Protected By Nonconductive Layer Patents (Class 174/107)
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Patent number: 5475185Abstract: A shielded cable is disclosed having metal coated aramid fibers as the shielding.Type: GrantFiled: April 1, 1992Date of Patent: December 12, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward W. Tokarsky
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Patent number: 5473113Abstract: The present invention features a shielded wire and cable article capable of meeting stringent aerospace specifications and requirements, particularly those pertaining to low weight and high temperature. The article generally consists of an inner conductive core of one or more wires that can be twisted or braided and which can be individually insulated. The conductive core is surrounded by one or more thin layer(s) of insulation about which the shielding of this invention is overlaid. The shielding is made of a woven, braided or served mesh or woven yarn of metal-coated high-performance fibers. The fibers of the mesh or yarn are characterized by high-tensile strength and flexibility and are operative at high temperatures, equal to or exceeding 150.degree. C. When the fibers themselves are braided, the resulting mesh can be braided even more tightly about the interior insulation surface than can conventional meshes.Type: GrantFiled: September 22, 1992Date of Patent: December 5, 1995Assignee: Champlain Cable CorporationInventor: Mahmoud Aldissi
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Patent number: 5451718Abstract: A power cable for use in high moisture and chemically corrosive environments has a longitudinally-folded sheath for encapsulating one or more electrical conductors. A plurality of overlapping folds at the longitudinal edges of the sheathing material creates a labyrinth-type sealing joint for maintaining moisture and gas integrity of the cable. A sealant is provided within the circumferential and radial spaces defined by the overlapping folds of the joint.Type: GrantFiled: April 8, 1993Date of Patent: September 19, 1995Assignee: Southwire CompanyInventor: Mark D. Dixon
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Patent number: 5417017Abstract: A barrier to termites particularly suitable for protecting buildings comprising a mesh made of a material that is resistant to breakdown in the environment of use and is resistant to secretions deposited by termites, such as stainless steel, and is also sufficiently hard to not be attacked by termites, such as having a hardness not less than about Shore D70. The pores of the mesh being dimensioned so the maximum linear dimension in any direction of the pores is less than the maximum linear dimension of the cross-section of the head of the species of termite to be controlled.Type: GrantFiled: March 30, 1993Date of Patent: May 23, 1995Assignee: Termi-Mesh Aust. Pty. Ltd.Inventor: Vasilios Toutountzis
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Patent number: 5416269Abstract: An insulated cable which combines good roundness and good strippability includes one or more insulated conductors, an inner lining of polymeric tape wrapped around the conductors, and an outer jacket of polymeric insulation melt extruded around the inner lining. The level of adhesion between the inner lining and the conductors is less than the level of adhesion between the inner lining and the outer jacket. The insulated cable is particularly useful in anti-lock braking systems. A process for making the cable is also disclosed.Type: GrantFiled: November 1, 1993Date of Patent: May 16, 1995Assignee: Raychem CorporationInventors: John L. Kemp, Alan S. Yeung
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Patent number: 5408049Abstract: An electrical system comprises an inverter, a three-phase electric motor and a cable to transfer energy from the inverter to the motor. The cable further comprises a center conductor and two additional conductors disposed about the center conductor. Insulators physically and electrically separate the conductors from one another. Electromagnetic emissions from the cable are substantially prevented due to the construction of the cable.Type: GrantFiled: November 1, 1993Date of Patent: April 18, 1995Assignee: Ford Motor CompanyInventors: Allan R. Gale, Michael P. Ciaccio, Jerry E. Amey
