Patents by Inventor Tomoyuki Murayama
Tomoyuki Murayama 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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Publication number: 20200168358Abstract: A cable is composed of a plurality of electric wires, a tape member provided over a periphery of the plurality of electric wires, and an outer sheath provided over an outer periphery of the tape member. The tape member includes a mixture of a first fiber having a melting point and a second fiber having a melting point lower than the melting point of the first fiber.Type: ApplicationFiled: November 18, 2019Publication date: May 28, 2020Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA
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Patent number: 10636543Abstract: Both deformation of a cross-sectional shape of the entire composite cable and deformation of a cross-sectional shape of an electric wire included in the composite cable are suppressed. The composite cable includes: a plurality of first electric wires; a shield electric wire in which a shield layer 33 is formed around a twist pair wire 32 obtained by intertwining a plurality of second electric wires; a sheath formed around an electric wire assembly obtained by intertwining the first electric wires and the shield electric wire; a first line filler filled between the twist pair wire and the shield layer; and a second line filler filled between the electric wire assembly and the sheath. The first electric wires and the shield electric wire are intertwined in a first direction, and the second electric wires are also intertwined in the first direction.Type: GrantFiled: July 2, 2019Date of Patent: April 28, 2020Assignee: Hitachi Metals, Ltd.Inventors: Hirotaka Eshima, Yoshikazu Hayakawa, Tomoyuki Murayama
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Patent number: 10636544Abstract: Both deformation of a cross-sectional shape of the entire composite cable and deformation of a cross-sectional shape of an electric wire included in the composite cable are suppressed. The composite cable includes: a plurality of first electric wires; a shield electric wire in which a shield layer 33 is formed around a twist pair wire 32 obtained by intertwining a plurality of second electric wires; a sheath formed around an electric wire assembly obtained by intertwining the first electric wires and the shield electric wire; a first line filler filled between the twist pair wire and the shield layer; and a second line filler filled between the electric wire assembly and the sheath. While the first electric wires and the shield electric wire are intertwined in a first direction, the second electric wires are intertwined in a second direction that is opposite to the first direction.Type: GrantFiled: July 3, 2019Date of Patent: April 28, 2020Assignee: Hitachi Metals, Ltd.Inventors: Hirotaka Eshima, Yoshikazu Hayakawa, Tomoyuki Murayama
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Patent number: 10569724Abstract: A composite cable is composed of a twisted pair formed by twisting together one pair of first electric wires each including a first conductor and a first insulation covering an outer circumference of the first conductor, one pair of second electric wires each including a second conductor greater in cross sectional area than the first conductor and a second insulation covering an outer circumference of that second conductor, the second electric wire being greater in outer diameter than the first electric wire, and a sheath covering aggregates together formed by stranding together the twisted pair and the one pair of second electric wires. The first conductors are formed by stranding a plurality of metal wires together. The second conductors are formed by stranding a plurality of aggregated strands together formed by stranding a plurality of metal wires together.Type: GrantFiled: January 30, 2019Date of Patent: February 25, 2020Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hiroyuki Ito, Hirotaka Eshima, Takahiro Futatsumori
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Patent number: 10547150Abstract: [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: GrantFiled: January 23, 2019Date of Patent: January 28, 2020Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hiroyuki Ito, Naoya Toyoshima, Hirotaka Eshima, Fumihito Oka, Takahiro Futatsumori
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Publication number: 20200013524Abstract: Both deformation of a cross-sectional shape of the entire composite cable and deformation of a cross-sectional shape of an electric wire included in the composite cable are suppressed. The composite cable includes: a plurality of first electric wires; a shield electric wire in which a shield layer 33 is formed around a twist pair wire 32 obtained by intertwining a plurality of second electric wires; a sheath formed around an electric wire assembly obtained by intertwining the first electric wires and the shield electric wire; a first line filler filled between the twist pair wire and the shield layer; and a second line filler filled between the electric wire assembly and the sheath. While the first electric wires and the shield electric wire are intertwined in a first direction, the second electric wires are intertwined in a second direction that is opposite to the first direction.Type: ApplicationFiled: July 3, 2019Publication date: January 9, 2020Inventors: Hirotaka ESHIMA, Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA
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Publication number: 20200013523Abstract: Both deformation of a cross-sectional shape of the entire composite cable and deformation of a cross-sectional shape of an electric wire included in the composite cable are suppressed. The composite cable includes: a plurality of first electric wires; a shield electric wire in which a shield layer 33 is formed around a twist pair wire 32 obtained by intertwining a plurality of second electric wires; a sheath formed around an electric wire assembly obtained by intertwining the first electric wires and the shield electric wire; a first line filler filled between the twist pair wire and the shield layer; and a second line filler filled between the electric wire assembly and the sheath. The first electric wires and the shield electric wire are intertwined in a first direction, and the second electric wires are also intertwined in the first direction.Type: ApplicationFiled: July 2, 2019Publication date: January 9, 2020Inventors: Hirotaka ESHIMA, Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA
