At least one opening is formed through the substrate extending from one face to the other and through each adhesive tape. An electrically conductive material is dispensed in each of the openings and partially cured. The adhesive tape is removed to allow a nub of the conductive material to extend above the substrate face to form a wiring structure with other elements.Type: GrantFiled: August 13, 2003Date of Patent: November 29, 2005Assignee: International Business Machines CorporationInventors: Brian E. Curcio, Donald S. Farquhar, Lisa J. Jimarez, Keith P. Brodock
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Patent number: 6918411Abstract: A method and a device for the production of a ribbon are provided. The method may be performed on a narrow fabric needle loom and may include repeating the following steps: picking a weft thread (4), with (only) one weft needle (1); meshing the weft thread (4), with a catch thread (5), delivered from the side opposite the weft side (weft exit side), by a knitting needle (2) working on the weft exit side; returning the weft needle (1) and wrapping the weft thread (4), with a catch thread (6), delivered from the weft side by a knitting needle working on the weft side. The device may include a narrow fabric needle looms, for production of a ribbon, in particular by the above method. A webbing is also provided that may be produced from the above method.Type: GrantFiled: December 22, 2000Date of Patent: July 19, 2005Inventors: Johann Berger, Erich Reiter, Siegfried Hahn, Ingeborg Genoveva Pedall, Günter Pedall
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Publication number: 20040050575Abstract: A splice protection system including a water resistant material disposed on a flexible wrapper that retains the water resistant material is disclosed. The splice protection system is useful for preventing unwanted entry of external elements into the splice regions of signal transmission devices, thus preserving the integrity and function of the signal transmission devices.Type: ApplicationFiled: September 3, 2003Publication date: March 18, 2004Applicant: Chemque, Inc.Inventor: Elliott E. Hershkowitz
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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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Patent number: 6521481Abstract: A method for controlling the adhesive distribution in a flip-chip semiconductor product has steps: (a) providing a substrate with a flip-chip electrically mounted on the substrate via multiple bumps, (b) providing an dam along an edge of the flip-chip, and (c) depositing adhesive on the dam to flow into a space between the substrate and a bottom of the flip-chip by capillary effect. The shape of the dam is determined by the density of the multiple bumps to control the flowing speed of the adhesive to obtain a good adhesive distribution.Type: GrantFiled: January 7, 2002Date of Patent: February 18, 2003Assignee: Advanced Semiconductor Engineering, Inc.Inventors: Yu-Wen Chen, Hui-Lung Chou, Wann-Lung Chien
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Patent number: 6514376Abstract: The invention is embodied in a plasma reactor including a plasma reactor chamber and a workpiece support for holding a workpiece near a support plane inside the chamber during processing, the chamber having a reactor enclosure portion facing the support, a cold body overlying the reactor enclosure portion, a plasma source power applicator between the reactor enclosure portion and the cold body and a thermally conductor between and in contact with the cold body and the reactor enclosure. The thermal conductor and the cold sink define a cold sink interface therebetween, the reactor preferably further including a thermally conductive substance within the cold sink interface for reducing the thermal resistance across the cold sink interface. The thermally conductive substance can be a thermally conductive gas filling the cold body interface. Alternatively, the thermally conductive substance can be a thermally conductive solid material.Type: GrantFiled: March 7, 2000Date of Patent: February 4, 2003Assignee: Applied Materials Inc.Inventors: Kenneth Collins, Michael Rice, Eric Askarinam, Douglas Buchberger, Craig Roderick
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Publication number: 20030006056Abstract: A method and apparatus for producing a reinforce a conductor of a utility transmission line is provided by selecting an electrical or communication conductor for a desired utility, selecting a plurality of strands of filaments to mechanically reinforce the utility transmission line, selecting a polymer treated with a catalyst to encase the strands of filament and the transmission line, pulling the strands of filament and the transmission line encased in the treated polymer through an elongated protrusion die to form an electrically insulated and reinforced utility cable, maintaining an elevated temperature gradient along the die to control the physical property of the polymer as the polymer catalyze, bending the cable in reversed directions after emerging from the protrusion die during completion of the catalyzing and during cooling to ambient temperature to avoid the occurrence of a permanent set in the catalyzed polymer, and coiling the newly formed electrically insulated and reinforced utility cable.Type: ApplicationFiled: June 13, 2002Publication date: January 9, 2003Inventors: Jerry W. Wilemon, Rudolph P. Suto, Forrest F. Stacy