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Patent number: 5389736Abstract: In known cables, the cable core is surrounded by a metallic inner layer of a sheath, and the inner layer is enclosed by a corrugated metallic outer layer of the sheath. In these cables, a high resistance against corrosion and high temperatures at a good shielding of the electric conductors is not ensured.The new cable (1) including the inner sheath layer (19) which is made of at least one flexible copper band (11) and defined by an electromagnetic shielding with a shielding attenuation from 80 to 115 dB, with the shield attenuation in this range being dependent from the wall thickness of the inner layer and rising monotonously with increasing wall thickness, and the outer sheath layer (27) which is made of a steel band and increases the high temperature resistance of the cable 1, has the advantages of a good temperature resistance even at high ambient temperatures, like e.g. in case of fire, and a high resistance with regard to corrosion.Type: GrantFiled: July 22, 1993Date of Patent: February 14, 1995Assignee: Kabelmetal Electro GmbHInventors: Gerhard Ziemek, Helmut Hildebrand
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Patent number: 5384429Abstract: A coaxial cable (10) is for use in a power distribution network (N). The cable connects a surge protective device (SPD) in parallel with feeder lines (W1, W2) of the network. The SPD senses voltage surges on the feeder lines and clamps the voltages to a level at which loads (LD) connected downstream of the SPD are protected from excessive voltage levels. An inner conductor (12) and an outer conductor (14) have a dielectric material (16) separating them. The inner conductor is a round conductor, and the outer conductor forms a hollow cylinder in which the inner conductor and insulation material fit. A ratio of the inner diameter (D) of the outer conductor to the diameter (d) of the inner conductor is approximately 1.05. Thus, the diameter of the inner conductor is relatively large compared with the inner diameter of the outer conductor. A relatively large diameter of the inner conductor serves to minimize the dc resistance of the cable. Also, the dielectric material has a permittivity in the range of 2.0-4.0.Type: GrantFiled: June 24, 1993Date of Patent: January 24, 1995Assignee: Emerson Electric Co.Inventors: Jeffry M. Bulson, C. Peter Rau
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Patent number: 5373100Abstract: A communication cable includes a core comprising at least one transmission medium and a sheath system which is disposed about the core. Means are disposed within the cable for preventing the longitudinal migration of water through the cable core, said means including both a hydrophilic material and a hydrophobic material in cooperative communication with each other. Specifically, a hydrophilic, water-absorptive material is supported by a yarn which is helically wrapped about various sections of the communication core. In a copper cable, the water-absorptive yarn may be wrapped about individual twisted pair conductors or a unit consisting of a plurality of twisted pair conductors or the cable core itself. In addition to the helically-wrapped, water-absorptive yarn, the cable of the present invention includes a hydrophobic, water-blocking material interdisposed to fill all voids and interstices within the communication core.Type: GrantFiled: November 3, 1993Date of Patent: December 13, 1994Assignee: AT&T Corp.Inventors: Candido J. Arroyo, David S. Hancock, John F. Malluck, David M. Mitchell, Jim J. Sheu
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Patent number: 5321202Abstract: A shielded electric cable having a core including an insulated conductor. A first shielding member formed of an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon is applied longitudinally to the core and wrapped circumferentially therearound forming two concentric substantially closed shielded layers. A layer of foam material surrounds the first shielding member and a second shielding member surrounds the foam layer, the second shielding member being formed of non-braided metallic material. The shielded electric cable is provided with an outer jacket of non-conducting material and having an appropriate O.D. for receiving a standard connector.Type: GrantFiled: October 21, 1992Date of Patent: June 14, 1994Inventor: Ralph D. Hillburn
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Patent number: 5310964Abstract: A cable comprising a core enclosed in an external sheath of a char-forming low-smoke-and-fume composition is characterized by a tape of flexible mineral material, preferably a woven glass-fiber tape, wrapped round the core and by an adhesive bonding the tape to the sheath. Hot-melt adhesives based on ethylene/vinyl acetate copolymers with tackifier resins are suitable. By bonding the sheath to the underlying tape, retention of the charred remains of the sheath under fire conditions is considerably improved with consequent improvements in flame retardance, smoke levels and fire survival.Type: GrantFiled: July 23, 1992Date of Patent: May 10, 1994Assignee: BICC Public Limited CompanyInventors: David G. Roberts, Mark S. Lloyd
