Patents by Inventor Hiroyuki Okawa

Hiroyuki Okawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210296065
    Abstract: In a switch device, a switch part is turned ON/OFF by operation of an operating knob housed in a recessed part of a panel so that a movable terminal and a fixed terminal are in contact or are separated. An outside face, opposing an inner peripheral face of the recessed part of the panel, of the operating knob is an inclined face that is inclined inward of the operating knob in going downward. A gap that widens in going downward is formed between the outside face of the operating knob and the inner peripheral face of the recessed part of the panel. Accordingly, the device can ensure stable operation of the operating knob by discharging, from the gap between the panel and the operating knob, liquid that has entered the gap, and that can improve the appearance.
    Type: Application
    Filed: February 11, 2021
    Publication date: September 23, 2021
    Inventors: Yoshinobu SHIMAZU, Yuki KUNO, Taiji OKAWA, Kouji YAMAZAKI, Hiroyuki ABE, Mitsuhiro KONDO
  • Publication number: 20210296068
    Abstract: A switch device includes a panel housing a knob, the panel having a wall face around the knob. In at least one of outside faces of the knob, the outside faces opposing the wall face and another member adjacent to the knob, the outside face has a base part formed on an upper side thereof and a recess part formed in a lower side thereof. The recess part extends to a lower end of the outside face. The base part has an obliquely downwardly inclined parts formed on a lower edge part thereof. Accordingly, the device can ensure stable operation of the knob by discharging, from a gap between the panel and the knob, liquid that has entered the gap.
    Type: Application
    Filed: February 11, 2021
    Publication date: September 23, 2021
    Inventors: Yoshinobu SHIMAZU, Yuki KUNO, Taiji OKAWA, Kouji YAMAZAKI, Hiroyuki ABE, Mitsuhiro KONDO
  • Patent number: 11114215
    Abstract: An object of the present disclosure is to provide a core electric wire for a multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for a multi-core cable according to an aspect of the present disclosure comprises a conductor obtained by twisting element wires, and an insulating layer covering the conductor, wherein a linear expansion coefficient C of the insulating layer at from 25° C. to ?35° C. is no less than 1×10?5 K?1 and no greater than 2.5×10?4 K?1.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 7, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 11107603
    Abstract: A multi-core flat cable for a vehicle includes a sheath covering two power wires and at least two signal wires. A pair of the signal wires is twisted and is configured as one twisted pair of signal wires. On a section perpendicular to a longitudinal direction, a ratio (long-axis dimension/short-axis dimension) of a long-axis dimension to a short-axis dimension is equal to or greater than 1.8.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 31, 2021
    Assignee: Sumitomo Electric Industries, LTD.
    Inventors: Takaya Kohori, Hiroyuki Okawa
  • Publication number: 20210110949
    Abstract: An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm2 or more and 3.0 mm2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 15, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya KOHORI, Hiroyuki OKAWA
  • Patent number: 10964452
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: March 30, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10920051
    Abstract: The present invention is a resin composition including: a resin component; zinc oxide; and an acetic acid remover, wherein the resin component includes an ethylene-vinylacetate copolymer and a content of the ethylene-vinylacetate copolymer in the resin component is greater than or equal to 10% by mass, wherein the acetic acid remover is an acid acceptor, a nitrogen-containing aromatic heterocyclic compound having a mercapto group, or a combination thereof, and wherein a mass ratio of the zinc oxide to the ethylene-vinylacetate copolymer is greater than or equal to 0.06 and less than or equal to 0.20.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: February 16, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Taro Fujita, Shinya Nishikawa, Takaya Kohori, Motoi Matsuda, Hiroyuki Okawa
  • Publication number: 20210002799
    Abstract: A circular knitted tubular structure manufactured at low cost with use of a circular knitting machine is highly adaptable to bending due to flexibility, having tube inner and outer surfaces so soft that no abnormal noise is produced, and hence useful as a sleeve covering and thereby protecting a cable, such as an electrical wire and an optical fiber cable. The circular knitted tubular structure is formed of a fabric tape formed of circular knitted fabric having front yarn forming loops and back yarn having a higher heat shrinkage ratio than the front yarn and formed into a scrolled shape by letting the back yarn undergo heat shrinkage to have an overlap portion circumferentially overlapping 1.3 to 2.5 times. Apparatus for manufacturing the circular knitted tubular structure includes a furnace and a shape-forming jig.
    Type: Application
    Filed: March 17, 2017
    Publication date: January 7, 2021
    Inventors: Hiroyuki OKAWA, Kazushi SUEKI, Hideki KAWABATA
  • Patent number: 10872711
    Abstract: An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm2 or more and 3.0 mm2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 22, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya Kohori, Hiroyuki Okawa
  • Publication number: 20200277475
    Abstract: The present invention is a resin composition including: a resin component; zinc oxide; and an acetic acid remover, wherein the resin component includes an ethylene-vinylacetate copolymer and a content of the ethylene-vinylacetate copolymer in the resin component is greater than or equal to 10% by mass, wherein the acetic acid remover is an acid acceptor, a nitrogen-containing aromatic heterocyclic compound having a mercapto group, or a combination thereof, and wherein a mass ratio of the zinc oxide to the ethylene-vinylacetate copolymer is greater than or equal to 0.06 and less than or equal to 0.20.
