Vinyl Patents (Class 174/110V)
  • Patent number: 6162540
    Abstract: An insulated wire is provided with excellent heat stability and strippability. The wire is coated by a resin composition obtained by mixing 10 parts by weight or less of calcium-zinc stabilizer, 2 to 10 parts by weight of hydrotalcite and 0.1 to 1 part by weight of stearic acid to 100 parts by weight of vinyl chloride resin. This wire is most effective when the size thereof is 0.3 to 2 mm.sup.2 and the thickness of its insulation coating is 0.2 to 0.5 mm.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: December 19, 2000
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Kazunori Tsuji, Masashi Sato
  • Patent number: 6060557
    Abstract: 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: Grant
    Filed: April 23, 1998
    Date of Patent: May 9, 2000
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Kurt Dahmen, Reinmar Peppmoller
  • Patent number: 6043312
    Abstract: The present invention is directed to improved thermoplastic compositions which possess, when utilized for plenum cable construction, not only enhanced low flame and smoke properties, but also enhanced physical properties, such as tensile strength, elongation retention, high and low temperature stability, etc. The thermoplastic compositions may be utilized in various embodiments for producing both the insulation and jacketing layers of plenum cables. In addition, the present invention is also directed to the insulated wire and the jacketed electrical cable produced utilizing the improved thermoplastic compositions.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: March 28, 2000
    Assignee: The Furon Company
    Inventors: Richard H. Fagher, Vijayraj M. Kotian
  • Patent number: 5891571
    Abstract: A fire-resistant polyvinyl chloride (PVC) formulation suitable for use as sheathing on electric wires and cables, contains 15-60 parts by weight per 100 parts by weight of PVC (phr) of a phosphate plasticize, 10-40 phr of a halogenated plasticize, 15-60 phr of aluminium trihydroxide, together with 5-20 phr of an additive combination of 10-90 wt% ofr antimony trioxide and 90-10 wt% of zinc stannate.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: April 6, 1999
    Assignee: Alcan International Limited
    Inventor: Mandy Jayne Herbert
  • Patent number: 5721397
    Abstract: A flexible, tough electrical insulation is described for use in electric motors, generators, hermetic motors, transformers, and other electrical devices. The insulation described herein includes a layer of a cyclohexylene dimethylene terephthalate polymer (PCT), or one or more copolymers thereof. The PCT layer can be used in a film or in a nonwoven mat form, by itself, or alternatively, as a component of a laminate. The insulation can take the form of an insulating tape, an insulating sheet, an electric motor slot liner, motor wedges, or as some other die-cut insulating component. The insulation and products protected by the insulation can be used in a broad range of service application temperatures.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 24, 1998
    Inventor: Martin J. Weinberg
  • Patent number: 5688601
    Abstract: An electrical component comprising an electrical component having an exterior protective layer on at least a portion of a surface. The layer is a cured copolymer of a reaction between at least one oligomer having a terminal ethylenically unsaturated group and at least one monomer having a terminal ethylenically unsaturated group. Alternatively, the layer is a cured copolymer of a reaction between at least two oligomers having a terminal ethylenically unsaturated group. The copolymerization reaction is preferably in the presence of a free radical initiator curing agent and a transition metal catalyst.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: November 18, 1997
    Assignee: Caschem, Inc.
    Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
  • Patent number: 5650205
    Abstract: A flame-retardant resin composition comprising 100 parts by weight of a thermoplastic resin, from 10 to 80 parts by weight of a bis(halogenophenyl)terephthalamide, and from 5 to 40 parts by weight of antimony trioxide; an electric wire comprising a conductor having thereon an insulating layer comprising the resin composition; and a tube or a heat-shrinkable tube comprising the resin composition.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: July 22, 1997
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Satoshi Shukushima
  • Patent number: 5470657
    Abstract: Disclosed is a heat-resistant, high-voltage insulated lead wire for direct current, which meets the demand for higher heat resistance, and its insulating coating over the conductor is formed by a polyolefin resin composition. The polyolefin resin composition is a flame-retarded resin composition comprising of a mixture of a polyethylene whose crystalline component has melting point higher than C. and a copolymer of ethylene and .alpha.-olefin, which contains a multifunctionalized monomer having unsaturated carbon-carbon bond moiety in the molecule as an indispensable component. The insulating coating made of this resin composition is irradiated by an ionizing radiation to give a heat-resistant, high-voltage lead wire for direct current, which has a perpendicular flame resistance (VW-1) acceptable in the UL Standards and has a temperature rating of higher than C.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: November 28, 1995
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Hiroshi Hayami
  • Patent number: 5464949
    Abstract: Low viscosity, solventless, thermosetting resin compositions of bismaleimide resin composition and epoxy resins have unique heat stability and special utility as insulation for electric conductors to be used in the C. temperature range.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: November 7, 1995
    Assignee: General Electric Company
    Inventors: Mark Markovitz, Jeffrey D. Sheaffer
  • Patent number: 5460885
    Abstract: A high service temperature electrical wiring product comprising a jacketed polyvinyl chloride insulation incorporating a relatively volatile plasticizing system and manufacturing process therefor. The wiring product comprises an electrical conductor and an insulation covering on the conductor having a UL-83 service temperature classification of at least C. The insulation is formed of a primary coating of a polyvinyl chloride resin which contains a relatively volatile plasticizing system for the resin, specifically, one having a vapor pressure at C. of at least 0.3 torr. A jacket surrounding the primary insulation coating is formed of a poly (alkylene terephthalate) having a melt temperature in excess of that of the primary insulation coating.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: October 24, 1995
    Assignee: General Cable Industries, Inc.
    Inventor: Cao Chu-Ba
  • Patent number: 5304740
    Abstract: A fusible link wire for use in an electric circuit comprising a fusible conductor for opening the circuit in response to a given current level, an inner electrical insulation layer surrounding the fusible conductor, a braided sheath positioned over the inner electrical insulation layer for increasing the structural strength of the insulation layer and for holding the inner electrical insulation layer in place in the event of a failure, and an outer protective coating surrounding the sheath and the inner electrical insulation layer for holding the sheath in place during handling or processing of the fusible link wire and for providing protection against the environment.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: April 19, 1994
    Assignee: Essex Group, Inc.
    Inventors: David A. Bozell, Eric W. Bates
  • Patent number: 5280137
    Abstract: A thermoplastic cable and method of manufacture for use in an electrical system comprising a core which comprises a transmission medium, said transmission medium being an insulated metallic conductor or optical fiber, and a jacket which encloses the core and the jacket being co-extruded on the core and comprises an extruded inner layer and an extruded outer layer, with the inner layer being inseparable from and integrally formed with the outer layer.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: January 18, 1994
    Assignee: Cooper Industries, Inc.
    Inventor: Robert E. Ward
  • Patent number: 5256482
    Abstract: A cross-linked polyethylene insulated cable which is prepared by extrusion coating a polyethylene composition on a conductor, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate (hereinafter referred to as VA) content of about 28% to about 33% by weight, the EVA having an average particle diameter of less than 1.7 .mu.m (average of maximum 5 values), and an organic peroxide, and thereafter cross-linking the thus coated polyethylene composition.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: October 26, 1993
    Assignee: Sumitomo Electric Industries
    Inventors: Shosuke Yamanouchi, Sadao Fukunaga, Hironaga Matsubara
  • Patent number: 5124206