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Patent number: 5304739Abstract: Commercially available coaxial cables have been used successfully in single shot electromagnetic launcher and other pulsed power applications. The use of a coaxial cable interface between power source and pulsed power load reduces external magnetic fields and also aids in standardizing the interface, enhancing inter-changeability between a variety of power supplies and loads. As pulsed power systems continue to become more energetic and as the importance of repetitive operation increases, the use of commercially available cables becomes impractical because of the large number required for appropriate energy transfer. The cable according to the invention overcomes many problems encountered in the use of conventional cables. It incorporates a large area, flexible conductor in both the current feed and current return path, and matches these conductor cross-sections to provide uniform current paths.Type: GrantFiled: December 19, 1991Date of Patent: April 19, 1994Inventors: Reja B. Klug, Richard D. Ford, Keith A. Jamison, Ronald E. Stearns
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Patent number: 5303630Abstract: A double serve jacketed cable that has a plurality of insulated conductors. The double serve has an outer serve wound around an inner serve and the inner and outer serve are interconnected to form a longitudinally extending french braid.Type: GrantFiled: April 28, 1992Date of Patent: April 19, 1994Assignee: Belden Wire and Cable CompanyInventor: Gerald W. Lawrence
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Patent number: 5300760Abstract: An electrical device, particularly a self-regulating strip heater, has improved thermal efficiency, good mechanical properties, and acceptable resistance to water penetration when an outer insulating layer is applied in a way that it penetrates the interstices of a braid surrounding the heater. Appropriate penetration may be achieved by pressure-extruding the outer jacket over the braid.Type: GrantFiled: January 21, 1992Date of Patent: April 5, 1994Assignee: Raychem CorporationInventors: Neville S. Batliwalla, Amitkumar N. Dharia, Randall M. Feldman, Ashok K. Mehan
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Patent number: 5286923Abstract: One embodiment comprises:two bare parallel conductors made of bronze;two insulating rods that are substantially helically wound with non-touching turns around the conductors respectively so that the rods interfit and maintain a predetermined distance between the two conductors; andan insulating protective sheath.The helical pitch of the rods is much greater than the cross-section of the rods so the volume between the two conductors is mostly full of air, thereby obtaining reduced permittivity and thus increased propagation velocity. The invention is applicable to data transmission cables for computer machines.Type: GrantFiled: November 13, 1991Date of Patent: February 15, 1994Assignee: FilotexInventors: Daniel Prudhon, Victor Da Silva, Pierre Frieden
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Patent number: 5281757Abstract: An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield layer around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip. The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions. A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.Type: GrantFiled: August 25, 1992Date of Patent: January 25, 1994Assignee: Pirelli Cable CorporationInventors: Carlo Marin, Fabrizio Marciano-Agostinelli, Paul K. dePratter, Frank L. Kuchta
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Patent number: 5270486Abstract: An insulated conductor (20) for use in a communication cable which includes a filling material (30) includes a copper conductor (25) and a composite insulation system (27) comprising two concentric layers of insulation. An inner foam layer (28) of the insulation comprises a cellular plastic material (28) which includes a stabilizer system. An outer layer (29) of the insulation is referred to as a skin and comprises a stabilized solid plastic material. The stabilizer system in each of the cellular and solid layers includes a bifunctional portion that functions as an antioxidant and as a metal deactivator and that has a relatively high resistance to extraction. The level of the bifunctional portion of the stabilizer in the cellular material is substantially greater than that in the skin inasmuch as it has been found that the level of the stabilizer cellular layer contiguous to the copper wire determines the oxidation performance level of the composite insulation.Type: GrantFiled: May 29, 1992Date of Patent: December 14, 1993Assignee: AT&T Bell LaboratoriesInventors: Maureen G. Chan, Kent B. Connole, Timothy S. Dougherty, Karen D. Dye, Stanley Kaufman, Valerie J. Kuck, Leonard D. Loan, deceased, Edward D. Nelson, Raffaele A. Sabia
