With Powdered Or Granular Material Patents (Class 174/118)
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Patent number: 10297366Abstract: An electric power cable is provided, wherein the electric power cable comprises an organic silicon insulating coating layer capable of being cured at room temperature. Generally, the electric power cable comprises a cable conductor capable of transmitting electric energy, and the organic silicon insulating coating layer is coated to the exterior surface of the cable conductor. The cable conductor may be an exposed overhead bare conductive wire, and the organic silicon insulating coating layer is especially suitable for being formed on the exterior surface of the overhead bare conductive wire by coating directly thereto.Type: GrantFiled: November 12, 2015Date of Patent: May 21, 2019Assignee: 3M Innovative Properties CompanyInventors: Xueyan Yao, Zheng Guan, Chongrui Cai, Tiande Wang, Yaming Wang
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Patent number: 10128020Abstract: An electrical apparatus that includes a cable connected to a transmission optimizer and configured to conduct a current for matching a desired power output. The cable includes at least one insulated conductor core including an innermost insulating layer disposed around the outside of a conducting layer having carbon fiber or graphite fiber as a conductor core. The cable is a single core cable having a single insulated conductor core or a multi-core cable having multiple single insulated conductor cores.Type: GrantFiled: May 16, 2014Date of Patent: November 13, 2018Inventors: Soow Kheen Wong, Luk Mui Joe Lam
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Publication number: 20150075841Abstract: A silicone article, such as a cable with a silicone outer jacket, is improved with respect to its feel and particularly its coefficient of friction is reduced. Solid mica particles are introduced into the surface of the cable or other article. An intermediate product which has a silicone-type base material on the exterior is initially provided in a state that is not, or no more than partially, cross-linked. The solid material particles are subsequently pressed in, before the complete cross-linking takes place. The solid material particles are present only in the surface region.Type: ApplicationFiled: November 25, 2014Publication date: March 19, 2015Inventors: MICHAEL DREINER, ALBERT NORDING
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Patent number: 8802230Abstract: An electrically-insulative coating for minimizing an electrical conductivity of a metal substrate includes a polymer component formed from a monomer precursor, and a powder component substantially dispersed in the polymer component. The powder component is present in the electrically-insulative coating in an amount of from about 5 parts to about 80 parts by weight based on 100 parts by weight of the electrically-insulative coating. The electrically-insulative coating does not substantially degrade when exposed to from about 100 V to about 330 V at a temperature of from about ?50 ° C. to about 500 ° C., and has a dielectric strength of at least about 2,000 VAC/mil. An electrically-insulative coating system and a method of forming an electrically-insulative coating on a metal substrate are also disclosed.Type: GrantFiled: December 18, 2009Date of Patent: August 12, 2014Assignee: GM Global Technology Operations LLCInventor: Yucong Wang
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Patent number: 8703288Abstract: Cable coatings having effective low-smoke emission, fire resistance and moisture resistance provided by a single layer are described. The cable coatings contain an base polymer, a oxygen containing ethylene copolymer, a fire retardant and a synergistic blend of magnesium hydroxide and aluminum hydroxide. Cables coated with the described coatings have improved wet electrical performance, and satisfactory fire performance and smoke characteristics.Type: GrantFiled: March 21, 2008Date of Patent: April 22, 2014Assignee: General Cable Technologies CorporationInventor: Tim Clancy
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Publication number: 20130126210Abstract: A method for forming a cover assembly on an electrical power transmission cable includes: mounting a tubular cover member around the cable such that a portion of the cover member defines a cavity surrounding the cable; providing a flowable electrical stress grading material in the cavity; and applying a vacuum to the cavity to evacuate air from the cavity and compact the electrical stress grading material in the cavity.Type: ApplicationFiled: November 23, 2011Publication date: May 23, 2013Inventor: Ladislaus Kehl
