Patents Assigned to SWCC SHOWA CABLE SYSTEM CO., LTD.
  • Publication number: 20220084745
    Abstract: A coil according to one embodiment of the present invention is a coil in which a first electric wire on an inner peripheral side and a second electric wire on an outer peripheral side are wound side by side to connect ends of the electric wires with each other, and the coil includes a first region where the first electric wire abuts on the second electric wire of another adjacent turn and separates from the second electric wire of a same turn.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 17, 2022
    Applicant: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Hideki MATSUMOTO, Kiyoshi MURA, Kentaro NOUCHI
  • Patent number: 11222745
    Abstract: A coil according to one embodiment of the present invention is a coil in which a first electric wire on an inner peripheral side and a second electric wire on an outer peripheral side are wound side by side to connect ends of the electric wires with each other, and the coil includes a first region where the first electric wire abuts on the second electric wire of another adjacent turn and separates from the second electric wire of a same turn.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: January 11, 2022
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Hideki Matsumoto, Kiyoshi Miura, Kentaro Nouchi
  • Publication number: 20200312546
    Abstract: A coil according to one embodiment of the present invention is a coil in which a first electric wire on an inner peripheral side and a second electric wire on an outer peripheral side are wound side by side to connect ends of the electric wires with each other, and the coil includes a first region where the first electric wire abuts on the second electric wire of another adjacent turn and separates from the second electric wire of a same turn.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 1, 2020
    Applicant: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Hideki MATSUMOTO, Kiyoshi MIURA, Kentaro NOUCHI
  • Patent number: 10394171
    Abstract: A method of manufacturing a heat-fixing rubber roller includes: forming a rubber layer of a silicone rubber composition on an outer periphery of a metal core shaft, the composition containing water-soluble sugar powder and methylene glycol; vulcanizing the rubber layer; and eluting the sugar powder and the triethylene glycol from the vulcanized rubber layer to form a foam rubber layer.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 27, 2019
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Kazuhisa Ishikawa, Shiro Katsuki, Narutoshi Kusaka, Shinji Yamazaki, Yoshimi Matsuzawa
  • Patent number: 10283242
    Abstract: A polymer bushing includes: an inner conductor; a hard insulating tube; a shielding metal fitting; a polymer covering that includes a body part that covers an outer periphery of the insulating tube, and a plurality of umbrella-shaped sheds that are formed at an outer periphery of the body part; and an electric-field stress-control layer that is composed of a zinc oxide layer or a high-permittivity layer, and is disposed along an interface between the insulating tube and the polymer covering. A rear end part of the electric-field stress-control layer is connected to the shielding metal fitting. The body part includes a first body part that has a uniform thickness, and a second body part that is located in a region around a front end part of the electric-field stress-control layer and has a thickness greater than the thickness of the first body part.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: May 7, 2019
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Tsutomu Sumimoto, Akihisa Kuwaki, Kazuhisa Adachi
  • Patent number: 9954335
    Abstract: A terminal connecting method including: removing a insulation film by a predetermined length from one end of a litz wire; inserting to a pressure fixing part a terminal part of the litz wire; compressing a first portion of the pressure fixing part with a first compression force to cause plastic deformation of an entirety of the pressure fixing part, and to temporarily fix the terminal part of the litz wire to the pressure fixing part; compressing a second portion of the pressure fixing part with a second compression force greater than the first compression force to locally cause plastic deformation of the pressure fixing part and the litz wire, the second portion being a part of the first portion; and pouring molten solder from a front end side of the pressure fixing part to firmly fix the litz wire to the terminal metal fitting.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: April 24, 2018
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Shirou Hasegawa, Masahiro Mori, Kenji Kamiya, Masahiro Ichikawa, Kiyoshi Miura, Hiroto Nozaki
  • Patent number: 9842681
    Abstract: Disclosed is a litz wire coil that is configured by spirally winding a litz wire on one plane by a predetermined number of turns. The litz wire is configured by twisting together a plurality of enameled wires formed by baking an insulating film on a conducting body. Pressure shaping is performed such that the litz wire has a substantially rectangular shape in cross section, and the flatness ratio of the litz wire in cross section (long side/short side) is controlled at 1.10 to 1.60, preferably 1.20 to 1.40, more preferably 1.25 to 1.35.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: December 12, 2017
    Assignee: SWCC SHOWA CABLE SYSTEM CO., LTD.