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Patent number: 5264251Abstract: An aramid yarn, preferably poly(p-phenylene terephthalamide), is coated with a water swellable superabsorbent material. The swelling value of the yarn is at least 60. The superabsorbent provides water blocking capability to the yarn, so that it is suitable for use as a strength member, for example, in water tight optical communication cables. The yarn is made by successively treating an aramid yarn with a water-in-oil emulsion, a superabsorbent material being present in the water phase of the emulsion, and removing the liquid components from the treated yarn by evaporation.Type: GrantFiled: October 23, 1991Date of Patent: November 23, 1993Assignee: Akzo N.V.Inventors: Herman J. Geursen, Stephanus Willemsen
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Patent number: 5262592Abstract: The present invention features a new "filter line" cable having a shield layer of metallized, high-tensile strength fibers. The filter line cable has a conductive core having a primary insulation layer. Over the primary insulation is a filtering layer made up of ferromagnetic particles (ferrite o magnetite) within a polymeric matrix such as Viton, a fluorinated elastomeric polymer. The filtering layer provides the "filter line" protection against internal RFI and microwave interferences traveling down the wire. A shield of metal-coated, high-tensile strength fibers (such as nylon, aramid, etc.) is woven or served to provide a flexible mesh layer of about 95% coverage; this is placed over the filtering layer. The shield layer provides protection against external EMI interference signals. An insulating-jacket layer is placed over the shield layer; it is made of materials such as Teflon, Kapton, fluorinated polyethylenes, carbon-filled fluorinated polyethylenes and combinations thereof, etc.Type: GrantFiled: June 19, 1992Date of Patent: November 16, 1993Assignee: Champlain Cable CorporationInventor: Mahmoud Aldissi
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Patent number: 5253317Abstract: A non-halogenated cable for use in an electronic system having a core which includes a transmission medium, the transmission medium being a metallic or optical fiber conductor having thereon an insulating layer of non-halogenated polyethersulfone polymer composition, and a non-halogenated jacket which enclosed the core and the transmission medium, said non-halogenated jacket being a single layer of insulating material.Type: GrantFiled: November 21, 1991Date of Patent: October 12, 1993Assignee: Cooper Industries, Inc.Inventors: Richard C. Allen, James P. Graf
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Patent number: 5233902Abstract: A sliding breech block system and method for repetitive firing of electrothermal cartridges in an electrothermal gun are provided. The sliding breech block system comprises a high-power, low resistance, flexible coaxial cable which is routed through a sliding breech-block, a pulse-forming network, and two groups of bristles for conducting the pulses from the breech block to the electrothermal cartridge. The power cable comprises two layers of individually insulated, multi-strand wires both within a jacket of braided wire. The method for repetitively igniting an electrothermal gun comprises the steps of fixedly attaching tightly-packed, brass bristles to the electrothermal cartridge conductors, sliding the breech-block into position so that its surface contacts the brass bristles of the cartridge, and supplying an electrical current from the pulse-forming network to the cartridge by means of a flexible high-power cable.Type: GrantFiled: May 11, 1992Date of Patent: August 10, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventor: Jack S. Bernardes
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Patent number: 5227586Abstract: The disclosure herein describes a flame resistant electric cable which is capable of resisting flame temperatures in the neighborhood of 1000.degree. C. for at least two hours; the cable comprises an electrical conductor including an electrical wire, an extruded elongate tubular member made of silicone surrounding the electrical wire, and an outer protective layer of braided inorganic material which surrounds the tubular member; an overall outer braided jacket surrounds the electrical conductor.Type: GrantFiled: October 7, 1991Date of Patent: July 13, 1993Assignee: Harbour Industries, (Canada) Ltd.Inventor: Mark Beauchamp
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Patent number: 5218167Abstract: A cable assembly has a cable of conductor assemblies within an insulating envelope, a conducting shield disposed around the cable, a grounding wire outside the shield extending along the length of the shield and in continuous contact with the shield, and an insulating and weatherproof jacket enclosing the shield and the grounding wire. A method for using the cable assembly to connect a satellite television antenna to a receiver in a remote building, providing protection from ground induced lightning, is also disclosed.Type: GrantFiled: September 17, 1990Date of Patent: June 8, 1993Inventor: Samuel N. Gasque, Jr.