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Publication number: 20130021758Abstract: An interconnect scheme includes a conductive ink forming a plurality of conductive regions, and a dielectric ink occupying spaces between the conductive regions. The conductive ink and the dielectric ink have substantially identical optical, acoustic, and x-ray absorption properties, thereby making the interconnect scheme tamper-resistant and/or difficult to identify and reverse-engineer using conventional detection methods.Type: ApplicationFiled: July 19, 2011Publication date: January 24, 2013Inventors: Jonathan J. Bernstein, Brian R. Smith, Thomas E. Boydston
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Publication number: 20120152590Abstract: A composite magnet wire includes, in an exemplary embodiment, a metal wire and a coating applied to an outer surface of the wire. The coating includes a polyimide polymer and a plurality of alumina nano particles dispersed in the polyimide polymer. The alumina nano particles have a surface treatment applied to outer surfaces of the alumina nano particles, where the surface treatment includes a phenyl-silane. The composite magnet wire has a thermal degradation temperature index of at least 300° C. as calculated in accordance with ASTM E1641 or D2307.Type: ApplicationFiled: December 15, 2010Publication date: June 21, 2012Inventors: Weijun Yin, Kevin Warner Flanagan, Robert Colin McTigue, Mark Rodda, Sergei Kniajanski
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Publication number: 20120012362Abstract: Provided is a DC power cable including a conductor, an inner semiconductive layer, an insulation and an outer semiconductive layer. In particular, the inner semiconductive layer or the outer semiconductive layer may be formed from a semiconductive composition containing a polypropylene base resin or a low-density polyethylene base resin and carbon nano tubes; and the insulation may be formed from an insulation composition containing a polypropylene base resin or a low-density polyethylene base resin and inorganic nano particles. The resulting power cable may have improved properties such as volume resistivity, hot set, and so on, and excellent space charge reducing effect.Type: ApplicationFiled: September 21, 2010Publication date: January 19, 2012Applicant: LS Cable Ltd.Inventors: Yoon-Jin KIM, Jin-Ho Nam, Ho-Souk Cho, Young-Ho Park, Son Tung Ha
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Publication number: 20110290527Abstract: The present invention relates to halogen-free compositions containing an additive of bohmite, nanoclay, microcrystalline talc, zinc hydroxystannate, and a polyolefin oil. The composition is useful as a covering material (e.g. insulation or jacket) for electrical cables with excellent flame resistance and mechanical properties, such as cold bend and thermomechanical properties.Type: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Applicant: General Cable Technologies CorporationInventor: Charles W. HILLS
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Publication number: 20110198108Abstract: The present invention relates to materials for making cable jackets, particularly riser and plenum cables. The materials provide low flammability and allow the cable to meet UL 910 or NFPA 262 or UL 1666 specifications. The material contains PVC resin, a plasticizer, a metal oxide particle, and optionally a brominated phthalate. Preferably, the metal oxide particle is spherical amorphous silicon dioxide. More preferably, the spherical amorphous silicon dioxide has a mean particle size of about 100-200 nm and/or a BET surface area of about 10-30 m2/g. The metal oxide particle is also preferably metal oxide particle non-porous, non-ionic, and/or non-hydrated.Type: ApplicationFiled: February 10, 2011Publication date: August 18, 2011Applicant: General Cable Technologies CorporationInventors: Amjad F. ABU-ALI, Gregg R. Szylakowski, Alice C. Albrinck
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Patent number: 7713620Abstract: To provide a non-crosslinked flame-retardant resin composition possessing sufficient flame retardancy, mechanical properties, flexibility and workability, and also delivering excellent heat resistance over a long period of time as it is hard to be molten when used under high temperature environment and its material is not deteriorated even if used in contact with a vinyl chloride resin material and the like, and an insulated wire and a wiring harness using the same. The composition includes (A) a non-crosslinked base resin which contains a propylene resin containing 50 wt % or more of propylene monomer and a thermoplastic resin of which a melting point is 180° C. or more, (B) a metallic hydrate, (C) a hindered phenolic antioxidant, (D) a sulfurous antioxidant, and (E) a metallic oxide. Polymethylpentene, an imidazole compound and an oxide of zinc are preferably utilized as the thermoplastic resin, the ingredients (D) and (E), respectively.Type: GrantFiled: December 2, 2004Date of Patent: May 11, 2010Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventor: Tatsuya Hase