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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: 20020157756Abstract: This invention provides a method of producing a ceramic laminate body capable of suppressing the occurrence of de-lamination and cracks, and providing high reliability. This method comprises a heat-bonding step of covering a full periphery of side surfaces of ceramic layers 11 positioned in an orthogonal direction to a laminating direction with a side surface jig while the ceramic layers are laminated, heating the ceramic layers and pressing the ceramic layers from both end faces positioned in the laminating direction by end face jigs to form a heat-bonded ceramic laminate body; and a side surface grinding step of grinding or cutting the full periphery of the side surfaces inclusive of damage portions 9 occurring in the ceramic laminate body in the heat-bonding step.Type: ApplicationFiled: April 10, 2002Publication date: October 31, 2002Inventors: Kazuhide Sato, Hidekazu Hattori, Toshiaki Kamiya, Osamu Inoue
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Patent number: 6391447Abstract: A method for manufacture of an electric device having at least one conductor and a porous, fibrous and/or laminated electrically insulating dielectric system comprising a solid electrically insulating part impregnated with a dielectric fluid and a porous, fibrous and/or laminated body for use in an electric device produced with the method.Type: GrantFiled: August 3, 2000Date of Patent: May 21, 2002Assignee: ABB ABInventors: Anna Kornfeldt, Johan Felix, Mikael Bergkvist, Per Nordberg
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Patent number: 6302980Abstract: A method for forming a longitudinally water-tight section in a predetermined area of a multi-conductor wiring system. The multi-conductor wiring system has a plurality of individual conductors, each individual conductor being encased in an insulative sheath.Type: GrantFiled: June 24, 1999Date of Patent: October 16, 2001Assignee: DSG Schrumpfschlauch GmbHInventors: Martin Kortenbach, Christoph Von Pupka, Helmut Arenz, Michael Krusenbaum, Thomas Heim
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Patent number: 6296173Abstract: A method and device for attaching a module having a ball grid array or column grid array of solder material thereon arranged in a given pattern or footprint to a substrate having an array of connector pads arranged in the same pattern is provided. A preformed alignment device has an array of through holes therein aligned in the same pattern or footprint as the ball grid array or column pattern on the module and the pattern of contact pads on the substrate. The through holes in the preform are filled with a solder material which can be either a solder paste or a solid solder or with a curable conductive adhesive. The solder preferably is a lead-tin eutectic, but in any event has a melting point of less than about 240° C. and in the case of the conduction adhesive, will cure below about 240° C. The preform with the filled through holes is interposed between the module and the substrate with the material in the holes in contact with the solder balls or columns and the contact pads.Type: GrantFiled: January 3, 2001Date of Patent: October 2, 2001Assignee: International Business Machines CorporationInventors: John Gillette Davis, Joseph Michael Kielbasa
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Patent number: 6180226Abstract: The present invention provides a number of interrelated methods for the production of random and ordered arrays of particles and recesses as well as films containing such arrays and recesses. The present invention also relates to the random and ordered arrays of particles and films prepared therefrom. The ordered arrays are obtained by the use of ferrofluid compositions which may be curable, solidifiable on non-curing/non-solidifiable. The arrays and films may contain electrically-conductive particles useful in electronic applications for effecting contact between leads or pads.Type: GrantFiled: March 31, 1998Date of Patent: January 30, 2001Assignee: Loctite (R&D) LimitedInventors: Ciaran B. McArdle, Joseph Burke, Edward K. Welch, II
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Patent number: 6154138Abstract: The Invention relates to a device (1) for clothes (2) and others which device after activation is arranged to function as protection against theft of the object in question by cooperation with an alarm indicator gate, a hand scanner or any similar control apparatus. A label (3) which is woven comprises an electric alarm (4) inserted into a woven label (3).Type: GrantFiled: September 8, 1999Date of Patent: November 28, 2000Assignee: Nilorn ABInventor: Claes-Goran Nilsson
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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: 6037043Abstract: UV-hardenable and thermally hardenable epoxy resins for the underfilling process in electrical and electronic components are provided. A new casting resin component has an increased storage stability at room temperature of at least 6 months and improved characteristics for the underfilling process including faster hardening and lower viscosity. Filler material with a maximum grain size of 20 .mu.m and a siloxane component are provided in addition to the casting resin formulation.Type: GrantFiled: September 19, 1997Date of Patent: March 14, 2000Assignee: Siemens AktiengesellscaftInventors: Barbara Lehner, Recai Sezi