    Inventors: Shirou Hasegawa, Masahiro Mori, Tatsuya Iijima, Kiyoshi Miura, Kenji Kamiya, Masahiro Ichikawa, Hiroto Nozaki
  • Patent number: 9824796
    Abstract: An oxide superconductor includes: a substrate made of a metal; an insulating intermediate layer provided on the substrate; an oxide superconducting layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconducting layer; and a plurality of dividing grooves which divide the metal stabilizing layer and the oxide superconducting layer along a longitudinal direction of the substrate, reach the inside of the intermediate layer through the oxide superconducting layer from the metal stabilizing layer, and do not reach the substrate. The metal stabilizing layer and the oxide superconducting layer are divided to form a plurality of filament conductors by the plurality of dividing grooves, and in each dividing groove of the plurality of dividing grooves, a width of a groove opening portion of the dividing groove is equal to or greater than a width of a groove bottom portion of the dividing groove.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: November 21, 2017
    Assignees: FUJIKURA LTD., SWCC SHOWA CABLE SYSTEMS CO., LTD., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takato Machi, Tomo Yoshida, Tatsunori Nakamura, Kota Katayama, Koichi Nakao, Keiichi Tanabe
  • Patent number: 9352653
    Abstract: A railcar includes: a power collector configured to collect electric power through overhead contact lines; a circuit breaking unit connected to the power collector and arranged on a roof of a car; and a plurality of electric power cables connected to the circuit breaking unit. The circuit breaking unit includes: a circuit breaker arranged above the roof and connected to a circuit connected to the power collector; and a branch joint which is integrally connected to a terminal portion of the circuit breaker and arranged under the circuit breaker and to which the plurality of electric power cables are connected.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: May 31, 2016
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Shin Imanishi, Nobuyuki Sema, Kenji Sekiguchi
  • Publication number: 20160125977
    Abstract: An oxide superconductor includes: a substrate made of a metal; an insulating intermediate layer provided on the substrate; an oxide superconducting layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconducting layer; and a plurality of dividing grooves which divide the metal stabilizing layer and the oxide superconducting layer along a longitudinal direction of the substrate, reach the inside of the intermediate layer through the oxide superconducting layer from the metal stabilizing layer, and do not reach the substrate. The metal stabilizing layer and the oxide superconducting layer are divided to form a plurality of filament conductors by the plurality of dividing grooves, and in each dividing groove of the plurality of dividing grooves, a width of a groove opening portion of the dividing groove is equal to or greater than a width of a groove bottom portion of the dividing groove.
    Type: Application
    Filed: May 28, 2014
    Publication date: May 5, 2016
    Applicants: International Superconductivity Technology Center, FUJIKURA LTD., SWCC SHOWA CABLE SYSTEMS CO., LTD., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takato MACHI, Tomo YOSHIDA, Tatsunori NAKAMURA, Kota KATAYAMA, Koichi NAKAO, Keiichi TANABE
  • Patent number: 9225075
    Abstract: The present invention is a high voltage device system mounted on a railcar and includes a plurality of high voltage devices to which high-voltage electric power from an overhead contact line is supplied, a plurality of high-voltage cables configured to connect the high voltage devices with each other, and a joint device to which the high-voltage cables are connected. The high-voltage cables respectively include cable connector portions at tip end portions thereof, and each of the cable connector portions includes a base tubular portion configured to cover the high-voltage cable and a fit tubular portion extending from the base tubular portion in a direction substantially perpendicular to a longitudinal direction of the high-voltage cable. The joint device includes joint connector portions, each of which is fitted to the fit tubular portion of the cable connector portion to be connected to the high-voltage cable.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: December 29, 2015
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Shin Imanishi, Nobuyuki Sema
  • Patent number: 9214261
    Abstract: A cable for a high-voltage electronic device having a small diameter and an excellent voltage resistance characteristic. The cable includes an inner semiconducting layer, a high-voltage insulator, an outer semiconducting layer, a shielding layer, and a sheath on an outer periphery of a cable core portion, wherein the high-voltage insulator is formed of an insulating composition containing 0.5 to 5 parts by mass of an inorganic filler with respect to 100 parts by mass of an olefin-based polymer, and the inorganic filler has an average dispersed-particle diameter of 1 ?m or less.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 15, 2015