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Patent number: 7666503Abstract: A self-healing cable comprising a conductor and a water-swellable composition surrounding said conductor is disclosed. When the cable is damaged and water ingress reaches the water-swellable composition, the water-swellable composition expands and fills in any void, puncture or crack present, thus sealing the damage in the cable. In one embodiment, the water-swellable composition is formed from an admixture of a substantially non-water-swellable polymer and a water-swellable filler. In another embodiment, the water-swellable composition is formed from a water-swellable polymer.Type: GrantFiled: January 28, 2005Date of Patent: February 23, 2010Assignee: General Cable Technologies CorporationInventor: Mark R. Easter
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Patent number: 7592572Abstract: A cartridge heater, especially a compressed cartridge heater (1) has at least one heating coil (8, 9), which is arranged exposed in a metallic tubular body (2) and is embedded in a granulated insulating material. The ends of heating coil portions (8, 9) are provided with terminals (7) projecting from the tubular body (2). To make it possible to manufacture such a cartridge heater with minimal effort in terms of labor and material, a flat insulating plate (10) coordinated in its width with the internal diameter of the tubular body (2) is provided as the carrier. The heating coils (8, 9) extend along the two flat sides of the insulating plate (10) and the two heating coils (8, 9) are connected to one another by a coil section (12, 12?), which is led around a deflecting edge (27) of the insulating plate (10).Type: GrantFiled: July 25, 2006Date of Patent: September 22, 2009Assignee: Türk + Hillinger GmbHInventor: Andreas Schlipf
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Patent number: 7554064Abstract: An electrical resistance heater element has a metal tube containing an electrical resistance coil that is electrically insulated from the metal tube by magnesium oxide powder, the coil being bonded to a conductor pin that protrudes from an open end of the tube. The powder is sealed against moisture by placing at least the open end of the tube within a chamber and immersing the open end within liquid silicone. A gas is pumped into the chamber to pressurize the silicone sufficiently to cause some of it to encroach into the powder through the open end of the tube. The heater element is installed within a heat exchanger with the silicone remaining uncured.Type: GrantFiled: February 17, 2006Date of Patent: June 30, 2009Assignee: Gaumer Company, Inc.Inventors: Jackie G. Fannin, Jack L. McClanahan
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Patent number: 7037392Abstract: The invention relates to a process for manufacturing a conductor bar comprising a number of partial conductors, with the following steps: A: manufacturing the partial conductors, B: applying at least one insulating layer to the partial conductors, in each case with the following substeps: B1: coating the regions to be insulated of the partial conductor with a plastics powder, B2: sintering this powder layer by melting the plastic and at least partially curing the plastic to form an insulating layer, the sintering being carried out in such a way that at least one outer insulating layer is not completely cured, C: assembling a number of insulated partial conductors to form a conductor bar, D: sintering the insulating layers of the partial conductors while simultaneously pressing the partial conductors against one another in the assembled conductor bar, the plastic in the case of the not completely cured insulating layers at least partially melting and being squeezed out between the partial conductors, and theType: GrantFiled: March 15, 2002Date of Patent: May 2, 2006Assignee: ALSTOM Technology LTDInventors: Thomas Baumann, Thomas Klamt, Hans-Christoph Nienburg
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Patent number: 6811875Abstract: The prevent invention provides a partial discharge-resistant wire enamel composition wherein at least one fine particle sol selected from the group of metal oxide fine particle sol and silicon oxide fine particle sol is dispersed, and 3 to 100 parts by weight of at least one fine particle selected from the group of a metal oxide fine particle and a silicon oxide fine particle is contained per 100 parts by weight of wire enamel resin. Accordingly, the partial discharge-resistant wire enamel composition having excellent dispersibility of inorganic fine particle can be obtained.Type: GrantFiled: February 16, 2001Date of Patent: November 2, 2004Assignee: Hitachi Cable, Ltd.Inventors: Hideyuki Kikuchi, Yoshiyuki Tetsu
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Patent number: 6791025Abstract: A support member includes a support member body, having a relatively stiff composite material having binding material and reinforcing material drawn through the binding material, and having a mounting end. At least two insulatedly separated conductors are within the composite material, each conductor having a first end exiting the support member body at a first portion and a second end exiting the support member body at a second portion separate from the first portion and drawn through reinforcing material with the binding material.Type: GrantFiled: July 30, 2002Date of Patent: September 14, 2004Assignee: Bose CorporationInventor: John D. Devine