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Publication number: 20190385764Abstract: A cable is provided which includes plural electric wires, a tape member wound around an assembled article that is formed by bundling the electric wires, and a sheath covering the tape member. The tape member includes plural entangled fibers. Plural holes are formed on the tape member so as to penetrate the tape member. A wire harness is also provided which includes the cable and a connector attached to an end portion of one of the electric wires.Type: ApplicationFiled: June 17, 2019Publication date: December 19, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA
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Patent number: 10457228Abstract: 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: GrantFiled: April 8, 2019Date of Patent: October 29, 2019Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Takahiro Futatsumori
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Patent number: 10410762Abstract: A cable includes an assembled article formed by twisting a plurality of electric wires, a tape member spirally wound around the assembled article, and a sheath covering around the tape member. The sheath includes an injection molded body including an urethane resin. The tape member includes a non-woven fabric tape including a polyester, a polypropylene, an aramid fiber, a nylon, an acryl fiber, or a glass fiber and an air permeability defined by the Frazier method of not less than 30 cm3/cm2·sec. A twist direction of the assembled article is opposite to a winding direction of the non-woven fabric tape.Type: GrantFiled: December 1, 2017Date of Patent: September 10, 2019Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Fumihito Oka, Takahiro Futatsumori
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Publication number: 20190248308Abstract: A composite cable is composed of a twisted pair formed by twisting together one pair of first electric wires each including a first conductor and a first insulation covering an outer circumference of the first conductor, one pair of second electric wires each including a second conductor greater in cross sectional area than the first conductor and a second insulation covering an outer circumference of that second conductor, the second electric wire being greater in outer diameter than the first electric wire, and a sheath covering aggregates together formed by stranding together the twisted pair and the one pair of second electric wires. The first conductors are formed by stranding a plurality of metal wires together. The second conductors are formed by stranding a plurality of aggregated strands together formed by stranding a plurality of metal wires together.Type: ApplicationFiled: January 30, 2019Publication date: August 15, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hiroyuki ITO, Hirotaka ESHIMA, Takahiro FUTATSUMORI
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Publication number: 20190232893Abstract: 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: April 8, 2019Publication date: August 1, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Takahiro FUTATSUMORI
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Publication number: 20190198194Abstract: 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: February 28, 2019Publication date: June 27, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA
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Patent number: 10315590Abstract: 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: GrantFiled: June 6, 2017Date of Patent: June 11, 2019Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Takahiro Futatsumori
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Publication number: 20190157824Abstract: [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: January 23, 2019Publication date: May 23, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hiroyuki ITO, Naoya TOYOSHIMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Patent number: 10297367Abstract: 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: GrantFiled: September 17, 2018Date of Patent: May 21, 2019Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Fumihito Oka, Takahiro Futatsumori
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Patent number: 10283235Abstract: 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: GrantFiled: January 17, 2017Date of Patent: May 7, 2019Assignee: HITACHI METALS, LTD.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima
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Patent number: 10224683Abstract: [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: GrantFiled: February 26, 2018Date of Patent: March 5, 2019Assignee: Hitachi Metals, Ltd.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hiroyuki Ito, Naoya Toyoshima, Hirotaka Eshima, Fumihito Oka, Takahiro Futatsumori
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Publication number: 20190019602Abstract: 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: September 17, 2018Publication date: January 17, 2019Inventors: Yoshikazu HAYAKAWA, Tomoyuki MURAYAMA, Hirotaka ESHIMA, Fumihito OKA, Takahiro FUTATSUMORI
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Patent number: 10163547Abstract: A composite cable includes: a plurality of first electric wires; a shield wire including a twisted wire in which a plurality of second electric wires are twisted together and a shield layer provided on an outer periphery of the twisted wire, each of the second electric wires having an outer diameter smaller than each of the first electric wires; a sheath provided on an outer periphery of an electric wire bundle in which the plurality of first electric wires and the shield wire are twisted together; a plurality of first linear fillers filled between the twisted wire and the shield layer; and a plurality of second linear fillers filled between the electric wire bundle and the sheath, wherein each of the first linear fillers and each of the second linear fillers are a same type of linear filler, and a fill ratio of the first linear fillers is greater than a fill ratio of the second linear fillers.Type: GrantFiled: March 22, 2018Date of Patent: December 25, 2018Assignee: Hitachi Metals, Ltd.Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Sachio Suzuki, Hiroyuki Ito, Takahiro Futatsumori, Noriyuki Takahashi