    Type: Application
    Filed: December 22, 2017
    Publication date: September 3, 2020
    Inventors: Shigeyuki TANAKA, Taro FUJITA, Shinya NISHIKAWA, Takaya KOHORI, Motoi MATSUDA, Hiroyuki OKAWA
  • Publication number: 20200273606
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 27, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Shinya NISHIKAWA, Hiroyuki OKAWA, Takaya KOHORI, Yuhei MAYAMA, Takayuki HIRAI
  • Publication number: 20200258659
    Abstract: An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm2 or more and 3.0 mm2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.
    Type: Application
    Filed: April 27, 2018
    Publication date: August 13, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya KOHORI, Hiroyuki OKAWA
  • Patent number: 10703889
    Abstract: An insulated electric wire includes a conductor and an insulating layer covering an outer periphery of the conductor. The insulating layer is formed of a crosslinked polymer of an insulating resin composition that contains a resin component containing a first copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of less than 0.88 g/cm3, a second copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of 0.88 g/cm3 or more and less than 0.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: July 7, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Nayu Yanagawa, Shigeyuki Tanaka, Taro Fujita, Shinya Nishikawa, Takumi Ooshima, Hiroyuki Okawa
  • Patent number: 10699825
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 30, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Patent number: 10699824
    Abstract: Provided are a core electric wire for multi-core cable that is superior in flex resistance at low temperature, and a multi-core cable employing the same. A core electric wire for multi-core cable according to an aspect of the present invention comprises a conductor obtained by twisting element wires, and an insulating layer that covers an outer periphery of the conductor, in which, in a transverse cross section of the conductor, a percentage of an area occupied by void regions among the element wires is from 5% to 20%. An average area of the conductor in the transverse cross section is preferably from 1.0 mm2 to 3.0 mm2. An average diameter of the element wires in the conductor is preferably from 40 ?m to 100 ?m, and the number of the element wires is preferably from 196 to 2,450. The conductor is preferably obtained by twisting stranded element wires obtained by twisting subsets of element wires.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 30, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Hiroyuki Okawa, Takaya Kohori, Yuhei Mayama, Takayuki Hirai
  • Publication number: 20200168359
    Abstract: A multi-core flat cable for vehicle includes a sheath covering two power wires and at least two signal wires, a pair of the signal wires is twisted and is configured as one twisted pair of signal wires, and on a section perpendicular to a longitudinal direction, a ratio (long-axis dimension/short-axis dimension) of a long-axis dimension to a short-axis dimension is equal to or greater than 1.8.
    Type: Application
    Filed: June 2, 2017
    Publication date: May 28, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya KOHORI, Hiroyuki OKAWA
  • Patent number: 10661730
    Abstract: A multi-core cable for vehicle includes two power wires, two signal wires, two electric wires, and a sheath. The two power wires have the same size and are made of the same material. The two signal wires have the same size and are made of the same material, and a pair of the two signal wires is twisted and is configured a twisted pair of signal wires. The two electric wires have the same size and are made of the same material, and a pair of the electric wires is twisted and is configured as a twisted pair of electric wires. The two power wires, the twisted pair of signal wires and the twisted pair of electric wires are stranded.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: May 26, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya Kohori, Hiroyuki Okawa
  • Patent number: 10566107
    Abstract: A coated electric wire includes a resin insulating layer configured to cover a conductor, the insulating layer covers the conductor with a thickness of 0.3 mm to 0.4 mm, a cross-sectional area of the conductor is 1.5 mm2 to 3.0 mm2, the conductor is configured by stranding a plurality of stranded wires, each of the stranded wires is configured by stranding a plurality of wires, and a diameter of the wires constituting the stranded wire arranged at a center of the conductor is greater than a diameter of the wires constituting the other stranded wires.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: February 18, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya Kohori, Hiroyuki Okawa
  • Patent number: 10553332
    Abstract: A cable includes at least one core that has a conductor and an insulating coating layer that covers the conductor; and a sheath layer that covers the at least one core. The sheath layer includes an inner sheath layer and an outer sheath layer that covers the inner sheath layer. The inner sheath layer contains a silane-crosslinked very low density polyethylene. A main component of the outer sheath layer is polyurethane; a content of the very low density polyethylene per 100 parts by mass of a resin component in the inner sheath layer is 20 parts by mass or more and 100 parts by mass or less. A content of silicon atoms constituting silane crosslinks in the very low density polyethylene is 0.05 mass % or more and 1 mass % or less.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: February 4, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki Tanaka, Shinya Nishikawa, Yuhei Mayama, Hiroyuki Okawa
  • Patent number: 10538210
    Abstract: A multi-core cable for vehicle includes two power wires, two signal wires, two electric wires, and a sheath. The two power wires have the same size and are made of the same material. The two signal wires have the same size and are made of the same material, and a pair of the two signal wires is twisted and is configured a twisted pair of signal wires. The two electric wires have the same size and are made of the same material, and a pair of the electric wires is twisted and is configured as a twisted pair of electric wires. The two power wires, the twisted pair of signal wires and the twisted pair of electric wires are stranded.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: January 21, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takaya Kohori, Hiroyuki Okawa