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Publication number: 20030070832Abstract: This invention relates to a safety device (5) for use with a mobile phone (1). The invention provides a device (5) for use with a hands-free kit (2, 3) for a mobile phone (1) having a cable (2) for connection of the mobile phone (1) to an ear piece (3), the device (5) comprising an inductive element (15) formed from a ferrite polymer compound arranged to be located close to the cable (2) of the hands-free kit to reduce radiation induced in the cable (2). In a preferred arrangement there is also a capacitive effect induced when the device is in proximity with a user's body.Type: ApplicationFiled: November 20, 2001Publication date: April 17, 2003Applicant: NTEX AssociatesInventors: Vincent Francis Potter, Paul Martin Bird
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Patent number: 6492596Abstract: A foamable composition containing a base polymer containing a polyethylene mixture of a low density-polyethylene having a density of 0.91-0.925 g/cm3 and a high density polyethylene having a density of 0.94-0.97 g/cm3, and a fluororesin powder and/or a boron nitride powder as a nucleator, wherein the high density polyethylene has an swelling ratio smaller than that of the low density polyethylene and a melt flow rate greater than that of the low density polyethylene, and is contained in a proportion of not less than 50 percent by weight of the polyethylene mixture, and the base polymer has a shear viscosity (temperature:170° C., shear rate:1216 sec−1) of not more than 3150 poise, and a coaxial insulating cable having an electrically insulating layer formed of a foam having an expansion ratio of not less than 70% and obtained by foaming the above foamable composition are provided.Type: GrantFiled: July 14, 2000Date of Patent: December 10, 2002Assignee: Mitsubishi Cable Industries, Ltd.Inventors: Takashi Higashikubo, Hirokazu Kuzushita, Akito Niboshi
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Patent number: 6403700Abstract: The present invention relates to a powdery, cross-linked polymer absorbing water and aqueous liquids formed of polymerized, unsaturated, acid groups-containing monomers that are present as salts neutralized to the extent of at least 50 mol-% and which optionally comprise further monomers which are copolymerizable with the acid groups-containing monomers as well as water-soluble polymers, the polymer being formed of acidic, polymerized monomers partially neutralized to the extent of 5-30 mol-%, relative to the acid groups-containing monomer portion. The polymer has a high retention, high liquid absorption under pressure, high swelling pressure, and a low content of soluble components.Type: GrantFiled: March 21, 2000Date of Patent: June 11, 2002Assignee: Stockhausen GmbH & Co. KGInventors: Kurt Dahmen, Reinmar Peppmöller
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Patent number: 6316104Abstract: Adhesives and adhesive films based on polymer resins and containing a cationic scavenger are provided for circuit materials and flat cables with metallic wiring. The cationic scavenger reduces free cations in the adhesive and prevents the loss over time of insulation and adhesive strength provided to the circuit materials.Type: GrantFiled: December 29, 1999Date of Patent: November 13, 2001Assignee: Sony Chemicals CorporationInventor: Masayuki Kumakura
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Patent number: 6252173Abstract: Bauxite, particularly high alumina bauxite, and brucite are used as flame-retardants in non-aqueous organic polymer formulations particularly for electric insulation or sheathing or encapsulation, and also in bitumen. The formulations are suitable for shaping e.g. by casting, moulding or curing at temperatures of 150° C. or 200° C. Water resistance and other properties including cost of bauxite and brucite compare favourably with the conventional flame-retardant aluminium trihydrate.Type: GrantFiled: September 15, 1999Date of Patent: June 26, 2001Assignee: Alcan International LimitedInventors: Steve Brown, Natalie Mead, Ken Evans, Consuelo Espejo Rodriguez, Andrew John Dayer
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Patent number: 6165612Abstract: An improved interface pad or layer for use in combination with solid state electronic components adapted to be interposed along a heat dissipating path between the electronic device and a mounting chassis or heat-sink surface. The interface pads comprise a polyphenylsulfone binder or matrix blended with a particulate solid such as alumina, boron nitride, graphite, silicon carbide, diamond, metal powders, and mixtures or blends thereof. Advantageous formulations include up to 45% alumina. Another advantageous formulation includes between 10% and 20% by weight of boron nitride, balance polyphenylsulfone.Type: GrantFiled: May 14, 1999Date of Patent: December 26, 2000Assignee: The Bergquist CompanyInventor: Sanjay Misra
