USPTO Wire & Cable Industry Patents for September 2021

Low-Profile Cable Armor
United States Patent 11,101,056 Issued August 24, 2021
Inventors: Peter Lafreniere, Mattapoisett, MA, USA; Stephen Lundgren, Marion, MA, USA; Paulo Damoura, Dorchester, MA, USA; Ronald Pegg, New Bedford, MA, USA; Antonio Araujo, New Bedford, MA, USA; and David Campbell, Bristol, RI, USA Assignee: AFC Cable Systems. Inc., Bedford, MA, USA Disclosed is an armored cable assembly that may include conductors and a metal sheath disposed over the plurality of conductors. The metal sheath may have a plurality of revolutions extending helically along a lengthwise axis, each of the plurality of revolutions including a first section having a curved profile, a second section extending from the first section, the second section having a planar profile and a third section extending from the second section. The third section may include a free end angled towards an interior cavity of the metal sheath, the free end extending past a plane defined by a bottom most point of the first section of an adjacent revolution, the plane extending perpendicular to the second section.

Optical Cable Having a Buffer Tube with Flexible Ribbon
United States Patent 11,099,346 Issued August 24, 2021 Inventors: Ray Lance Marvin, Hickory, NC, USA; James David Holder, Hickory, NC, USA; and Michael Gray Doub, Claremont, NC, USA Assignee: Prysmian S.p.A., Milan, Italy An optical cable includes a plurality of buff er tubes, each of the buff er tubes includes a flexible ribbon, the flexible ribbon including a plurality of optical fibers, the flexible ribbon being wrapped with a finished tape.

Core Wire for Multi-Core Cables and Multi-Core Cable
United States Patent 11,101,054 Issued August 24, 2021
Inventors: Yutaka Matsumura, Osaka, Japan; Shigeyuki Tanaka, Osaka, Japan; Taro Fujita, Osaka, Japan; Takaya Kohori, Kanuma, Japan; and Masayuki Ishikawa, Kanuma, Japan Assignee: Sumitomo Electric Industries, Ltd., Osaka, Japan A core wire for multi-core cables includes a conductor obtained by twisting a plurality of elemental wires, and an insulating layer coated on an outer peripheral surface of the conductor. The insulating layer contains polyethylene-based resin as a main component, and the product of a linear expansion coefficient C1 of the insulating layer in the range of 25°C to -35°C and an elastic modulus E1 at -35°C, namely (C1xE1) is 0.01 MPaK-1 or more and 0.90 MPaK-1 or less. The melting point of the polyethylenebased resin is 80°C or higher and 130°C or lower.
Rolled Wire Rod United States Patent 11,098,394 Issued August 24, 2021 Inventors: Naoki Matsui, Tokyo, Japan; Yutaka Neishi, Tokyo, Japan; and Makoto Kosaka, Tokyo, Japan Assignee: Nippon Steel Corporation, Tokyo, Japan A rolled wire rod wherein the contents of Ti, N, and S (mass %) are respectively [Ti], [N], and [S], and, if [S]≤0.0010, [Ti] is (4.5x[S]+3.4x[N]) or more and (0.008+3.4x[N]) or less, while if [S]≥0.0010, [Ti] is (4.5x[S]+3.4x[N]) or more and (8.0x[S]+3.4x[N]) or less, the internal structure is a mixed structure of ferrite and pearlite with an area ratio of a ferrite fraction of 40% or more, and a mean area of sulfides present in a range from a surface of the wire rod to a depth position D/8 from the surface of the wire rod is 6 μm2 or less, wherein D represents a diameter in mm in a cross-section of the wire rod at a plane including the axis of the wire rod, and a mean aspect ratio of the sulfides is 5 or less.

Electric Wire Conductor, Covered Electric Wire, and Wiring Harness United States
Patent 11,094,430 Issued August 17, 2021 Inventors: Hayato Ooi, Yokkaichi, Japan; Yasuyuki Otsuka, Yokkaichi, Japan; Kinji Taguchi, Yokkaichi, Japan; Toyoki Furukawa, Yokkaichi, Japan; Tooru Tanji, Osaka, Japan; Kei Sakamoto, Osaka, Japan; and Tetsuay Kuwabara, Osaka, Japan Assignees: Autonetworks Technologies, Ltd., Mie, Japan; Sumitomo Wiring Systems, Ltd., Mie, Japan; and Sumitomo Electric Industries, Ltd., Osaka, Japan An electric wire conductor having both flexibility and a spacesaving property. Also provided are a covered electric wire and a wiring harness containing the electric wire conductor. An electric wire conductor contains a wire strand containing a plurality of elemental wires twisted together. The electric wire conductor has a flat portion in which a cross section intersecting an axial direction of the wire strand has a flat shape. Assuming a conductor cross-sectional area of the flat portion as s mm2 and a vacancy ratio defined as a ratio of vacancies not occupied by the elemental wires in a cross section of the flat portion as v %, the conductor cross-sectional area and the vacancy ratio satisfies v>0.29 s+2.0. The covered electric wire contains electric wire conductor and an insulator covering the conductor. The wiring harness contains the covered electric wire.

