Patents by Inventor Yoshikazu Hayakawa
Yoshikazu Hayakawa 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).
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Patent number: 9862336Abstract: 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: GrantFiled: February 24, 2015Date of Patent: January 9, 2018Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Hirotaka Eshima
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Publication number: 20170355883Abstract: A cable includes a plurality of electric wires, and a tape member spirally wound around an assembled article that is formed by twisting the plurality of electric wires. The thickness of the tape member is not less than 0.028 mm and not more than 0.090 mm, a width of the tape member is not less than 18 mm and not more than 35 mm, the tape member is spirally wound with an overlap of not less than ¼ and not more than ½ of the width thereof, and a tensile strength of the tape member is different between the longitudinal direction and the width direction and is smaller in the width direction than in the longitudinal direction.Type: ApplicationFiled: June 6, 2017Publication date: December 14, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Takahiro FUTATSUMORI
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Publication number: 20170287590Abstract: A composite cable includes a first twisted-pair wire formed by twisting a pair of first electric wires which each include a first center conductor and a first insulation, a second twisted-pair wire formed by twisting a pair of second electric wires which each include a second center conductor and a second insulation, a pair of third electric wires arranged between the first and second twisted-pair wires, the third electric wires each having a larger outer diameter than the first and second electric wires and including a third center conductor with a larger cross-sectional area than the first and second center conductors and a third insulation, and a tape member spirally wound around an assembled article formed by twisting the first and second twisted-pair wires and the pair of third electric wires together. The twisted-pair wires, the assembled article and the tape member are twisted or wound in a same direction.Type: ApplicationFiled: March 22, 2017Publication date: October 5, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Publication number: 20170263353Abstract: A composite cable includes a first twisted-pair wire formed by twisting a pair of first electric wires, a second twisted-pair wire formed by twisting a pair of second electric wires, a pair of third electric wires arranged between the first and second twisted-pair wires in a circumferential direction, each third electric wire having a larger outer diameter than the first and second electric wires, and a tape member spirally wound around an assembled article that is formed by twisting the first twisted-pair wire, the second twisted-pair wire and the pair of third electric wires together. The two twisted-pair wires have the same twist direction, the twist direction of the two twisted-pair wires is different from a twist direction of the assembled article, and the twist direction of the assembled article is different from a winding direction of the tape member.Type: ApplicationFiled: March 2, 2017Publication date: September 14, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Publication number: 20170264062Abstract: [Problem] Provided are a composite cable and a composite harness that allow the improvement of cable termination workability while maintaining the flex resistance. [Solution] A composite cable 1 is provided with a pair of first electric wires 2, a twisted pair wire 4 formed by twisting a pair of second electric wires 3 having a smaller outer diameter than the first electric wires 2 and a tape member 6 spirally wound around an assembled article 5 that is formed by twisting the pair of first electric wires 2 and the twisted pair wire 4 together, wherein a twist direction of the twisted pair wire 4 is different from a twist direction of the assembled article 5, and the twist direction of the assembled article 5 is different from a winding direction of the tape member 6.Type: ApplicationFiled: September 14, 2015Publication date: September 14, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hiroyuki ITO, Naoya TOYOSHIMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Publication number: 20170264063Abstract: [Problem] Provided are a composite cable and a composite harness that allow the improvement of cable termination workability while maintaining the flex resistance. [Solution] A composite cable 1 is provided with a pair of first electric wires 2, a twisted pair wire 4 formed by twisting a pair of second electric wires 3 having a smaller outer diameter than the first electric wires 2 and a tape member 6 spirally wound around an assembled article 5 that is formed by twisting the pair of first electric wires 2 and the twisted pair wire 4 together, wherein a twist direction of the twisted pair wire 4, a twist direction of the assembled article 5 and a winding direction of the tape member 6 are a same direction.Type: ApplicationFiled: September 14, 2015Publication date: September 14, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hiroyuki ITO, Naoya TOYOSHIMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Publication number: 20170253198Abstract: A cable includes a plurality of electric wires, a paper tape wound around the plurality of electric wires, and an outer covering that covers a periphery of the