Patents by Inventor Hirotaka Eshima

Hirotaka Eshima 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).

  • Patent number: 9194761
    Abstract: A cable condition monitoring device for monitoring a damaged condition of a cable including a conductor part including a plurality of element wires and an insulating material part formed on a periphery of the conductor part includes a gas feeding device configured to feed a compressed gas into the conductor part, a pressure gauge configured to measure a pressure in the conductor part, and an insulating material part damage judgment part configured to judge whether the insulating material part is damaged or not based on the pressure measured by the pressure gauge.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 24, 2015
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hirotaka Eshima, Fumihito Oka
  • Patent number: 9112341
    Abstract: A cable fixing member is provided including a pair of bracket members that hold a cable therebetween and a fitting part that fits into the pair of bracket members. The fitting part includes a convex portion having an arc-shaped cross sectional face formed in one bracket member of the pair of bracket members; and a concave portion formed in the other bracket of the pair of bracket members and having an arc-shaped cross sectional face with which the convex portion is fitted, wherein the pair of bracket members are rotatably formed with the fitting part as a rotation center, so that facing surfaces of the pair of bracket members that hold the cable can be opened and closed.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: August 18, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Hirotaka Eshima, Yoji Kobayashi, Hideki Horikoshi, Haruhiko Sugai, Satoshi Murata
  • Publication number: 20150165988
    Abstract: A vehicle an electric parking brake mechanism including a power source, unshielded power wires connected to the power source and covered by an outer sheath, and a brake caliper configured to receive a power from the power source via the unshielded power wires, and an ABS mechanism including an ABS sensor detecting a rotation speed of a wheel, unshielded signal wires connected to the ABS sensor and covered by the outer sheath together with the unshielded power wires, and a control unit for conducting an ABS control based on a signal input from the ABS sensor via the unshielded signal wires.
    Type: Application
    Filed: February 24, 2015
    Publication date: June 18, 2015
    Inventors: Yoshikazu HAYAKAWA, Hirotaka ESHIMA
  • Publication number: 20150165987
    Abstract: A composite cable includes an electric cable consisting of two unshielded power wires, each of which includes a center conductor covered with an insulation, the electric cable being configured to be connected to an electric parking brake mechanism for preventing rotation of wheels after stopping a vehicle, a sensor cable consisting of two unshielded signal wires, each of which includes a center conductor covered with an insulation, the sensor cable being configured to be connected to an ABS sensor for measuring a rotation speed of the wheels during running of the vehicle, and a common outer sheath collectively covering the electric cable and the sensor cable. The two unshielded signal wires contact with each other.
    Type: Application
    Filed: February 24, 2015
    Publication date: June 18, 2015
    Inventors: Yoshikazu HAYAKAWA, Hirotaka ESHIMA
  • Patent number: 9040826
    Abstract: A cable having a cable structure comprising a stranded wire formed by stranding a plurality of stranded conductors and an inclusion that is more deformable than the stranded conductors, wherein a plurality of stranded conductors are arranged on a circumference of the inclusion.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: May 26, 2015
    Assignees: HITACHI METALS, LTD., Toyota Jidosha Kabushiki Kaisha
    Inventors: Fumihito Oka, Hirotaka Eshima, Takafumi Kai, Ryoji Mizutani, Kenji Ishida
  • Patent number: 9000301
    Abstract: A complex harness includes a composite cable including an electric brake cable, an ABS sensor cable and an outer sheath. The electric brake cable and the ABS sensor cable are integrated by being commonly covered with the outer sheath.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: April 7, 2015
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yoshikazu Hayakawa, Hirotaka Eshima
  • Publication number: 20150090474
    Abstract: An electric cable includes a wire section that includes an electric wire including a conductor and a braided shield layer covering an outer periphery of the conductor and including a plurality of metal wires braided, and a cylindrical outer layer section covering an outer periphery of the wire section and including a cylindrical sheath and a braided reinforcement layer that covers an inner surface of the sheath and includes a plurality of fibers braided. The wire section is arranged inside the cylindrical outer layer section. The outer layer section is constructed such that a permissible region is formed in the cylindrical outer layer section that allows a displacement of the wire section with respect to the outer layer section in a direction orthogonal to a length direction of the wire section.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Hirotaka ESHIMA, Fumihito OKA, Nobuyuki YAMASHITA, Yoshikazu HAYAKAWA, Tomonori SHIBATA