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Patent number: 5993579Abstract: A composite cable has a reinforcing layer with conductors disposed on opposed planar surfaces. Dielectric film layers electrically separate the conductors on the planar reinforcing layer from respective layers of additional conductors. The flexible cable is manufactured by laminating a layer of dielectric film and a layer of electrically conductive material onto both sides of a double clad core which provides a strain relief reinforcement for the cable.Type: GrantFiled: June 16, 1997Date of Patent: November 30, 1999Assignee: International Business Machines CorporationInventors: Donald Seton Farquhar, William Louis Brodsky, Natalie Barbara Feilchenfeld, Lisa Jeanine Jimarez, James Robert Wilcox
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Patent number: 5972138Abstract: The process of the invention to make miniaturized multipolar cables includes the steps of combining together a plurality of individually insulated conductors, inserting a filling in a pasty state and containing mineral fillers into the gaps existing between the conductors, partly hardening the filling and disposing the other cable components, in particular the sheath, around the conductors-filling assembly, and letting the filling become completely hard within the produced cable.Type: GrantFiled: September 26, 1996Date of Patent: October 26, 1999Assignee: Pirelli Cavi S.p.A.Inventors: Luca Castellani, Luca De Rai, Pasquale Volpe
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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: 5876528Abstract: A method and a resulting cable (10) is disclosed which precludes fluid wicking within the interior of the cable (10) by impregnating the cable (10) with a sealing composition and curing the sealing composition therein. The cable (10) includes an ultimate strata (18), a penultimate strata (20) and a central strata (40) concentrically disposed. The central strata (40) includes a central signal transmission medium (44) separated from the penultimate strata (20) by a central insulator or dielectric (42). The penultimate strata (20) includes a braided sheath (32) circumscribing a braided conductor (22) and an insulator (30) interposed therebetween. The ultimate strata (18) surrounds the interior or the penultimate strata (20) and central strata (40) of the cable (10).Type: GrantFiled: February 17, 1995Date of Patent: March 2, 1999Assignee: Bently Nevada CorporationInventors: Robert Nikkels, Dave Van den Berg
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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: 5709752Abstract: An apparatus for filling the interspaces between leads of a bundle of leads, which may be optical or electrical leads, with a water-repelling compound characterized by a filling head having a pre-filling chamber and a main filling chamber. The leads are supplied via a common admission channel to the pre-filling chamber which has a channel opening that is selected to be only slightly larger than the diameter of the envelope of the leads combined to form a bundle of leads. The pre-filling chamber is followed by a coating nozzle having a diminished cross section, which coating nozzle receives the bundle and discharges it into the main filling chamber.Type: GrantFiled: July 31, 1992Date of Patent: January 20, 1998Assignee: Siemens AktiengesellschaftInventors: Horst Knoch, Norbert Niesemeyer, Wilfried Reissenweber
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Patent number: 5635678Abstract: A construction for and a method of waterproofing a group of wires of a wiring harness inserted through a tubular member, the construction including: a tube which has a closed distal end portion and an open rear end and is formed, in the vicinity of the closed distal end portion, with a number of pores; the tube being disposed at a substantially central portion of the wires of the wiring harness; and pourable sealing compound which is injected into the tube from the open rear end and is extruded from the pores of the closed distal end portion so as to be filled into gaps among the wires of the wiring harness.Type: GrantFiled: May 19, 1994Date of Patent: June 3, 1997Assignee: Sumitomo Wiring Systems, Ltd.Inventor: Jun Yasukuni
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Patent number: 5613298Abstract: The method and apparatus is provided for sealing a splice in an electrical cable. A pair of spaced-apart sealing dams are formed about the electrical cable with the splice being located therebetween. A generally cylindrical splice enclosing shell, having a pair of opposed open ends is supported around the splice. The shell includes plural shell fingers extending from each end of the shell. The shell fingers are secured to each other at a location outwardly adjacent of the sealing dams to positionally confine the sealing dams, preventing outward migration thereof. The splice may be encapsulated with an encapsulant under pressure, which is retained by the splice enclosing shell.Type: GrantFiled: January 17, 1995Date of Patent: March 25, 1997Assignee: Thomas & Betts CorporationInventors: Andrew J. O'Neill, William H. Cook, Richard F. Strauss, Kenneth R. Dumont
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Patent number: 5601668Abstract: A sealing material preferably having a cone penetration of at least 150 (10.sup.-1 mm) and an ultimate elongation of at least 100% is subjected to mechanical deformation by milling or chopping in the presence of a solvent or suspending medium.Type: GrantFiled: May 23, 1995Date of Patent: February 11, 1997Assignee: Raychem CorporationInventor: William D. Uken