    Abstract: An electrically insulated cable uses an insulator comprised of an ethylene-vinyl acetate copolymer and an ethylene-.alpha.-olefin copolymer having a density of 0.91 or more. An electrically insulated cable also uses as an insulator a cross-linked composition made of an ethylene-vinyl acetate copolymer and an ethylene-.alpha.-olefin copolymer.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: June 23, 1992
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hironaga Matsubara, Shosuke Yamanouchi, Yoshiyuki Inoue, Katsuhiro Hosoe
  • Patent number: 5059651
    Abstract: A flame retardant and smoke suppressed polymeric composition comprising a radiation curable copolymer of ethylene and vinyl acetate containing 50-85% by weight of vinyl acetate having intimately admixed therewith a flame retarding and smoke suppressing amount of a finely divided filler mixture consisting essentially of a first filler selected from hydroxides and carbonate of di- and tri-valent metals and a second filler which is zinc borate, the composition may be shaped into a desired article, such as a sheath of an electric wire, which may be radiation cured.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: October 22, 1991
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Keiji Ueno
  • Patent number: 5036121
    Abstract: Flexibilized vinyl halide polymers and copolymers having improved flame retarding and smoke suppressing as well as physical and electrical properties are described. The compositions are characterized by an unusual combination of ingredients comprising a base polymer flexibilized with chlorinated polyethylene, flame and/or smoke suppressants, stabilizers and plasticizers. The compositions exhibit improved flame and smoke suppression and low brittleness temperature over that of conventional fire and smoke suppressed PVC.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: July 30, 1991
    Assignee: The B. F. Goodrich Company
    Inventors: A. William M. Coaker, Josef C. Vyvoda
  • Patent number: 5020741
    Abstract: A multiple blade aircraft propeller hub has a bulkhead supporting concentric slip rings connected by slide blocks to the aircraft electrical system. Electrical conducting flexible leads connect the slip rings to electrical heating elements or de-icing boots carried by the propeller blades. Each of the leads includes an elongated flexible braided copper tube for conducting electricity and which loosely surrounds a flexible multiple strand stainless steel cable, and an extruded flexible vinyl insulating tube loosely surrounds the braided tube. The leads provide for minimizing stresses and metal fatigue in the electrical conducting braided tube with changes in blade pitch and thereby provide for a substantially extended service life.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: June 4, 1991
    Assignee: Hartzell Propeller Inc.
    Inventors: David E. Ziegler, Arthur J. Bowser
  • Patent number: 4937142
    Abstract: A covered lead wire for vehicles, comprising a cover comprising a composition containing;(A) 100 parts by weight of polyvinyl chloride resin;(B) 0.1 part to 10 parts by weight of polyorganosiloxane;(C) at least 30 parts by weight of a plasticizer; and(D) at least 1 part by weight of a stabilizer.The present covered lead wire can achieve good abrasion resistance and scrape resistance even with reduced thickness of the cover, and can meet the recent demands for the weight-saving and improvement of wiring workability.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: June 26, 1990
    Assignee: Shin Etsu Chemical Co., Ltd.
    Inventors: Yoshimi Ogushi, Osamu Matsumoto
  • Patent number: 4913962
    Abstract: This application discloses a cable article comprising a conductor that is at least partially insulated with a flexible composition comprising low density polyethylene and polyvinyl chloride polymer ingredients and an effective amount of an interdispersing agent selected from the group consisting of fibrous polytetrafluoroethylene and ultra high molecular weight polyethylene.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: April 3, 1990
    Assignee: Vulkor Incorporated
    Inventors: Edward V. Wilkus, Alexander F. Wu
  • Patent number: 4910359
    Abstract: Cordage (17) which may be used for any of the commonly marketed lengths of etractile cords comprises an array of a plurality of conductors (11--11) each insulated with a suitable plastic material. The array of conductors is enclosed in inner and outer jackets (52, 54). The inner jacket comprises a polyvinyl chloride (PVC) plastic material, for example, and has a thickness of about 0.015 inch. Covering the inner jacket is an outer jacket comprising a polyvinyl chloride plastic material having a thickness of about 0.005 inch and having a colorant constituent. The PVC composition of the inner jacket is such that it is a less expensive composition than that of the outer jacket. Enclosing the outer jacket is a layer (56) which comprises a top coating material. The top coating material provides the cordage with enhanced retractibility and prevents discoloration as well as plasticizer migration from the outer jacket.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: March 20, 1990
    Assignee: American Telephone and Telegraph Company, AT&T Technologies, Inc.