  • Publication number: 20150090489
    Abstract: A cable clamp is configured to fix an electric cable including an electric wire section and an outer layer section covering the electric wire section to a fixed member. The cable clamp includes a first cylindrical portion for the electric wire section to be inserted therein, and a second cylindrical portion formed around outside the first cylindrical portion to surround the first cylindrical portion. The second cylindrical portion includes a receiving portion formed between it and the first cylindrical portion to receive the outer layer section. The second cylindrical portion is swaged with the electric wire section inserted in the first cylindrical portion and with the outer layer section received in the receiving portion, so that the outer layer section is gripped by the first cylindrical portion and the second cylindrical portion.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 2, 2015
    Inventors: Hirotaka Eshima, Fumihito Oka, Nobuyuki Yamashita, Takahiro Futatsumori
  • Publication number: 20150083489
    Abstract: It is an objective of the invention to provide a high-power supply cable characterized in that even when mounted in a narrow space where the cable undergoes a repetitive bending motion, any undesirable deformation out of the bending plane is small. There is provided a power-supply cable including: an electric wire including an electrical conductor and a resin sheath covering the electrical conductor, the electric wire having a tendency to generate a curl under a no-load condition, the curl having a curling direction, the curling direction being a normal to the curl, the electric wire having one or more longitudinal ends; a connecting terminal disposed at one of the longitudinal ends of the electric wire; and a curling tendency direction indicator showing the curling direction, the indicator being disposed along a normal line to the curl of the electric wire.
    Type: Application
    Filed: August 19, 2014
    Publication date: March 26, 2015
    Inventors: Tomohisa SUZUKI, Takeshi TERASAKI, Fumihito OKA, Hirotaka ESHIMA, Naofumi CHIWATA
  • Publication number: 20150083482
    Abstract: An electric cable includes a conductor core including conductors each covered with an insulation layer, and a braided layer formed on an outer periphery of the conductor core. The braided layer includes a braid of a first line group and a second line group. The first line group includes first metal lines and first fiber lines arranged along a longitudinal direction of the conductor core and is spirally wound around the outer periphery of the conductor core. The second line group includes second metal lines and second fiber lines arranged along the longitudinal direction of the conductor core and is spirally wound around the outer periphery of the conductor core in a direction opposite to the first line group.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Applicant: HITACHI METALS, LTD.
    Inventors: Hirotaka ESHIMA, Fumihito OKA, Nobuyuki YAMASHITA, Takahiro FUTATSUMORI
  • Publication number: 20150075862
    Abstract: A harness includes an electric cable including an electric wire section and a protecting section to protect the electric wire section, a cable clamp including a cylindrical portion, and a ring shaped metallic fitting being larger in diameter than the cylindrical portion. The electric wire section is inserted inside the cylindrical portion. The protecting section is fitted around outside the cylindrical portion. The ring shaped metallic fitting is mounted around outside the fitted protecting section. The electric cable and the cable clamp are combined together by swaging of the mounted ring shaped metallic fitting.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 19, 2015
    Inventors: Fumihito OKA, Hirotaka Eshima, Nobuyuki Yamashita
  • Publication number: 20150057987
    Abstract: An estimation apparatus executes an estimation method of out-of-plane deformation of a cable having a winding curl, the method including an input step of inputting parameters needed for the estimation; a step of deriving a value of an equivalent material property of the cable; a step of making a finite element analysis model reproducing the winding curl; a step of deforming the cable model to be in a straight state and calculating a stress distribution; a step of setting a rotational angle for determining an installation direction of the winding curl; a step of setting the calculated stress distribution and the set rotational angle to be initial states, deforming the straight cable model according to a load condition input at the input step, and calculating a deformation state and an amount of the out-of-plane deformation; and a step of outputting calculation results to an output device.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 26, 2015
    Inventors: Tomohisa SUZUKI, Takeshi TERASAKI, Fumihito OKA, Hirotaka ESHIMA
  • Patent number: 8872033
    Abstract: A cable with less residual bend includes a sheath as an outermost layer; and a thread for correcting a residual bend. The thread is provided inside the sheath and disposed in parallel with a center axis of the cable along a longitudinal direction of the cable.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: October 28, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Fumihito Oka, Hirotaka Eshima, Yoji Kobayashi
  • Patent number: 8853532