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Patent number: 5216202Abstract: A metal-shielded cable includes a core made of insulated wires each having a conductor coated with an insulation layer. The core is surrounded with a composite metal shield which includes a laminated metal-plastic layer and a shield layer. The shield layer includes a tape formed of woven filaments, which is wound around or aligned longitudinally along the core of the cable.Type: GrantFiled: August 21, 1991Date of Patent: June 1, 1993Assignees: Yoshida Kogyo K.K., Hitachi Cable Ltd.Inventors: Tokuji Yoshida, Kiyomitsu Asano, Tokugoro Mizukami, Katsuo Endo, Nobuhito Akutsu
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Patent number: 5210377Abstract: A crush-resistant high signal propagation velocity coaxial cable insulated with a low-density expanded PTFE insulation surrounded by an extruded closed-cell polymer foam.Type: GrantFiled: January 29, 1992Date of Patent: May 11, 1993Assignee: W. L. Gore & Associates, Inc.Inventors: Francis A. Kennedy, William G. Hardie, Jack J. Hegenbarth
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Patent number: 5204175Abstract: A water absorptive fabric including a layer of a water absorptive polymer whose major components consist of a cross-linked poly(metal salt of acrylic acid) and a water-soluble resin. The fabric may be produced by first impregnating a fabric substrate with a solution which contains a metal salt of acrylic acid in the form of a monomer, a cross-linking agent and a water-soluble resin, and then heating the impregnated fabric substrate to thereby copolymerize the monomer and the cross-linking agent, in the presence of the water-soluble resin.Type: GrantFiled: June 7, 1991Date of Patent: April 20, 1993Assignees: Tokai Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Masanari Umeda, Yukio Sakuraba, Hiroshi Baba
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Patent number: 5188883Abstract: A composite tape structure having a metal tape layer and a layer of swellable water blocking material, the two layers bonded together face-to-face. The tape structure is for use as a composite shield and water blocking structure surrounding the core of a cable, preferably a telecommunications cable. One edge region of the metal tape layer may extend beyond the layer of water blocking material so that overlapping edges of the metal tape layer confront each other for bonding purposes when used as a shield. The layer of water blocking material may be formed from tape impregnated with or provided with a particulate swellable material, or the particulate material may be applied directly to and bonded to the metal tape layer.Type: GrantFiled: June 3, 1991Date of Patent: February 23, 1993Assignee: Northern Telecom LimitedInventor: Michael G. Rawlyk
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Patent number: 5180884Abstract: The present invention features a shielded wire and cable article capable of meeting stringent aerospace specifications and requirements, particularly that of low weight. The article generally comprises an inner conductive core of one or more wires that can be bare or individually insulated, and that can be straight, twisted or braided within the core. The core can also comprise a multicore consisting of a plurality of core members. The conductive core is surrounded by one or more thin layer(s) of insulation about which the shielding of this invention is applied. The shielding comprises a braided or served mesh or woven yarn of metallically coated fibers, characterized by high tensile strength and flexibility. Where the fibers themselves are braided, the resulting mesh can be braided more tightly about the interior insulation surface than can conventional meshes.Type: GrantFiled: November 18, 1991Date of Patent: January 19, 1993Assignee: Champlain Cable CorporationInventor: Mahmoud Aldissi
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Patent number: 5169716Abstract: The invention provides an encapsulant composition capable of use with signal transmission devices, such as electrical or optical cable. The composition is the extended reaction product of an admixture of an anhydride functionalized composition and a crosslinking agent.Type: GrantFiled: May 11, 1989Date of Patent: December 8, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas S. Croft, Hartwick A. Haugen
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Patent number: 5156155Abstract: A shaft for an invasive probe used for medical applications which includes a central core, a metal sheath surrounding the core and an outer elastomeric coating. A dielectric sleeve is disposed between the core and sheath for electrically isolating the core from the sheath. A dielectric spacer used in conjunction with a fitting disposed at the end of the shaft completely seals the core from other portions of the probe to protect the patient from electrical currents carried by wires within the core. The wires are also protected from damage from bodily fluids and cleaning solutions by the dielectric sleeve and spacer, since the core is sealed from the environment.Type: GrantFiled: July 25, 1990Date of Patent: October 20, 1992Assignee: Hewlett-Packard CompanyInventor: Robert W. King