Twisted Pair Cable
United States Patent 11,087,903 Issued August 10, 2021 Inventors: Woo Kyoung Lee, Suwon-si, Korea; Jung Jin Kim, Gumi-si, Korea; Young Il Cho, Osan-si, Korea; and Dong Man Jeon, Suwon-si, Korea Assignee: LS Cable & System Ltd., Anyang-si, Korea The present invention discloses a twisted pair cable in which a shape of a separator for separating a The present invention discloses a twisted pair cable in which a shape of a separator for separating a plurality of pairs of wires apart from each other is changed and minimizes internal interference between the pairs of wires.
Cable and Manufacturing Method Thereof United States Patent 11,076,515 Issued July 27, 2021 Inventors: HuaBing Li, Shenzhen, China; and Yu Huang, Shenzhen, China Assignee: Luxshare Precision Industry Co., Ltd., Shenzhen, China A cable includes a wire and an electromagnetic shielding layer. The electromagnetic shielding layer covers the wire. The electromagnetic shielding layer is in the form of fiber mesh, including a conductive polymer. A manufacturing method includes: feeding the conductive polymer, melting the conductive polymer, extruding the molten conductive polymer to form a plurality of conductive polymer fibers, covering the wire with the plurality of conductive polymer fibers and curing the plurality of the conductive polymer fibers to form the electromagnetic shielding layer covering the wire. The electromagnetic shielding layer of the cable of the present application replaces current aluminum foil shielding and metal shielding for conventional wires, decreasing interference by electromagnetic waves produced by electromagnetic induction on electronic devices nearby.
Electrical Cable Assembly, Method and Apparatus for Making Same and Electrical Terminal for Same United States Patent 11,069,994 Issued July 20, 2021 Inventors: David R. Peterson, Aurora, OH, USA; Jared Bilas, North Bloomfield, OH, USA; Joseph Sudik, Jr., Niles, OH, USA; Jonathan D. Weidner, Conneautville, PA, USA; Sean P. Krompegel, Canfield, OH, USA; and Jesse Braun, Warren, OH, USA Assignee: Aptiv Technologies Limited, St. Michael, Barbados An electrical cable assembly is presented herein. The electrical cable assembly includes a multiconductor flat cable including a first and second electrically conductive wire arranged in a coplanar fashion with each other and encased within a planar dielectric structure. A slot is defined in the planar dielectric structure intermediate the first and second wires, thereby forming first wing features in the dielectric structure extending from the first wire and second wing features extending from the second wire. Exposed portions of the first and second wires extend beyond the first and second wing features. A method of forming the electrical cable assembly, an apparatus for forming the electrical cable assembly, and an electrical terminal configured for use in the electrical cable assembly is also presented. The wing features may include holes and the terminals may include prongs to be received in the holes.

Electrical Cable
United States Patent 11,069,458 Issued July 20, 2021 Inventors: Craig Warren Hornung, Harrisburg, PA, USA; and Chad William Morgan, Carneys Point, NJ, USA Assignee: TE Connectivity Services GmbH, Schaffhausen, Switzerland An electrical cable includes a conductor assembly having a first conductor, a second conductor and an insulator surrounding the first conductor and the second conductor. The insulator has an outer surface and extends along a longitudinal axis for a length of the electrical cable. The conductor assembly has a coating layer on the outer surface of the insulator being conductive defining an inner electrical shield of the electrical cable. A cable shield is wrapped around the conductor assembly and has an inner edge and an outer edge. The outer edge is wrapped over the inner edge to form a flap covering the inner edge and extending along the longitudinal axis. The cable shield engages the inner electrical shield and forms an outer electrical shield exterior of the inner electrical shield.

Insulated Wire Capable of Changing Color When Overheated Under Current Load and Method for Making the Same
United States Patent 11,062,823 Issued July 13, 2021 Inventor: Cheng-Lang Tsai, New Taipei, Taiwan An insulated wire capable of changing color when overheated under a current load includes an insulated core, at least one thermochromic strip and a transparent plastic protective layer. The thermochromic strip is wound and fixed on the peripheral surface of the insulated core. The transparent plastic protective layer clads the peripheral surface of the insulated core and/or the top surface of the thermochromic strip. When the insulated core is overloaded and generates heat, the heat is transmitted to, and thereby changes the color of, the thermochromic strip. The color change is visible through the transparent plastic protective layer and can therefore alert the wire user in real time that the load on the insulated wire should be lowered.