    Abstract: A conducting path includes a plurality of cables, and a cable clamp for clamping the plurality of cables together. The cable clamp includes a single metal plate molded along a perimeter of the plurality of cables, an attachment flange formed by overlapping both ends of the metal plate, and a cable supporting member for supporting the plurality of cables between the cable supporting member and the metal plate. The cable supporting member includes a coolant passage formed therein for passing a coolant to cool the plurality of cables in a longitudinal direction of the plurality of cables.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: October 7, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hirotaka Eshima, Fumihito Oka
  • Patent number: 8800940
    Abstract: A cable clamp includes a single metal plate shaped along an outer periphery of three cables that are triangularly arranged when viewed in cross-section, a mounting flange portion formed with both end portions of the metal plate overlapped each other, and a cable support member inserted between at least two of the three cables so as to support the at least two cables between itself and the metal plate. The cable support member is inserted between two horizontally arranged cables in a direction perpendicular to the horizontal direction as well as perpendicular to a longitudinal direction of the two horizontally arranged cables. The cable support member has a tapered shape on an end side in an insertion direction thereof for facilitating an insertion thereof into a gap between the two horizontally arranged cables.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: August 12, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hirotaka Eshima, Yoji Kobayashi, Hideki Horikoshi
  • Patent number: 8710371
    Abstract: A bend resistant cable includes a stranded wire including a plurality of child stranded conductors each having a plurality of strands, the plurality of child stranded conductors being circumferentially disposed and stranded. A stranding direction of the plurality of strands of the child stranded conductors circumferentially adjacent to each other is different from each other.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: April 29, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Fumihito Oka, Hirotaka Eshima
  • Publication number: 20140109655
    Abstract: A cable condition monitoring device for monitoring a damaged condition of a cable including a conductor part including a plurality of element wires and an insulating material part formed on a periphery of the conductor part includes a gas feeding device configured to feed a compressed gas into the conductor part, a pressure gauge configured to measure a pressure in the conductor part, and an insulating material part damage judgment part configured to judge whether the insulating material part is damaged or not based on the pressure measured by the pressure gauge.
    Type: Application
    Filed: March 7, 2013
    Publication date: April 24, 2014
    Applicant: Hitachi Cable, Ltd.
    Inventors: Hirotaka Eshima, Fumihito Oka
  • Patent number: 8690614
    Abstract: A cable fixing method and a cable connecting part for a connector. In the cable fixing method and the cable connecting part, a part of a cable in a longitudinal direction is inserted into a metallic cylindrical part of a metallic case; and the cable is fixed to the metallic case by crimping the metallic cylindrical part which accommodates the part of the cable in the longitudinal direction in such a manner that 0.60?K?0.95 is established, when a cross-sectional area of the cable before crimping the metallic cylindrical part is A, a cross-sectional area of the cable after crimping the metallic cylindrical part is B, and B/A is a crimping ratio K.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: April 8, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventor: Hirotaka Eshima
  • Patent number: 8598459
    Abstract: A shielded cable includes a core comprising an insulated wire including an inner conductor and an insulation layer formed on an outer periphery of the inner conductor, a shield layer formed on an outer periphery of the core, and a jacket layer formed on an outer periphery of the shield layer. The shield layer includes a stranded conductor shield layer including a stranded conductor spirally wound around the core, and the stranded conductor includes a plurality of conductor strands stranded together. The shield layer may further include a tinsel copper braided shield layer or a metal plated strand braided shield layer that is formed between the core and the stranded conductor shield layer.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: December 3, 2013
    Assignee: Hitachi Cable, Ltd.
    Inventor: Hirotaka Eshima
  • Patent number: 8575489
    Abstract: A three-conductor cable includes three cables disposed in a triangular form in a cross sectional view thereof, and a first refrigerant path at a cable center portion surrounded by the three cables along a longitudinal direction of the three cables for flowing a refrigerant for cooling the three cables therethrough. The first refrigerant path is formed along a part of each of the three cables in a cross sectional view thereof.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: November 5, 2013
    Assignee: Hitachi Cable, Ltd.
    Inventors: Fumihito Oka, Hirotaka Eshima