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Patent number: 5149915Abstract: A multi-conductor hybrid cable construction includes a plurality of inner signal conductors. A unitary dielectric member surrounds, insulates, spaces and joins the inner signal conductors in a circular array about the axis of the cable. An inner conductive shield is disposed about the unitary dielectric member and the surrounded inner conductors. A plurality of outer data conductors are arranged circumferentially about the inner conductive shield. An outer conductive shield is disposed about the outer data conductors. A central dielectric filler is disposed inside the unitary dielectric member, and an insulating jacket is disposed about the outer conductive shield forming the outside of the cable.Type: GrantFiled: June 6, 1991Date of Patent: September 22, 1992Assignee: Molex IncorporatedInventors: David L. Brunker, Burke J. Crane, John E. Lopata
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Patent number: 5142121Abstract: According to the method for terminating a cable and the apparatus used therefor of the present invention, first the thermosetting resin layer of the cable is heat-cured, for example, by laser beam. The heat-cured thermosetting resin layer is lowered in stress and strain at rupture and hence can be easily cut and then this thermosetting resin layer is cut and peeled off.Type: GrantFiled: September 20, 1990Date of Patent: August 25, 1992Assignee: Hitachi, Ltd.Inventors: Satoru Ezaki, Kiyofumi Tanaka
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Patent number: 5122622Abstract: An electrical cable includes a central bearing part having a plurality of high-tensile plastic filaments. A rubber sheathing encloses the bearing part. An inner and outer conductor are twisted onto the sheathed bearing part and are disposed concentrically to one another. The inner and outer conductors each include stranded wires. The stranded wires of the inner conductor, as well as the stranded wires of the outer conductor, are twisted together to form a lay. The stranded wires of the inner conductor have the same number of lays as the stranded wires of the outer conductor but with opposite directions of lay. An inner separation layer covers the inner conductor and an outer separation layer covers the outer conductor. Additionally, a rubber insulation layer covers the outer separation layer. Finally, an outer covering encloses the outer separation layer.Type: GrantFiled: February 13, 1991Date of Patent: June 16, 1992Assignee: Siemens AktiengesellschaftInventors: Thomas Reuss, Klaus Lotter
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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: 5111032Abstract: An electrical device, particularly a self-regulating strip heater, has improved thermal efficiency, good mechanical properties, and acceptable resistance to water penetration when an outer insulating layer is applied in a way that it penetrates the interstices of a braid surrounding the heater. Appropriate penetration may be achieved by pressure-extruding the outer jacket over the braid.Type: GrantFiled: March 13, 1989Date of Patent: May 5, 1992Assignee: Raychem CorporationInventors: Neville S. Batliwalla, Amitkumar N. Dharia, Randall M. Feldman, Ashok K. Mehan
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Patent number: 5110999Abstract: The invention provides a compact, circular, flexible, and shielded twin-axial, multi-stranded power cable for transferring current instantaneously and with uniform density substantially free from phase delays at 60 Hz. between a high current power amplifier and a standard three-hole 112 volt AC outlet achieving a pure and powerful bass response and clear, brilliant noise-free highs. The cable has two bundles of five insulated conductors helically and symmetrically wrapped around a dielectric center. The gauge of each conductor and total cross-sectional area of the bundled conductors are predetermined to avoid internal inductance and phase delay effects while providing high current instantaneously and uniformly in high-end audio power applications. In between the bundles are located ground wires which run the length of the cable. The bundles and ground wires are spirally twisted around each other for structural integrity and for a generally round cross-sectional shape.Type: GrantFiled: December 4, 1990Date of Patent: May 5, 1992Inventor: Todd Barbera
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Patent number: 5107076Abstract: A composite dielectric coaxial cable which is easily hand-strippable for termination without disturbing its drain wire or unravelling the metallized tape comprising its shielding layer.Type: GrantFiled: January 8, 1991Date of Patent: April 21, 1992Assignee: W. L. Gore & Associates, Inc.Inventors: Roddy M. Bullock, Alfredo Cedrone