Electric Cable Reel
United States Patent 11,059,694 Issued July 13, 2021 Inventors: Nicolas Poulin, Auchy les Mines, France; and Olivier Pinto, Francheville, France Assignee: Nexans, Courbevoie, France The invention relates to an electrical cable reel. According to the invention, the reel comprises an arrangement (4) for remotely monitoring the amount of cable wound around the reel, said arrangement comprising a sensor (4A) and an electronic board connected to the sensor and linked to a remote application that is enabled.

Packaging Arrangement for Cable United States
Patent 11,059,661 Issued July 13, 2021 Inventors: Frank Harwath, Naperville, IL, USA; and James Cunneen, Villa Park, IL, USA Assignee: CommScope Technologies LLC, Hickory, NC, USA A package for storing and/or shipping cable includes: a platform having a flat panel having upper and lower surfaces, first locating features on the upper surface, and second locating features on the lower surface; a generally cylindrical hub having a first diameter mounted on the upper surface of the fl at panel, the hub engaging and being positioned by the first locating features; and a cable coiled around the hub.

Copper-Coated Magnesium Wire and Method for Manufacturing the Same
United States Patent 11,052,442 Issued July 6, 2021 Inventors: Hiroshi Kitazawa, Ueda, Japan; and Takuya Sakita, Ueda, Japan Assignee: Totoku Electric Co., Ltd., Tokyo, Japan To provide a copper-coated magnesium wire which meets the demand for a lightweight coil wire material, and a method for manufacturing the same. The above-described problem is solved by a copper-coated magnesium wire (10) comprising a core material (1) made of magnesium, and a copper coating layer (2) made of copper or a copper alloy provided on a surface of the core material (1). In the copper-coated magnesium wire (10), a wire drawing mark is present on a surface of the copper coating layer (2), and the diameter is preferably within a range of 0.03 to 0.08 mm, inclusive. Further, a thickness of the copper coating layer (2) is preferably within a range of 5% to 30%, inclusive, as a ratio of the overall cross-sectional area. An insulating coating layer (3) may be provided on an outer circumferential side of the copper coating layer (2).

Non-Halogen Flame-Retardant Insulated Electric Wire and Non-Halogen Flame-Retardant Cable
United States Patent 11,049,629 Issued June 29, 2021 Inventors: Makoto Iwasaki, Hitachi, Japan; Ryutaro Kikuchi, Mito, Japan; Mitsuru Hashimoto, Hitachi, Japan; Takuya Oriuchi, Takahagi, Japan Assignee: Hitachi Metals, Ltd., Tokyo, Japan A non-halogen flame-retardant insulated electric wire includes a conductor and a crosslinked singlelayer or a multilayer insulating layer on an outer periphery of the conductor. The insulating layer has a tensile elastic modulus of 500 MPa or more and an elongation at break of 120% or less in a tensile test performed at a displacement rate of 200 mm/min, and has a storage elastic modulus at 125°C of 3 x 106 Pa or more in a dynamic viscoelasticity test.

Electrical Cable Having Crosslinked Insulation with Internal Pulling Lubricant
United States Patent 11,046,851 Issued June 29, 2021 Inventors: Philip Sasse, Douglasville, GA, USA; and Tim Andrea, Douglasville, GA, USA Assignee: Southwire Company, LLC, Carrollton, GA, USA Electrical power cable having a reduced surface coefficient of friction and required installation pulling force, and the method of manufacture thereof, in which the central conductor core, with or without a separate insulating layer, is surrounded by a sheath of crosslinked polyethylene. A high viscosity, high molecular weight silicone based pulling lubricant or fatty acid amide pulling lubricant is incorporated by alternate methods with the polyethylene to form a composition from which the outer sheath is extruded, and is effective to reduce the required pulling force on the cable during installation. Functions of the United States Patent and Trademark Office (USPTO) The United States Patent and Trademark Office (USPTO or Office) is an agency of the U.S. Department of Commerce. The role of the USPTO is to grant patents for the protection of inventions and to register trademarks. It serves the interests of inventors and businesses with respect to their inventions and corporate products, and service identifications. It also advises and assists the President of the United States, the Secretary of Commerce, the bureaus and offices of the Department of Commerce and other agencies of the government in matters involving all domestic and global aspects of “intellectual property.” Through the preservation, classification and dissemination of patent information, the Office promotes the industrial and technological progress of the nation and strengthens the economy. In discharging its patent related duties, the USPTO examines applications and grants patents on inventions when applicants are entitled to them; it publishes and disseminates patent information, records assignments of patents, maintains search files of U.S. and foreign patents and maintains a search room for public use in examining issued patents and records.

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