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Patent number: 5589666Abstract: A buried service splice enclosure for sealing a splice of telecommunication cables comprises a closure defining an interior space for accommodating the cable splice and defining an opening for receipt of the splice therethrough. A closure seal sealably closes the closure opening and has apertures for receipt therethrough of the cables. Means are provided for sealing the closure seal to the closure and for sealing the cables to the closure seal at the apertures. An inlet fitting, such as a check valve, communicates with the closure interior space and is adapted to receive and pass an encapsulant under pressure into the interior space. An outlet fitting, such as a pressure relief valve, also communicates with the interior space, the pressure relief valve adapted to pass the encapsulant therethrough when the encapsulant is exposed to a predetermined pressure in the closure interior space.Type: GrantFiled: April 30, 1993Date of Patent: December 31, 1996Assignee: Thomas & Betts CorporationInventors: David J. DeCarlo, Thomas L. Mineur, Ronald S. Stanwick
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Patent number: 5536528Abstract: A method and apparatus for stranding tape-shaped optical fibers of the present invention strands a plurality of tape-shaped optical fibers each of which is constituted by a plurality of optical fibers arranged into a tape-shaped unit, wherein powder is applied onto at least one surface of each of said tape-shaped optical fibers in pathlines between supplying devices for supplying said tape-shaped optical fibers and a stranding die of said tape-shaped optical fibers.Type: GrantFiled: July 25, 1994Date of Patent: July 16, 1996Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Tanaka, Kazuhiro Hamada, Shigeru Suemori, Takehiko Okada
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Patent number: 5536904Abstract: A waterproof construction of a wire for a motor vehicle, which wire has one or more strands and an insulating coating surrounding the strands and is connected to a nonwatertight terminal including a terminal fixed directly to a body of the motor vehicle and a terminal mounted on a nonwatertight connector, wherein at a portion of the wire between its location connected to the nonwatertight terminal and a first branch point, the insulating coating is removed from the wire so as to expose the strands and waterproof material is filled among the strands such that an insulating and waterproofing coating member is wound around an outer periphery of the waterproof material.Type: GrantFiled: April 22, 1994Date of Patent: July 16, 1996Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Kenji Kojima, Satoshi Amihiro
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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: 5456791Abstract: An automatic waterproofing apparatus for automatically waterproofing a joint of electric wires, comprising: a plurality of pallet jigs each of which is formed with a recess for receiving the joint, a pair of slots for receiving the electric wires and an air vent hole communicating with the recess; a transport device for continuously transporting the pallet jigs; a sheet feeding device for feeding onto an upper face of each pallet jig a flexible band-like sheet; a slit forming device for forming at opposite sides of the sheet a pair of slits corresponding to the slots, respectively; a suction device for sucking air in the recess of each Dallet jig from the air vent hole so as to bring the sheet into close contact with the recess; a joint placing device for placing the joint in the recess and inserting into the slots through the slits the electric wires disposed at opposite sides of the joint; a filler injecting device for injecting a predetermined quantity of filler into the recess; and an adhesive tape bondinType: GrantFiled: August 31, 1994Date of Patent: October 10, 1995Assignee: Sumitomo Wiring Systems, Ltd.Inventor: Takashi Ueno
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Patent number: 5415713Abstract: A method of sealing a connector (2) in an electrical cable (1) for example a submarine cable comprises:(i) applying a quantity of gel (6) onto the connector and encapsulate at least part of it;(ii) positioning an inner hollow dimensionally recoverable article (9), for example in the form of a cap, about the connector and gel and recovering it thereon to enclose the gel and at least part of the connector, the recovery causing part (12) of the gel to exude out of the open end of the article; and(iii) positioning an outer hollow open-ended dimensionally recoverable article (13) over the connector (2) and recovering it so that it encloses at least the end of the inner article (9) and the part (12) of the gel (6) that has exuded therefrom.This method can enable an effective seal against moisture ingress to be made while at the same time being relatively easy to remove for re-entry without damaging the connector.Type: GrantFiled: February 28, 1994Date of Patent: May 16, 1995Assignee: Raychem LimitedInventor: David Vatcher