paper tape and comprises a urethane-based resin. An air resistance of the paper tape as measured by Gurley tester method is not less than 5.0 sec/100 cc.Type: ApplicationFiled: February 14, 2017Publication date: September 7, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Publication number: 20170236617Abstract: A cable includes a plurality of electric wires, a tape member wound around the plurality of electric wires, and a jacket that covers an outer periphery of the tape member and includes an urethane-based resin. The tape member includes a nonwoven fabric including one of a polyester, a polypropylene, an aramid fiber, a nylon, an acrylic fiber and a glass fiber. An air permeability of the nonwoven fabric is not less than 30 cc/cm2/sec.Type: ApplicationFiled: February 13, 2017Publication date: August 17, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Fumihito OKA, Hirotaka ESHIMA, Takahiro FUTATSUMORI
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Publication number: 20170229212Abstract: A composite harness includes a composite cable that includes a plurality of first electric wires, a multicore wire formed by covering a plurality of second electric wires having a smaller diameter than the plurality of first electric wires with one urethane-based resin inner sheath to be in contact with the first electric wires, and a jacket covering an outer periphery of the plurality of first electric wires and the multicore wire, and a molded resin provided at an end portion of the composite cable so as to cover an outer surface of the inner sheath at an end portion of the multicore wire. The outer surface of the inner sheath is irregularity-formed at least at a portion in contact with the plurality of first electric wires and a portion covered with the molded resin.Type: ApplicationFiled: January 17, 2017Publication date: August 10, 2017Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA
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Patent number: 9718365Abstract: A wire harness includes first to third electric wires; a braid shield that covers the first to third electric wires; a tube-shaped electromagnetic wave absorber having a through hole that allows the first to third electric wires to be inserted therethrough, the electromagnetic wave absorber absorbing electromagnetic waves emitted from the first to third electric wires; and a resin tape and fasteners that fix the positions of the electromagnetic wave absorber and the braid shield relative to each other. The electromagnetic wave absorber is movable in an axial direction of the first to third electric wires relative to the first to third electric wires as a result of extension and contraction of the braid shield in the axial direction.Type: GrantFiled: March 31, 2015Date of Patent: August 1, 2017Assignee: Hitachi Metals, Ltd.Inventors: Masaaki Imahori, Yoshikazu Hayakawa, Takahiro Futatsumori
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Patent number: 9622393Abstract: A wire harness includes first to third electric wires, a braid shield that covers the first to third electric wires, and a tube-shaped electromagnetic wave absorber having a through hole that allows the first to third electric wires to be inserted therethrough, the electromagnetic wave absorber absorbing electromagnetic waves emitted from the first to third electric wires. The braid shield covers an outer circumferential surface and two axial end surfaces of the electromagnetic wave absorber to restrict movement of the electromagnetic wave absorber in an axial direction. The braid shield satisfies 1?n?15 and 10?m?50 where the number of carriers of the braid shield is denoted by n and the number of ends of the braid shield is denoted by m.Type: GrantFiled: March 31, 2015Date of Patent: April 11, 2017Assignee: HITACHI METALS, LTD.Inventors: Masaaki Imahori, Yoshikazu Hayakawa, Takahiro Futatsumori
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Patent number: 9545888Abstract: A vehicle composite cable includes a pair of power wires for supplying a current to an electric parking brake unit that generates a braking force after stopping a vehicle, a first signal line including a twisted pair wire transmitting a first electrical signal during when the vehicle is in motion, a second signal line including a twisted pair wire for transmitting a second electrical signal also during when the vehicle is in motion, and a sheath collectively covering the pair of power wires and the first and second signal lines. The first and second signal lines are not covered with a shield conductor, and the first signal line is separated from the second signal line by the pair of power wires.Type: GrantFiled: December 16, 2015Date of Patent: January 17, 2017Assignee: Hitachi Metals, Ltd.Inventors: Hiroyuki Ito, Naoya Toyoshima, Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Shinya Hayashi, Minoru Oikawa, Takahiro Futatsumori, Hiroshi Sakaguchi
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Patent number: 9511726Abstract: A composite cable for a vehicle is configured to connect between a wheel-side device which is fixed on a wheel side via a suspension device with respect to a body of the vehicle and a body-side device disposed on a body side. The composite cable includes wires, each of which includes a center conductor and an insulation for coating the center conductor. The center conductor includes a stranded wire comprising a plurality of solid conductors stranded with each other, and a diameter of each solid conductor is 0.05 mm to 0.12 mm. The composite cable also includes a sheath collectively covering the wires; and a lubricating member interposed between the wires and the sheath for reducing a frictional resistance between the wires and the sheath.Type: GrantFiled: November 13, 2015Date of Patent: December 6, 2016Assignee: Hitachi Metals, Ltd.Inventor: Yoshikazu Hayakawa