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Mariko Saito, Masahiro Minowa, Junichi Nishioka, Nahoko Tanaka
  • Patent number: 9111661
    Abstract: A cable for high-voltage electronic devices including an inner semiconductive layer, a high-voltage insulator, an outer semiconductive layer, a shielding layer, and a sheath which are provided on an outer periphery of a cable core part in the order mentioned, wherein the high-voltage insulator is made of an insulating composition whose temperature dependence parameter DR found by the following expression is 1.0 or less: DR=log R23° C.?log R90° C. (where R23° C. is volume resistivity (?·cm) at 23° C. and R90° C. is volume resistivity (?·cm) at 90° C.). The cable for high-voltage electronic devices is small in diameter and has an excellent withstand voltage characteristic.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: August 18, 2015
    Assignee: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Mariko Saito, Masahiro Minowa, Masamitsu Yamaguchi, Kazuaki Noguti
  • Publication number: 20140216027
    Abstract: Provided is a heat storage device which can stably store heat by storing heat within a fixed temperature range. A heat storage device (10) of the present invention is characterized in being provided with a heat resistant frame (11), which is filled with one kind of alloy or mixed salt having a predetermined eutectic temperature, alternatively, a heat resistant frame (11), which is filled with two or more kinds of alloys or mixed salts having different eutectic temperatures, by having the alloys or the mixed salts adjacent to each other in the order of eutectic temperature levels with a partitioning wall (11a) therebetween.
    Type: Application
    Filed: March 30, 2012
    Publication date: August 7, 2014
    Applicants: Tokyo University of Science Educational Foundation Administration Organization, SWCC Showa Cable Systems Co., Ltd., Nippon Thermostat Co., Ltd., Itoh Kikoh Co., Ltd.
    Inventors: Tsutomu Iida, Kuniaki Mizuno, Yukio Takizawa, Tatsuya Deguchi, Kazunori Sawada, Yohike Mito, Takashi Nemoto, Masahiro Minowa
  • Patent number: 8787718
    Abstract: There is provided an optical fiber ribbon capable of realizing, in an optical cable, sure reliability, a reduction in size and weight, higher density, and a further improvement in workability, a method of manufacturing the same, and an optical cable using such an optical fiber ribbon. An optical fiber ribbon 10 includes four single-core coated optical fibers 11 arranged in parallel on a same plane; and coupling parts 12 arranged at intervals in a length direction and a width direction, each coupling only adjacent two of the single-core coated optical fibers 11, wherein an interval P of the coupling parts 12 coupling the same two single-core coated optical fibers is not less than 20 mm nor more than 90 mm and a length Q of each of the coupling parts 12 is not less than 1 mm nor more than 10 mm.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 22, 2014
    Assignee: SWCC Showa Cable Systems Co., Ltd.
    Inventors: Kengo Tanabe, Takao Kaneko
  • Publication number: 20140020999
    Abstract: A railcar includes: a power collector configured to collect electric power through overhead contact lines; a circuit breaking unit connected to the power collector and arranged on a roof of a car; and a plurality of electric power cables connected to the circuit breaking unit. The circuit breaking unit includes: a circuit breaker arranged above the roof and connected to a circuit connected to the power collector; and a branch joint which is integrally connected to a terminal portion of the circuit breaker and arranged under the circuit breaker and to which the plurality of electric power cables are connected.
    Type: Application
    Filed: January 14, 2011
    Publication date: January 23, 2014
    Applicants: SWCC SHOWA CABLE SYSTEMS CO., LTD., KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Shin Imanishi, Nobuyuki Sema, Kenji Sekiguchi
  • Publication number: 20140008169
    Abstract: The present invention is a high voltage device system mounted on a railcar and includes a plurality of high voltage devices to which high-voltage electric power from an overhead contact line is supplied, a plurality of high-voltage cables configured to connect the high voltage devices with each other, and a joint device to which the high-voltage cables are connected. The high-voltage cables respectively include cable connector portions at tip end portions thereof, and each of the cable connector portions includes a base tubular portion configured to cover the high-voltage cable and a fit tubular portion extending from the base tubular portion in a direction substantially perpendicular to a longitudinal direction of the high-voltage cable. The joint device includes joint connector portions, each of which is fitted to the fit tubular portion of the cable connector portion to be connected to the high-voltage cable.