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Patent number: 5103067Abstract: The present invention features a shielded wire and cable article capable of meeting stringent aerospace specifications and requirements, particularly that of low weight. The article generally comprises an inner conductive core of one or more wires that can be bare or individually insulated, and that can be straight, twisted or braided within the core. The core can also comprise a multicore consisting of a plurality of core members. The conductive core is surrounded by one or more thin layer(s) of insulation about which the shielding of this invention is applied. The shielding comprises a braided or served mesh or woven yarn of metallically coated fibers, characterized by high tensile strength and flexibility. Where the fibers themselves are braided, the resulting mesh can be braided more tightly about the interior insulation surface than can conventional meshes.Type: GrantFiled: April 25, 1991Date of Patent: April 7, 1992Assignee: Champlain Cable CorporationInventor: Mahmoud Aldissi
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Patent number: 5095176Abstract: An aerial cable (20) includes a transmission portion and a supporting portion. The transmission portion includes a core (21) comprising at least one transmission medium enclosed in a relatively flexible dielectric wrapping material (23). The wrapping material is enclosed by two metallic shields (31, 40) between which is interposed a layer (42) of a waterblocking material. An outer one (40) of the shields is formed with overlapping longitudinal edge portions at least one of which is turned inwardly toward the core. A cavity (44) between those edge portions is provided with a waterblocking material which inhibits the longitudinal flow of water. The supporting portion includes a longitudinally extending strand material (60) capable of supporting a length of the cable which is supported by poles, for example, at ends of the length. A plastic jacket (45) encloses the supporting portion and the transmission portion.Type: GrantFiled: June 12, 1990Date of Patent: March 10, 1992Assignee: AT&T Bell LaboratoriesInventors: Paul W. Harbrecht, Frederick L. Henklein, David M. Mitchell, Cecil G. Montgomery, Francis J. Mullin, James J. Riordan
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Patent number: 5089329Abstract: This invention relates to an expandable tape for use in making cables. The expandable tape comprises a carrier material carrying thermally expanding microcapsules therein or thereon. The invention also relates to the use of the tape in the manufacture of cables, and to the cables incorporating such tape.Type: GrantFiled: December 9, 1987Date of Patent: February 18, 1992Assignee: Union Industrial Y. A.Inventors: Roelf R. A. de Vrieze, Petrus G. J. Vogel
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Patent number: 5077449Abstract: An electrical cable having a jacket surrounding a metal shield which, in turn, surrounds the cable core. The jacket comprises a polyolefin with a modifier provided by a carboxylic acid or anhydride thereof with the jacket lying in intimate overall contact with an outer surface of the shield and being bonded by the modifier throughout the overall contact areas to the shield.Type: GrantFiled: September 20, 1990Date of Patent: December 31, 1991Assignee: Northern Telecom LimitedInventors: Jacques Cornibert, Jorg-Hein Walling, Ranier A. Minzloff, Marek Kapuscinski, Serge Nadeau
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Patent number: 5068497Abstract: An electrostatic filter cable for an electrostatic filter system includes an internal electrical conductor formed of an electrically conductive plastic with a specific resistance in a range of substantially from 2 to 200 .OMEGA. mm.sup.2 /m. An insulation of cross-linked polyethylene is disposed on the internal electrical conductor. An outer conductive layer is disposed on the insulation. A copper shield is disposed on the outer conductive layer. An outer PVC jacket is disposed on the copper shield.Type: GrantFiled: September 5, 1990Date of Patent: November 26, 1991Assignee: Abb Kabel und Draht GmbHInventor: Wolfgang Krieger
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Patent number: 5061823Abstract: A crush, kink, and torque resistant, flexible coaxial cable having a closely spaced, spiralled rigid metal wire layer between the outer conductor of the coaxial transmission line and the outer jacket of the cable. Small size light weight, good flexibility with minimum spring-back and excellent crush resistance are provided together with excellent kinking, and torque resistance. This eliminates the need for external ruggedization to protect the electrical properties of the cable.Type: GrantFiled: July 13, 1990Date of Patent: October 29, 1991Assignee: W. L. Gore & Associates, Inc.Inventor: Charles E. Carroll
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Patent number: 5057651Abstract: Lightweight electroconductive wire which includes a strip of lithium metal with copper connectors at each end, and encapsulated within a layer of moisture proof aluminum foil, which has an anhydrous glue coating with an outer encapsulating layer of insulating plastic tape that has a coating of adhesive retaining it on the foil. The copper contacts extend outside the layer of tape and are plated with metal that is non reactive with lithium at contact with the lithium.Type: GrantFiled: March 26, 1990Date of Patent: October 15, 1991Inventors: Henry F. Hope, Stephen F. Hope