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Patent number: 6060557Abstract: The present invention relates to a powdery, cross-linked polymer absorbing water and aqueous liquids formed of polymerized, unsaturated, acid groups-containing monomers that are present as salts neutralized to the extent of at least 50 mol-% and which optionally comprise further monomers which are copolymerizable with the acid groups-containing monomers as well as water-soluble polymers, the polymer being formed of acidic, polymerized monomers partially neutralized to the extent of 5-30 mol-%, relative to the acid groups-containing monomer portion. The polymer has a high retention, high liquid absorption under pressure, high swelling pressure, and a low content of soluble components.Type: GrantFiled: April 23, 1998Date of Patent: May 9, 2000Assignee: Stockhausen GmbH & Co. KGInventors: Kurt Dahmen, Reinmar Peppmoller
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Patent number: 6017627Abstract: Disclosed is a high voltage electric appliance comprising electric coils whose conductors are wrapped by an insulating tape with subsequent impregnation of thermosetting resin for the electrical insulation. The insulating tape is a laminated body consisting of a built-up mica of fine mica particles and synthetic pulp or a paraffin powder and a reinforcing member. The bonding among the fine mica particles and between the fine mica particles and the reinforcing material is effected by the synthetic pulp as melted and solidified.Type: GrantFiled: October 6, 1997Date of Patent: January 25, 2000Assignees: Kabushiki Kaisha Toshiba, Nippon Rika Kogyosho Co., Ltd.Inventors: Noriyuki Iwata, Kenji Sakayanagi
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Patent number: 5904903Abstract: An electrically heatable starter catalytic converter (5) has a metallic housing (6) in which is arranged the actual catalyst (7) exposed to the exhaust gas flow, an electric resistance heating (8) and an electric connection line (10) that enters the housing (6) through an opening (9). The invention is characterized in that the electric connection line (10) is a metal-clad cable with at least one inner lead (11) electrically insulated from the metal cladding by a mineral (13). The inner lead (11) frictionally engages the electric resistance heating (8), and the metal cladding (12) enters the metallic housing (6) through the opening (9) and is welded or soldered to the edge of the opening (9) in a gas-tight manner.Type: GrantFiled: April 4, 1997Date of Patent: May 18, 1999Assignee: Heraeus Electro-Nite International N.V.Inventors: Uwe Hotz, Hagen Fischer
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Patent number: 5654095Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor and an essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material.Type: GrantFiled: June 8, 1995Date of Patent: August 5, 1997Assignee: Phelps Dodge Industries, Inc.Inventors: Weijun Yin, Donald J. Barta
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Patent number: 5594397Abstract: A ground conductor and a signal conductor are provided in an insulating magnetic body respectively. The insulating magnetic body is a compound member that combines ferromagnetic metal particles and an insulating resin. A signal transmission element, a connector or a circuit board with high frequency stopping and low pass characteristics which will ensure reliable absorption of high frequency components in the high frequency range, can be provided.Type: GrantFiled: March 23, 1995Date of Patent: January 14, 1997Assignee: TDK CorporationInventors: Fumio Uchikoba, Shigeyuki Nakajima, Takashi Ito, Taro Miura, Makoto Kobayashi, Takahide Kurahashi, Yasushi Iijima
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Patent number: 5536478Abstract: A lead construction for a fluid heater such as an electrically heated catalytic converter, is set forth including a mineral insulated cable having a central core connected to the heater element of the fluid heater, an outer metal sheath connected to an enclosing housing for the fluid heater, and electrical insulation between the central core and the outer sheath.Type: GrantFiled: December 1, 1994Date of Patent: July 16, 1996Assignee: Corning IncorporatedInventors: G. Daniel Lipp, Alfred N. Mack, Paul S. Schmitt
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Patent number: 5471014Abstract: An electrical conductor (100) is provided that is insulated with at least one layer of fibrous material (16') and has free-flowing powdered mica (8) disposed about an electrical conductor (2'). Insulated conductor (100) combines high temperature resistance with flexibility and is preferably made by a fluidized bed and/or electrostatic deposition or spray process.Type: GrantFiled: March 24, 1993Date of Patent: November 28, 1995Inventor: Edward A. Green
