Patents by Inventor Kazuhiro Miyagi

Kazuhiro Miyagi 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: 10804048
    Abstract: A switch for a rotating machine is provided with: a casing supporting two or more terminals respectively having contacts so as to hold the contacts exposed on an inside of the casing; a rod having a rod body fitting in the casing axially movably from a first position to a second position; a first spring axially biasing the rod returning back; a carrier housed in the casing and combined with the rod body to follow axial motion of the rod body; a conductor carried by the carrier and exposed on a side face of the carrier toward the terminals and depart from the terminals at the second position; a second spring intervening between the carrier and the conductor to bias the conductor toward the contacts; and a seal intervening between the rod and the casing and fluid-tightly isolating an interior of the casing.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: October 13, 2020
    Assignee: GKN Automotive Ltd.
    Inventors: Kazuhiro Miyagi, Hideyuki Inose
  • Publication number: 20190304715
    Abstract: A switch for a rotating machine is provided with: a casing supporting two or more terminals respectively having contacts so as to hold the contacts exposed on an inside of the casing; a rod having a rod body fitting in the casing axially movably from a first position to a second position; a first spring axially biasing the rod returning back; a carrier housed in the casing and combined with the rod body to follow axial motion of the rod body; a conductor carried by the carrier and exposed on a side face of the carrier toward the terminals and depart from the terminals at the second position; a second spring intervening between the carrier and the conductor to bias the conductor toward the contacts; and a seal intervening between the rod and the casing and fluid-tightly isolating an interior of the casing.
    Type: Application
    Filed: June 5, 2019
    Publication date: October 3, 2019
    Inventors: Kazuhiro Miyagi, Hideyuki Inose
  • Patent number: 10027194
    Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of the motor is configured by laminating single materials each formed from a hot-worked material or a cold-worked material preferably composed of an 18Mn-18Cr nonmagnetic steel.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 17, 2018
    Assignees: THE JAPAN STEEL WORKS, LTD., SANWAKOGYO Ltd.
    Inventors: Shinji Tanaka, Hirokazu Madarame, Toshifumi Nakajima, Kazuhiro Miyagi
  • Patent number: 9800104
    Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of a motor is configured by a nonmagnetic steel having a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: October 24, 2017
    Assignees: THE JAPAN STEEL WORKS, LTD., SANWAKOGYO Ltd.
    Inventors: Shinji Tanaka, Hirokazu Madarame, Toshifumi Nakajima, Kazuhiro Miyagi
  • Publication number: 20150326078
    Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of a motor is configured by a nonmagnetic steel having a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.
    Type: Application
    Filed: March 27, 2013
    Publication date: November 12, 2015
    Applicants: SANWAKOGYO Ltd., THE JAPAN STEEL WORKS, LTD.
    Inventors: Shinji TANAKA, Hirokazu MADARAME, Toshifumi NAKAJIMA, Kazuhiro MIYAGI
  • Publication number: 20150054360
    Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of the motor is configured by laminating single materials each formed from a hot-worked material or a cold-worked material preferably composed of an 18Mn-18Cr nonmagnetic steel.
    Type: Application
    Filed: March 27, 2013
    Publication date: February 26, 2015
    Applicants: SANWAKOGYO LTD., THE JAPAN STEEL WORKS, LTD.
    Inventors: Shinji Tanaka, Hirokazu Madarame, Toshifumi Nakajima, Kazuhiro Miyagi
  • Patent number: 7462884
    Abstract: A nitride semiconductor device having excellent ESD tolerance, by preventing uneven distribution of the electric current in the p-side nitride semiconductor layer. The p-side nitride semiconductor layer (40) comprises, from the active layer (30) side, (a) a p-side wide band gap layer (12) containing a p-type impurity and (b) a three-layer structure (15) comprising a first p-side nitride semiconductor layer (16), a second p-side nitride semiconductor layer (17), and a third p-side nitride semiconductor layer (18).
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: December 9, 2008
    Assignee: Nichia Corporation
    Inventors: Daisuke Sanga, Hisashi Kasai, Kazuhiro Miyagi
  • Publication number: 20070096077
    Abstract: A nitride semiconductor device having excellent ESD tolerance, by preventing uneven distribution of the electric current in the p-side nitride semiconductor layer. The p-side nitride semiconductor layer (40) comprises, from the active layer (30) side, (a) a p-side wide band gap layer (12) containing a p-type impurity and (b) a three-layer structure (15) comprising a first p-side nitride semiconductor layer (16), a second p-side nitride semiconductor layer (17), and a third p-side nitride semiconductor layer (18).
    Type: Application
    Filed: October 30, 2006
    Publication date: May 3, 2007
    Inventors: Daisuke Sanga, Hisashi Kasai, Kazuhiro Miyagi