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Patent number: 5042904Abstract: A method and apparatus for providing a talk path in a longitudinal cavity of an enhanced crush, impact, and cut-through resistant communications cable. The talk path is especially suited for a fiber optic communications cable. The cable jacket is formed of a deformable material having a plurality of longitudinal cavities spaced about the cable core. A longitudinal cavity may contain a copper pair or optical fiber to serve as a talk path during servicing of the cable. The talk path may be readily accessed by a service technician without exposing the inner core or the communications cable.Type: GrantFiled: July 18, 1990Date of Patent: August 27, 1991Assignee: Comm/Scope, Inc.Inventors: Christopher A. Story, Paul A. Wilson
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Patent number: 5043539Abstract: A bonded sheath cable (20) includes a core (22) and a longitudinally wrapped outer shield (36) which encloses the core. An outer surface of the shield is provided with a layer (39) of a copolymer adhesive material which causes the shield to bond to an outerlying plastic jacket (41). The shield is wrapped longitudinally about the core to have overlapping portions (51,53) which form a longitudinal seam (38). In order to avoid seam splitting of the jacket along a line aligned with the longitudinal edge (55) of the outer overlapping portion, control means (60) comprising a polymeric material is provided to extend in bicircumferential directions from the longitudinal edge thereby reducing the bond along the overlap seam and allowing the cable to bend and/or twist without causing a stress concentration in the plastic overlying the longitudinal edge.Type: GrantFiled: March 28, 1990Date of Patent: August 27, 1991Assignee: AT&T Bell LaboratoriesInventors: Kent B. Connole, Richard S. Cuprak, Jr., Karen D. Dye, Michael K. McKee, David M. Mitchell, Gabriel P. Pellicciotti, Albert S. Tingley
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Patent number: 5043538Abstract: A water impervious cable construction for aerial, underground, or underwater use which includes at least one central electrical conductor, an overlayer of insulation material such as a plastic, a shield layer formed of a plurality of individual conductors (or the equivalent) which may be spirally wrapped and which shield layer is embedded in a layer of semiconducting material (which may also be a plastic), a layer of overlapped moisture barrier metal foil material, and a further overlayer of insulating material. The cable is manufactured on a substantially conventional cable extrusion line in which the partially manufactured cable (insulated core or cores wrapped with the shield conductors) is introduced into an extruder and a layer of semiconducting material is extruded thereon, wrapped with metal foil tape (which may include an edge located sealant), and introduced into a subsequent extruder to form one or more outer coatings.Type: GrantFiled: July 3, 1989Date of Patent: August 27, 1991Assignee: Southwire CompanyInventors: Raburn L. Hughey, Jr., Jerry M. Hesterlee, Frank R. Thrash, Jr.
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Patent number: 5023395Abstract: A cable shielding tape is produced by laminating a single layer of an insulating material film which may be plastic to a conducting layer which may be of metallic foil with one edge of the conducting layer offset laterally with respect to said insulating layer, leaving a foil free edge portion of the insulating layer along one edge of the tape. This can be manufactured by laying the insulating layer tapes in a shingled formation, laminating a web of foil over the tapes and then separating the tapes each with a partial covering of the foil. The conducting layer and insulating layer are coterminous at the opposite edge and both are folded back with the conducting layer outermost.Type: GrantFiled: December 19, 1989Date of Patent: June 11, 1991Assignee: KT Technologies Inc.Inventor: Lawrence J. O'Connor
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Patent number: 5011880Abstract: Fire retardant and water blocking material for cables having an admixture, in parts by weight, of 100 parts of amorphous polypropylene, which is in a continuous phase throughout the composition, from 10 to 70 parts of hydrated inorganic oxide or hydroxide material, and an organic halogenated material and antimony trioxide, the aggregate of the organic halogenated material and antimony trioxide being from 5 to 30 parts.Type: GrantFiled: May 4, 1989Date of Patent: April 30, 1991Assignee: Northern Telecom LimitedInventors: Jacques Cornibert, Jorg-Hein Walling
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Patent number: 5001304Abstract: A cable which may be used in buildings in riser shafts includes a core (22) which includes at least one transmission medium which is enclosed in a non-halogenated plastic material. The core is enclosed with a jacket (29) which also is made of a non-halogenated plastic material. The non-halogenated material which encloses the transmission medium is a plastic material selected from the group consisting of a filled polyolefin, a polyphenylene oxide, a polyetherimide and a silicone-polyimide copolymer, and blend compositions of a polyetherimide and a silicone-polyimide copolymer. For the jacket, the plastic material comprises a filled polyolefin.Type: GrantFiled: July 25, 1989Date of Patent: March 19, 1991Assignee: AT&T Bell LaboratoriesInventors: Tommy G. Hardin, Behrooz A. Khorramian