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Patent number: 5298284Abstract: A cable wrap which swells upon contact with water is made by coating one side of a nonwoven fabric support with a polyvinyl alcohol binding agent and then with a superabsorber powder, drying the coated fabric between contact surfaces, printing a polyacrylate binding agent plaste onto the superabsorber surface, and then drying the coated fabric. Alternatively, the cable wrap can be made by printing a polyacrylate binding agent paste onto a nonwoven fabric support, applying a polyvinyl alcohol binding agent onto the polyacrylate binding agent paste, sprinkling superabsorber powder onto the polyvinyl alcohol binding agent, and drying the coated fabric between contact surfaces.Type: GrantFiled: October 14, 1992Date of Patent: March 29, 1994Assignee: Carl Freudenberg FirmaInventors: Holger Buckwald, Ingrid Schaffert, Werner Schafer
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Patent number: 5206642Abstract: A device for detecting data relating to the passage of vehicles on the road including a piezoelectric effect cable and a cylindrical metal tube having an inside diameter which is larger than the outside diameter of the piezoelectric cable with the space between the cable and inner walls of the tube being filled with a compacted metal oxide power.Type: GrantFiled: April 30, 1991Date of Patent: April 27, 1993Assignee: U.S. Philips CorporationInventors: Pierre Gregoire, Gilles Bailleul
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Patent number: 5138685Abstract: A communications cable (20) includes water blocking provisions which are microbial resistant. The water blocking provisions include a microbial resistant water blocking member (35) comprising a laminate which includes two tapes (37--37) with a superabsorbent powder (40) therebetween. Advantageously, the superabsorbent powder on contact with moisture swells to block further intrusion of moisture and to prevent its movement longitudinally within the cable. The tapes of the laminate may be non-cellulosic such as for example a spunbonded polyester material which has suitable tensile strength and which has a relatively high porosity and further which prevents the growth of fungus. An adhesive system (42) included in the laminate is sufficient to hold together the tapes and the powder without inhibiting swelling of the powder on contact with water.Type: GrantFiled: May 30, 1991Date of Patent: August 11, 1992Assignee: AT&T Bell LaboratoriesInventors: Candido J. Arroyo, Walter J. Paucke
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Patent number: 5111002Abstract: An improvement in the method for preparing diffusion resistant clad thermocouple cable by placing the thermocouple wires in MgO powder or pellets on a strip of metal cladding material and longitudinally bending the strip of cladding material around the thermocouple wire and the MgO and welding the resulting seam closed is achieved when the resulting composite cable is placed on a second metal cladding strip such that when the second strip is bent longitudinally around the composite cable the resulting seam is displaced from the welded seam of the first cladding strip.Type: GrantFiled: January 28, 1991Date of Patent: May 5, 1992Assignee: Omega Engineering, Inc.Inventor: Milton B. Hollander
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Patent number: 5020875Abstract: A communications cable (20) includes water blocking provisions which are microbial resistant. The water blocking provisions include a microbial resistant water blocking member (35) comprising a laminate which includes two tapes (37--37) with a superabsorbent powder (40) therebetween. Advantageously, the superabsorbent powder on contact with moisture swells to block further intrusion of moisture and to prevent its movement longitudinally within the cable. The tapes of the laminate may be non-cellulosic such as for example a spunbonded polyester material which has suitable tensile strength and which has a relatively high porosity and further which prevents the growth of fungus. An adhesive system (42) included in the laminate is sufficient to hold together the tapes and the powder without inhibiting swelling of the powder on contact with water.Type: GrantFiled: January 23, 1990Date of Patent: June 4, 1991Assignee: AT&T Bell LaboratoriesInventors: Candido J. Arroyo, Walter J. Paucke