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Publication number: 20160339854Abstract: A composite cable includes an electric cable including 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 including 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 Anti-Lock Brake System (ABS) sensor for measuring a rotation speed of the wheels during running of the vehicle, and a common outer sheath formed by extrusion molding and collectively covering the electric cable and the sensor cable. The two unshielded signal wires contact each other. An outer diameter of each of the power wires is different from an outer diameter of each of the two unshielded signal wires.Type: ApplicationFiled: August 5, 2016Publication date: November 24, 2016Inventors: Yoshikazu HAYAKAWA, Hirotaka ESHIMA
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Patent number: 9502871Abstract: 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: GrantFiled: September 26, 2014Date of Patent: November 22, 2016Assignee: HITACHI METALS, LTD.Inventors: Hirotaka Eshima, Fumihito Oka, Nobuyuki Yamashita, Yoshikazu Hayakawa, Tomonori Shibata
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Patent number: 9463756Abstract: 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: GrantFiled: February 24, 2015Date of Patent: October 11, 2016Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Hirotaka Eshima
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Publication number: 20160176369Abstract: A vehicle composite cable includes a pair of power wires for supplying a current to an electric parking brake unit that generates a braking force after stopping a vehicle, a first signal line including a twisted pair wire transmitting a first electrical signal during when the vehicle is in motion, a second signal line including a twisted pair wire for transmitting a second electrical signal also during when the vehicle is in motion, and a sheath collectively covering the pair of power wires and the first and second signal lines. The first and second signal lines are not covered with a shield conductor, and the first signal line is separated from the second signal line by the pair of power wires.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventors: Hiroyuki ITO, Naoya TOYOSHIMA, Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Shinya HAYASHI, Minoru OIKAWA, Takahiro FUTATSUMORI, Hiroshi SAKAGUCHI
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Publication number: 20160068119Abstract: A composite cable for a vehicle is configured to connect between a wheel-side device which is fixed on a wheel side via a suspension device with respect to a body of the vehicle and a body-side device disposed on a body side. The composite cable includes wires, each of which includes a center conductor and an insulation for coating the center conductor. The center conductor includes a stranded wire comprising a plurality of solid conductors stranded with each other, and a diameter of each solid conductor is 0.05 mm to 0.12 mm. The composite cable also includes a sheath collectively covering the wires; and a lubricating member interposed between the wires and the sheath for reducing a frictional resistance between the wires and the sheath.Type: ApplicationFiled: November 13, 2015Publication date: March 10, 2016Inventor: Yoshikazu HAYAKAWA
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Patent number: 9221407Abstract: A composite cable for a vehicle is configured to connect between a wheel-side device which is fixed on a wheel side via a suspension device with respect to a body of the vehicle and a body-side device disposed on a body side. The composite cable includes wires, each of which includes a center conductor and an insulation for coating the center conductor. The center conductor includes a stranded wire comprising a plurality of solid conductors stranded with each other, and a diameter of each solid conductor is 0.05 mm to 0.12 mm. The composite cable also includes a sheath collectively covering the wires; and a lubricating member interposed between the wires and the sheath for reducing a frictional resistance between the wires and the sheath.Type: GrantFiled: December 27, 2013Date of Patent: December 29, 2015Assignee: Hitachi Metals, Ltd.Inventor: Yoshikazu Hayakawa
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Publication number: 20150289423Abstract: A wire harness includes first to third electric wires; a braid shield that covers the first to third electric wires; a tube-shaped electromagnetic wave absorber having a through hole that allows the first to third electric wires to be inserted therethrough, the electromagnetic wave absorber absorbing electromagnetic waves emitted from the first to third electric wires; and a resin tape and fasteners that fix the positions of the electromagnetic wave absorber and the braid shield relative to each other. The electromagnetic wave absorber is movable in an axial direction of the first to third electric wires relative to the first to third electric wires as a result of extension and contraction of the braid shield in the axial direction.Type: ApplicationFiled: March 31, 2015Publication date: October 8, 2015Inventors: Masaaki IMAHORI, Yoshikazu Hayakawa, Takahiro Futatsumori