    Type: Application
    Filed: November 15, 2011
    Publication date: January 9, 2014
    Applicants: SWCC SHOWA CABLE SYSTEMS CO., LTD., KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Shin Imanishi, Nobuyuki Sema
  • Patent number: 8476199
    Abstract: This invention provides a rare earth-type tape-shaped oxide superconductor having excellent mechanical strength and superconducting properties and a composite substrate using for the same. Non-oriented and non-magnetic Ni-9 at % W alloy tapes (11, 21) were bonded onto both sides of a non-oriented and non-magnetic hastelloy tape (100) by a normal temperature bonding process, and an Ni-3 at % W alloy tape (12) having a cubic texture was bonded onto the surface of the tape (11) by a normal temperature bonding process. Thereafter, the heat-treatment was given in a reducing atmosphere and a bonding layer (50a) etc. was formed on the adhesive interface of each layer. Next, a (Ce, Gd)O2 intermediate layer (13) and a Ce2Zr2O7 intermediate layer (14) by an MOD process, a CeO2 intermediate layer (15), a YBCO superconducting film (16) by a TFA-MOD method, and a silver stabilization layer (17) were stacked sequentially on the surface of the tape (12). A critical current value (Ic) of this superconductor showed 150 A.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: July 2, 2013
    Assignees: International Superconductivity Technology Center, The Juridicial Foundation, SWCC Showa Cable Systems Co., Ltd.
    Inventors: Yuji Aoki, Tsutomu Koizumi, Yasuo Takahashi, Atsushi Kaneko, Takayo Hasegawa, Hiroshi Nakamura
  • Patent number: 8431515
    Abstract: A tape-shaped oxide superconductor includes a 15 to 100 nm-thick Ce—Gd—O-based oxide layer (Ce:Gd=40:60 to 70:30 molar ratio) and a 100 nm-thick Ce—Zr—O-based oxide layer (Ce:Zr=50:50 molar ratio) as first and second intermediate layers are formed by MOD on an Ni-base alloy substrate having a half value width (FWHM:??) of 6.5 degrees. A 150 nm-thick CeO2 oxide layer as a third intermediate layer is formed on the second intermediate layer by RF sputtering. A 1 ?m-thick YBCO superconducting layer is formed by TFA-MOD on the three-layer structure. In the tape-shaped oxide superconductor, the ?? values of the first to third intermediate layers are (6.0 to 6.5) degrees, (6.0 to 6.6) degrees, and (6.0 to 6.6) degrees, respectively, and the Jc value of the YBCO superconducting layer in liquid nitrogen is 1.8 to 2.2 MA/cm2.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 30, 2013
    Assignees: International Superconductivity Technology Center, The Juridical Foundation, SWCC Showa Cable Systems Co., Ltd.
    Inventors: Yasuo Takahashi, Tsutomu Koizumi, Yuji Aoki, Atsushi Kaneko, Takayo Hasegawa
  • Publication number: 20130092416
    Abstract: A cable for high-voltage electronic devices including an inner semiconductive layer, a high-voltage insulator, an outer semiconductive layer, a shielding layer, and a sheath which are provided on an outer periphery of a cable core part in the order mentioned, wherein the high-voltage insulator is made of an insulating composition whose temperature dependence parameter DR found by the following expression is 1.0 or less: DR=log R23° C.?log R90° C. (where R23° C. is volume resistivity (?·cm) at 23° C. and R90° C. is volume resistivity (?·cm) at 90° C.). The cable for high-voltage electronic devices is small in diameter and has an excellent withstand voltage characteristic.
    Type: Application
    Filed: April 18, 2011
    Publication date: April 18, 2013
    Applicant: SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Mariko Saito, Masahiro Minowa, Masamitsu Yamaguchi, Kazuaki Noguti