    Inventors: Timothy S. Dougherty, Robert E. Streich
  • Patent number: 4892683
    Abstract: Flame retardant low smoke PVC-based thermoplastic compositions for use in wire insulation and cable jacketing. The compositions include poly(vinyl chloride), an additional chlorinated resin, tribasic lead sulfate, a molybdenum-containing smoke suppressing material, alumina trihydrate, a brominated aromatic ester plasticizer, at least one additional plasticizer, and at least one lubricant.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: January 9, 1990
    Assignee: Gary Chemical Corporation
    Inventor: Homaira Naseem
  • Patent number: 4847151
    Abstract: The termite repellent and/or the rodent repellent is entrapped in cyclodextrin as a cyclodextrin inclusion compound.The termite repellent may be: for example, a copper compound, such as copper naphthenate, or cuprous oxide; an organic phosphorus insecticide, such as chlorpyrifos, phoxim (i.e., phenylglyoxylonitriloxime O,O-diethyl phosphorothioate), fenitrothion, or prothiophos (CAS No. 34643-46-4); carbamate insecticide, such as carbaryl; pyrethroids insecticide, such as permethrin, or furamethrin.The rodent repellent may be: for example, cycloheximide, i.e., naramycin; or organic tin compound, such as dibutyltin oxide, or dibutyltin laurate.The cyclodextrin inclusion compound of termite repellent and/or rodent repellent and glycitols are mixed with a covering material of the electric wire or cable.The chief ingredient of the covering material is a synthetic resin or synthetic rubber. The synthetic resin may be polyvinyl chloride, or polyethylene.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: July 11, 1989
    Assignee: Japan Liquid Crystal Co., Ltd.
    Inventor: Shibanai Ichiro
  • Patent number: 4840983
    Abstract: An organosilane of the general formula ##STR1## where R denotes a hydrogen or alkyl radical, n is 2 to 5, Ph denotes an aryl radical, and R' denotes an alkyl radical, and the hydrolysis product, a disiloxane, of said organosilanes with water, where said compounds are useful as anit-treeing additives to polyolefin.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: June 20, 1989
    Assignee: Dow Corning Corporation
    Inventor: Gary A. Vincent
  • Patent number: 4806425
    Abstract: High temperature insulated electrical wiring products suitable for use under service temperature classifications of at least C. The product comprises an electrical conductor and a polyvinyl chloride insulation covering on the conductor. The insulation comprises polyvinyl chloride resin having an inherent viscosity within the range of 1.0-1.1 and a polybasic aromatic ester plasticizing system in which the predominant ester component is a dialkyl phthalate ester. Each of the alkyl groups of the ester contains at least 11 carbon atoms. In addition, the insulation contains a higher than normal amount of antioxidant. The insulation should contain at least about 1.5 percent bisphenol A based upon the dialkyl phthalate ester. The plasticizer system may contain only dialkyl phthalate ester or it may contain minor amounts of trimellitate ester.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: February 21, 1989
    Assignee: Capital Wire & Cable Corporation
    Inventor: Cao Chu-Ba
  • Patent number: 4780576
    Abstract: An insulated electrical cable is disclosed, comprising an electrical conductor coated with an insulating layer comprising an ethylene/.alpha.-olefin copolymer having a density of from 0.89 to 0.91 and an ethylene/vinyl acetate copolymer.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: October 25, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Mineya Kuno
  • Patent number: 4769287
    Abstract: An electric cable having at least one conductor and at least one covering therefor obtained from the polymerization of a silanic monomer of a compound comprising a non-cross-linked base-polymer and a polymerizable silanic monomer present prior to polymerization in a quantity not less than 5 parts by weight with respect to 100 parts by weight of the base-polymer. Thepolymerization of the silanic monomer units forms a polymeric mesh which is closely interconnected and thoroughly compenetrated into the non-cross-linked base-polymer. In one embodiment the polymeric mesh may be grafted onto the base-polymer through the addition of an organic peroxide. Thus, there is provided an electric cable for use as building wires wherein the conductor covering is not cross-linked but is heat resistant to temperatures above the deformation temperature of the base-polymer.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: September 6, 1988
    Assignee: Societa' Cavi Pirelli S.p.A.