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Patent number: 5312499Abstract: Disclosed is an apparatus and method for making a loose tube buffered optical fiber, the apparatus comprising an extrusion crosshead having an inlet and exit port connecting a plastic flow passageway circumscribing another passageway in which there is disposed a grease injection unit having three concentrically disposed tubes, the first tube delimiting a path for optical fiber travel, the first and second tubes spaced apart from one another forming a travel path therebetween for jelly or grease-like hydrocarbon filling material and the third tube (circumscribing the first and second tube) forming a chamber at a terminal end portion, the chamber in communication with the travel paths of both the grease and optical fibers and in which the grease comes in contact with the optical fibers, the chamber being so disposed that the contact point of the grease and fibers is only after the grease and fibers have traveled a majority of the length of the grease injection unit.Type: GrantFiled: October 19, 1992Date of Patent: May 17, 1994Assignee: Siecor CorporationInventors: Rodney D. Bolick, Mark A. Sigmon
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Patent number: 5251373Abstract: A method for protectively enclosing electrical cables, wherein a portion of at least one cable is sealably disposed in the interior of a housing, includes the steps of placing a pressure-relief valve in communication with the housing interior, the pressure-relief valve being selected to pass an encapsulant therethrough on exposure to a predetermined pressure in said housing interior, and introducing an encapsulant under pressure into the housing interior until the encapsulant passes through the pressure-relief valve. The encapsulant introduction step is practiced by providing a pump having an inlet and an outlet, placing the pump inlet in communication with the housing interior and supplying encapsulant to the pump inlet directly from a bulk encapsulant container.Type: GrantFiled: October 15, 1991Date of Patent: October 12, 1993Assignee: Thomas & Betts CorporationInventors: David J. DeCarlo, Thomas L. Mineur, Ronald S. Stanwick
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Patent number: 5250319Abstract: Disclosed is a process for the preparation of an electroconductive polymeric material, comprising the steps of forming fine grooves in a substrate, embedding a polymerization reaction catalyst in the fine grooves, and bringing a monomer capable of forming an electroconductive polymeric material into contact with the catalyst embedded in the fine grooves to selectively form fine wiring of the electroconductive polymeric material in the grooves. According to this process, a polymeric material oriented in the longitudinal direction of the fine grooves can be prepared, and therefore, a polymeric material having an excellent electroconductivity can be provided.Type: GrantFiled: April 10, 1992Date of Patent: October 5, 1993Assignee: Fujitsu LimitedInventor: Nagisa Ohsako
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Patent number: 5244876Abstract: Method for joining parts of ceramic high-temperature superconductor material of the composition Bi.sub.(2+a-b) (Sr.sub.1-c) Ca.sub.c) .sub.(3-a) Pb.sub.b Cu.sub.(2+d) O.sub.x, where a is 0 to 0.3, b is 0 to 0.5, c is 0.1 to 0.9 and d is 0 to 2 and x has a value depending on the state of oxidation of the metals present, the end faces of the parts located at a gap spacing apart from one another are heated by means of a fuel gas/oxygen flame to temperatures from 750.degree. to 875.degree. C. Simultaneously, a rod of the same material above the spacing gap is heated until the melt thereof drips off into the gap between the end faces of the two parts, completely filling the gap. At least the joint region between the two parts is then heat-treated for 7 to 100 hours at temperatures between 780.degree. and 850.degree. C.Type: GrantFiled: October 26, 1992Date of Patent: September 14, 1993Assignee: Hoechst AktiengesellschaftInventors: Eberhard Preisler, Joachim Bock, Johannes Holzem, Werner Horst
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Patent number: 5229058Abstract: Environmental sealing may be achieved by extruding a sealing material having a cone penetration value preferably from 100-350 (10-1 mm) and an ultimate elongation of at least 100% from a material-dispensing gun, having means for example a mesh, for causing the material to be mechanically deformed preferably by shear and preferably causing it to be comminuted.Type: GrantFiled: March 4, 1991Date of Patent: July 20, 1993Assignee: Raychem CorporationInventors: David W. Uken, Paul G. Schoenstein, Geary Camin
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Patent number: 5201903Abstract: A miniature, electrically-insulated multi-conductor electrical cable suitable for implantation in living bodies and readily connected to sensors or electrodes with terminal pads or to conductors such as printed flex circuit traces of electrical circuits, and a method for preparing such cables. Individual electrical conductors are coated with at least one layer of insulating material. The insulated individual conductors are stranded together, or optionally bound together by an additional layer of insulating material which is compatible with implantation in living bodies. The individual conductors are separated from one another in terminal portions of the cable and are encapsulated in a ribbonizing resin which is trimmed to expose portions of the individual conductors, held by the ribbonization resin at a predetermined pitch to facilitate connection of each of the conductors to a respective conductor trace of a printed circuit or flex circuit.Type: GrantFiled: October 22, 1991Date of Patent: April 13, 1993Assignee: PI (Medical) CorporationInventors: Scott S. Corbett, III, W. Eugene Skiens, John J. Stobie, Doris A. Beck