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Patent number: 4837077Abstract: The invention relates to a hydroexpansible composite material, the method of preparing same and a composition for implementing this method, as well as to the uses thereof. The composite material includes a solid flat support having, on at least one of its faces, a coating with a high proportion of a hydroexpansible polymer powder fixed to the support by means of a hydrosoluble binder, the coating being essentially formed of:95 to 55% by weight of hydroexpansible polymer powder;5 to 23% by weight of hydrosoluble binder; and0 to 22% by weight of surfactant.This hydroexpansible material may advantageously be used in medicine, surgery agriculture and especially as sealing agent in cables, particularly electric cables.FIG. 2 shows how, in a cable, this material (11, 13) forms a sealing ring (13) about the point of infiltration of the water, thus preventing its longitudinal propagation.Type: GrantFiled: June 23, 1986Date of Patent: June 6, 1989Assignees: Intissel, NovacelInventors: Patrice Anton, Denis Bergaentzle
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Patent number: 4773976Abstract: A telecommunications conductor is produced by coating it with a visco-elastic dielectric material and then providing an electrically conductive material around the conductor by bombarding the visco-elastic material with particles of the conductor material and changing the visco-elastic material into hardened form. A shielding layer is provided by causing the particles to adhere to the surface of the dielectric material and when the particles provide a conductive path, the layer is completed by applying conductive material by electrolytical deposition or by plasma coating. Alternatively in an insulated conductor provided with a continuous inductive loading, the particles are caused to enter into and become discretely embedded within the visco-elastic material.Type: GrantFiled: April 14, 1986Date of Patent: September 27, 1988Assignee: Northern Telecom LimitedInventor: Gavriel L. Vexler
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Patent number: 4755020Abstract: An optical fiber cable unit in which an elongated optical fiber is telescoped into an outer jacket such that an annular space is defined between the fiber and the jacket. The space is filled with a polyorganosiloxane "grease" having extremely good thixotropic properties which cause the material to establish a gas-tight seal between the fiber and the jacket while allowing the fiber to float freely within the jacket to avoid elongation of the fiber when tension is applied to the cable.Type: GrantFiled: July 23, 1987Date of Patent: July 5, 1988Assignee: Andrew CorporationInventors: Frank R. Willis, John D. Meyer
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Patent number: 4750805Abstract: A high-Z cable sheathing for shielding against ionic radiation includes tubes made of high-Z material having continuous helical slits extending from end to end of each tube. A helically cut tube made of polyethelene and lead provides a highly flexible sheath for surrounding one or more cables. One or more tubes create the layers of protection over the cable. Oppositely cut helically slit tubes are used adjacent to one another so that the slits of adjacent tubes do not become mechanically aligned with one another.Type: GrantFiled: February 11, 1987Date of Patent: June 14, 1988Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Jonathan Vaderwall
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Patent number: 4701016Abstract: A grease composition comprising oil, colloidal particle filler, and, optionally, a bleed inhibitor is disclosed. The grease typically has a critical yield stress below 140 Pa at 20.degree. C., preferably below 70 or 35 Pa. The grease can advantageously be used as a cable filling material, especially for optical fiber cable. In the latter case it can result in cable having substantially no cabling loss. Preferred compositions comprise 77 to 95% b.w. of ASTM type 103, 104A, or 104B paraffinic or naphthenic oil, or polybutene oil; 2 to 15% b.w. of hydrophobic or hydrophilic fused silica; and optionally, up to 15% b.w. of styrene-rubber or styrene-rubber-styrene block copolymer, or semiliquid rubber.Type: GrantFiled: January 31, 1985Date of Patent: October 20, 1987Assignee: American Telephone and Telegraph Company, AT&T Bell LaboratoriesInventors: Charles H. Gartside, III, Alvin C. Levy, Bob J. Overton, Carl R. Taylor
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Patent number: 4689443Abstract: An armored cable having mineral insulation, comprising a metal central conductor and a cylindrical hollow metal sheath between which a powdered refractory insulating material is interposed, characterized in that the mineral insulating material is a mixture of 10 to 30% by weight of magnesium oxide (MgO) and 70 and 90% by weight of silicon oxide (SiO.sub.2).Type: GrantFiled: December 17, 1985Date of Patent: August 25, 1987Assignee: U.S. Philips CorporationInventor: Gilles Bailleul
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Patent number: 4679317Abstract: A cable which is insulated by means of mineral insulation material and which comprises one or more hollow electric conductors, a mineral insulation material provided around the conductor(s) and a metal sheath, the ends of said cable being sealed in a moisture-tight manner and having a passage for the central conductor(s), as well as a method of manufacturing the cable.Type: GrantFiled: March 28, 1986Date of Patent: July 14, 1987Assignee: U.S. Philips CorporationInventors: Gilles Bailleul, Tjerk Sannes