    Inventors: Antonio Zaopo, Flavio Casiraghi, Alessandro Secco
  • Patent number: 4637955
    Abstract: High strength, flexible compositions with improved mechanical properties at elevated temperatures for wire insulation coatings and other shaped articles used in hostile environments are disclosed, consisting of a high temperature fluorocarbon polymer, such as an ethylene-tetrafluoroethylene copolymer or the like, and from about 1% wt. to about 50% wt. of a polyvinylidene fluoride compound.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: January 20, 1987
    Assignee: High Voltage Engineering Corporation
    Inventor: Frank J. Glaister
  • Patent number: 4584241
    Abstract: The epoxy resin stabilizing systems in combination with cadmium containing stabilizers employed in PVC compounds are replaceable without affecting other properties of the polymer by utilizing a specific additive mixture. In particular, a complex ester of oleic acid and a diglycerol ester of oleic acid are employed in conjunction with a calcium-zinc composition. The resulting system yields excellent processing and long-term stability without significantly affecting other properties such as color stability and flame retardancy.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: April 22, 1986
    Assignees: AT&T Technologies, AT&T Bell Laboratories
    Inventors: Jae H. Choi, Larry E. Fortner, John J. Mottine, Jr., William C. Vesperman
  • Patent number: 4574111
    Abstract: The invention relates to electric insulation of polyolefin suitable for medium and high voltage from about 10 kV which resists the formation of so-called water trees. For this purpose, the insulation contains as an additive at least one alcoholate of magnesium, calcium or aluminum. The electric insulation according to the invention is particularly suitable for use in cables and wires.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: March 4, 1986
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Joachim Henkel, Norbert Muller
  • Patent number: 4562302
    Abstract: 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: Grant
    Filed: December 21, 1982
    Date of Patent: December 31, 1985
    Assignee: Northern Telecom Limited
    Inventors: John A. Checkland, Leo V. Woytiuk
  • Patent number: 4543381
    Abstract: An unfilled polymeric composition having improved electrical treeing and water treeing properties comprising a polymeric component and effective amounts of a silane and a fatty acid. The compositions are particularly useful as insulation for high voltage transmission and distribution cables.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: September 24, 1985
    Assignee: National Distillers and Chemical Corporation
    Inventors: Anthony Barlow, Melvin F. Marginger
  • Patent number: 4536530
    Abstract: Organophosphorus compounds having the general formula ##STR1## useful as water tree resistant additives for polymeric compositions.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: August 20, 1985
    Assignee: National Distillers and Chemical Corporation
    Inventors: Anthony Barlow, Melvin F. Maringer
  • Patent number: 4501928
    Abstract: A shielding tape comprising a lead foil having a layer of vinyl chloride polymer on its one surface and having on the other surface thereof a layer of vinyl chloride polymer and a layer of an adhesive not reaction-curable formed over the latter layer. Also disclosed is an electric cable comprising a sheath of vinyl chloride polymer and a water impermeable layer provided by a shielding tape having the same structure as above and longitudinally placed beneath the sheath. With an adhesive of the above-mentioned type, the sheath is adhered to the underlying vinyl chloride polymer layer of the tape, and the polymer layers of the tape are also adhered to each other at the lap of the tape.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: February 26, 1985
    Assignee: Dainichi-Nippon Cables, Ltd.
    Inventor: Masami Ishitobi
  • Patent number: 4486623
    Abstract: Described is a high-flex insulated electrical cable (11) for the carriages of flat knitting machines, this cable having two concentric multi-strand twisted layers (12, 13) each of which is comprised of a plurality of insulated individual strands (17) laid in long lay at the same twist angle.To enable a cable (11) of this nature to resist torsional stresses to an increased degree while retaining its shape and also to give it an extended length of life despite such torsional stresses, the individual strands (17) of each layer (12, 13) have an outer peripheral layer of resiliently deformable soft plastic (18, 19) injected therearound which penetrates into the gussets (22) which are formed between the individual strands (17).
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 4, 1984
    Assignee: H. Stoll GmbH and Company
    Inventor: Jurgen Ploppa
  • Patent number: 4447472
    Abstract: A method of improving the physical and electrical properties of polymer insulation coated electrical conductors is described. A non-ionic surfactant added to an organic solvent solution of insulation polymer followed by coating the solution on the wire, drying and curing, has been found to produce a coated magnet wire with improved concentricity and smoothness, therefore resulting in improvement in other wire properties as well.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: May 8, 1984
    Assignee: Essex Group, Inc.