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Patent number: 4665281Abstract: A flexible tubing cable assembly having an outer sheath of flexible thin wall metal tubing with one or more conductors therein, each of the conductors having a first layer of a first dielectric and a second layer of a second dielectric, with a third dielectric material filling the space between the one or more conductors and the interior of the tubing. In one of several embodiments, the first dielectric is a polyimide film; the second dielectric is a layer of ethylene propylene compound; and the third dielectric is a magnesium oxide insulation. In another embodiment, the first dielectric is a polyimide; the second dielectric is fiberglass; and the third dielectric is a synthetic rubber. The tubing, in cross-section, may be circular or ovate. In addition, the tubing may be of either high tensile strength or low tensile strength, depending upon the weight supported, for instance, if a submersible pump is supported, high tensile strength tubing is used.Type: GrantFiled: March 11, 1985Date of Patent: May 12, 1987Inventor: Anthony G. Kamis
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Patent number: 4562302Abstract: An inside cable having a core of conductors with conductor insulation formed from polyvinylchloride and in which interstices between conductors contains a fire resistant powder to resist burning of the core. The core is surrounded by a fire resistant jacket and the cable is devoid of a tubular metal shield or sheath surrounding the core.Type: GrantFiled: December 21, 1982Date of Patent: December 31, 1985Assignee: Northern Telecom LimitedInventors: John A. Checkland, Leo V. Woytiuk
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Patent number: 4512827Abstract: In a mineral insulated electric cable the powdered insulating material is impregnated with a quantity of a hydrophobic material, for example a silicone, which has been introduced into the powder in liquid form. The added hydrophobic material serves as a barrier against the ingress of moisture, and liquid dimethylpolysiloxane has been found particularly effective, the pressure of even a small quantity of this preventing any significant degree of moisture penetration into the cable.Type: GrantFiled: August 20, 1982Date of Patent: April 23, 1985Assignee: Associated Electrical Industries LimitedInventor: Dennis Gill
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Patent number: 4500371Abstract: An article for forming a cable block or for enclosing a cable splice comprises a recoverable driver sleeve and a particulate heat-activatable adhesive temporarily restrained adjacent an inner surface of the sleeve.Type: GrantFiled: February 14, 1984Date of Patent: February 19, 1985Assignee: N.V. Raychem S.A.Inventor: Hubert De Groot
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Patent number: 4482412Abstract: The insulating spacer for an h-f cable is extruded on the inner conductor, at approximately the correct dimensions, followed by a sizing step in which insulation powder is deposited on the horizontally running, insulated conductor core and melted in a funnel-shaped die to obtain a coating or film which establishes the final dimensions. The outer conductor is formed on top of that coating.Type: GrantFiled: July 10, 1979Date of Patent: November 13, 1984Assignee: Kabel-und Metalwerke Gutehoffnungshuette AGInventors: Eckhardt Schleese, Rudolf Gessner, Horst Manke
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Patent number: 4439255Abstract: A heat-resistant insulated electric wire and cable which comprises an electric conduction; the first coating layer thereon consists of a mixture of a binder and a finely ground and unmelted inorganic substance; and the second organic insulating coating layer formed on the first coating layer. Said heat-resistant insulated electric wire can advantageously be used for a coil of a magnet or a motor.Type: GrantFiled: March 9, 1982Date of Patent: March 27, 1984Assignee: Nippondenso Co., Ltd.Inventors: Takeshi Imai, Naohiro Kako
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Patent number: 4420881Abstract: The mineral substance is mixed (2) with an organic binder, a cylindrical structure is extruded (4), said cylindrical structure having at least one internal duct, and being cut (9) to portions of determined length before undergoing (10) heat treatment to cause the organic binder to burn, then being inserted (12) while hot in a metal sheath-forming tube, then the conductor(s) is (are) passed through the internal duct(s). Application to manufacturing heating elements or thermocouples.Type: GrantFiled: September 11, 1981Date of Patent: December 20, 1983Assignee: Les Cables de LyonInventor: Jean-Claude Bourget