    Inventors: Michael G. Minnick, James J. Connell, Charles W. McGregor
  • Patent number: 4426549
    Abstract: Track and erosion resistant electrical insulating materials are disclosed comprising (a) a base insulating material comprising a polymer of ethylene and additives necessary to allow the polymer to function as electrical insulation, and (b) hydrated zinc borate as an anti-tracking and anti-erosion additive. The hydrated zinc borate functions to increase the track and erosion resistance of the electrical insulating material in concentrations of as little as 1% by weight of the entire material with its maximum effect being achieved at concentrations of about 25% by weight of the entire material.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: January 17, 1984
    Assignee: High Voltage Engineering Corporation
    Inventor: Gary S. Natwig
  • Patent number: 4412094
    Abstract: A cable which is suitable for use as a riser cable in buildings comprises a plurality of conductors each of which is covered with a composite insulation. The composite insulation comprises an inner layer of an expanded polyethylene material and an outer layer of a polyvinyl chloride material with the percent expansion of the inner layer and the thickness of the outer layer being such as to optimize several cable parameters. The resultant cable is one which has excellent fire-retardant properties such as, for example, an unusually low fuel content. Advantageously, this same cable lends itself to color coding for inside wiring and is capable of having a relatively high pair count density. All these parameters are optimized within the framework of specific transmission requirements.
    Type: Grant
    Filed: July 28, 1981
    Date of Patent: October 25, 1983
    Assignee: Western Electric Company, Inc.
    Inventors: Timothy S. Dougherty, John J. Kissell, Glenn L. Schmehl
  • Patent number: 4322575
    Abstract: The invention concerns a novel cladded elongate substrate such as a jacketed cable, the cladding being flame retarded and comprising a vinyl acetate/alkene copolymer composition incorporating a halogen-free inorganic flame retardant. The composition is characterized by a high content of vinyl acetate and/or the presence of a polyalkene or alkene/alkene copolymer blended with the vinyl acetate/alkene copolymer.
    Type: Grant
    Filed: November 15, 1979
    Date of Patent: March 30, 1982
    Assignee: Raychem Limited
    Inventor: Richard S. Skipper
  • Patent number: 4292463
    Abstract: An improved corrosion resistant cable shielding tape adapted for use in electrical power and communications cables comprising a metal strip having a deformation resistant layer of polymeric resinous material tightly adhered to at least one side thereof, the deformation resistant layer having a deformation temperature of at least about F. The deformation resistant layer resists abrasion and penetration at the temperatures and pressures normally associated with cable manufacture, installation and/or service use. The deformation resistant layer must be tightly adhered to the metal strip to prevent delamination when exposed to a corrosive environment and to the mechanical forces exerted by metal corrosion products, thereby restricting the path of corrosive attack to the exposed metal edges of the shielding tape. Additional layers of polymeric resinous materials may be included in the multilayered structure of the cable shielding tape such as adhesive and/or heat seal layers.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: September 29, 1981
    Assignee: The Dow Chemical Company
    Inventors: Kenneth E. Bow, Thomas H. Lyon
  • Patent number: 4273829
    Abstract: An insulated electrical conductor is provided that exhibits excellent physical, electrical and chemical protection for wire and cable and is particularly suitable for use in aircraft applications. The electrical conductor is insulated with (A) a film selected from ethylene tetrafluoroethylene copolymer film and fluorinated ethylene-propylene (FEP) copolymer coated polyimide film and (B) a topcoat insulation system comprising (a) a first layer of polyimide, (b) a second layer of polyvinylidene fluoride, and (c) a third layer of crosslinked acrylic polymer.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: June 16, 1981
    Assignee: Champlain Cable Corporation
    Inventor: Aime J. Perreault
  • Patent number: 4168251
    Abstract: A method of forming an electrically insulating material having good mechanical properties by mixing a polyvinyl chloride polymer with a natural cellulose material in an amount of from 25 to 30% by weight to form a substantially homogeneous mixture consisting essentially of the polyvinyl chloride and natural cellulose material.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: September 18, 1979
    Assignee: Rehau Plastiks AG & Co.
    Inventors: Hartmut Schinzel, Ernst Wunderlich
  • Patent number: 4154892
    Abstract: Plasticized polymeric compositions based on vinyl chloride polymers and particularly useful as sheathings for electric cables and for similar applications are disclosed. The compositions contain very small amounts, from 0.05 to 3.0 parts, preferably from 0.05 to 1.0 part by weight of SiO.sub.2, very small amounts, from 0.0005 to 1.0 preferably from 0.001 to 0.5 part by weight of a phenol-type antioxidant, and optionally but not necessarily small amounts, from 0.5 to 4.0 parts, preferably from 0.05 to 2.0 parts, by weight of oxides and/or hydroxides of magnesium, aluminum, zinc and alkaline earth metals.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: May 15, 1979
    Assignee: Montedison S.p.A.
    Inventors: Flaviano Glatti, Gastone Slongo
  • Patent number: 4150190
    Abstract: A method of coating conductors with polyvinyl formal dissolved in a solvent comprising certain monoalkyl ethers of diethylene glycol and triethylene glycol or the monophenyl ether of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol or propylene glycol. In some cases it is necessary to have a diluent such as an aromatic hydrocarbon present.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: April 17, 1979
    Assignee: Schenectady Chemicals, Inc.
    Inventors: George A. Walrath, John T. Keating
  • Patent number: 4126568
    Abstract: Flexible polyvinyl chloride insulation for wire is made conductive at elevated temperatures activating a sensing conductor and eliminating thermostatic controls. Conduction through the insulation is imparted by adding compounds such as nonylphenoxy poly (ethyleneoxy) ethanol, certain metallic salts of alcohol sulfates, mixed ortho, parasulfonamides, and liquid crystal compounds.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: November 21, 1978
    Assignee: Continental Oil Company
    Inventor: Charles H. Rogers
  • Patent number: 4107383
    Abstract: Coconut shell flour is used as a filler in insulating compositions containing coconut shell flour filler for electric cables.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: August 15, 1978
    Inventor: Brian C. Reid
  • Patent number: 4098711
    Abstract: Flexible polyvinyl chloride insulation for wire is made conductive at elevated temperatures activating a sensing conductor and eliminating thermostatic controls. Conduction through the insulation is imparted by adding compounds such as nonylphenoxy (ethyleneoxy) ethanol, certain metallic salts of alcohol sulfates, mixed ortho, parasulfonamides, and liquid crystal compounds.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: July 4, 1978
    Assignee: Continental Oil Company
    Inventor: Charles H. Rogers
  • Patent number: 4085249
    Abstract: A semiconductive composition having controlled strippability from cross-linked ethylene polymer based insulation compositions and comprising chlorinated ethylene-vinyl acetate copolymer containing about 3 to 40 percent by weight of chlorine and conductive carbon black.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: April 18, 1978
    Assignee: Nippon Unicar Company Limited
    Inventors: Seiho Taniguchi, Yoichi Kawasaki, Shin' Ichi Sugawara
  • Patent number: 4020213
    Abstract: An electrical conductor is advanced along a path and is preheated to within a controlled temperature range. A reaction mixture is extruded about the conductor, the preheat of which causes the reaction mixture to release a reaction product that etches the surface of the conductor. This results in an insulated conductor unexpectedly having desired adhesion values of the insulation to the conductor without degrading the overall physical and mechanical properties of the insulation. In one usage, the reaction mixture is plasticized polyvinyl chloride with hydrochloric acid being released to perform the etching.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: April 26, 1977
    Assignee: Western Electric Company, Inc.
    Inventors: Sven Raymond Berglowe, Jr., Earl Salvator Sauer
  • Patent number: 3953650
    Abstract: A line cord of a telephone handset having individually insulated conductors is jacketed with an extrudable flexible clear flame retardant composition which includes a polyvinyl chloride resin (PVC), 10 to 55 parts by weight per 100 parts by weight of the PVC of a phthalate plasticizer, 3 to 50 parts by weight per 100 parts by weight of the PVC of a phosphate plasticizer, 2 to 5 parts by weight per 100 parts by weight of the PVC of a metallic stabilizer, 0.25 to 1.0 part by weight per 100 parts by weight of the PVC of a lubricant, 0.25 to 1.0 part by weight per 100 parts by weight of the PVC of an ultraviolet absorber, 1 to 4 parts by weight per 100 parts by weight of the PVC of an epoxy resin, and 1 to 8 parts by weight per 100 parts by weight of the PVC of an epoxy plasticizer.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: April 27, 1976
    Assignee: Western Electric Company, Inc.
    Inventors: Earl Salvator Sauer, William Charles Vesperman