Patents by Inventor Kazuyuki Ohta

Kazuyuki Ohta 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: 10903727
    Abstract: A stator core of a rotary electric machine includes a yoke portion which has an annular shape, plural tooth portions protruding radially from an inner peripheral edge of the yoke portion toward a center, and plural fastening portions protruding radially outward from an outer peripheral edge of the yoke portion and each formed with a fastening member insertion hole through which a fastening member is inserted. The stator core is configured by a plurality of electromagnetic steel plates laminated via an adhesive layer. The yoke portion includes plural fastening portion inner regions, and plural non-fastening portion inner regions. The adhesive layer is disposed on the yoke portion. The adhesive layer includes at least one first adhering portion provided in each of the fastening portion inner regions, and at least one second adhering portion provided in each of the non-fastening portion inner regions.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: January 26, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shogo Miyazaki, Kazuyuki Ohta
  • Publication number: 20190280636
    Abstract: A motor control apparatus drives an inverter which supplies and receives electric power with respect to a motor by pulse width modulation. The motor control apparatus sets a frequency of a carrier such that a frequency of a sideband wave component of the carrier which is used for the pulse width modulation and a frequency of a predetermined rotation order of the motor become different from each other.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 12, 2019
    Inventors: Kazuyuki Ohta, Shinichi Yataka, Daisuke Hoshino, Yusaku Suzuki, Yoshihiro Ito, Takashi Sugawara, Hirohito Ide
  • Publication number: 20190245416
    Abstract: A stator core of a rotary electric machine includes a yoke portion which has an annular shape, plural tooth portions protruding radially from an inner peripheral edge of the yoke portion toward a center, and plural fastening portions protruding radially outward from an outer peripheral edge of the yoke portion and each formed with a fastening member insertion hole through which a fastening member is inserted. The stator core is configured by a plurality of electromagnetic steel plates laminated via an adhesive layer. The yoke portion includes plural fastening portion inner regions, and plural non-fastening portion inner regions. The adhesive layer is disposed on the yoke portion. The adhesive layer includes at least one first adhering portion provided in each of the fastening portion inner regions, and at least one second adhering portion provided in each of the non-fastening portion inner regions.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 8, 2019
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shogo MIYAZAKI, Kazuyuki OHTA
  • Publication number: 20190149005
    Abstract: A stator of a rotating electric machine includes a stator core provided with a plurality of slots along a circumferential direction, coils of a plurality of phases distributedly wound around the stator core via the plurality of slots, and an insulating paper disposed between the slot and the coil. The insulating paper has an adhesive portion which fixes the coil to the stator core and a part of the coil of each phase is fixed to the stator core by the adhesive portion.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 16, 2019
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tadashi YAMAGUCHI, Ryutaro KATO, Tomohiro KOTA, Yusuke KAWANO, Takashi SUGAWARA, Kazuyuki OHTA, Tadamichi SASAKI, Taisuke MARUYAMA
  • Publication number: 20190109506
    Abstract: There is provided a stator of a rotary electric machine which includes a stator core including a plurality of slots in a circumferential direction thereof, a coil inserted into each of the slots, and an insulation paper disposed between each of the slots and the coil. The insulation paper includes a first adhesive layer provided on one surface of the insulation paper and a second adhesive layer provided on the other surface of the insulation paper. The first adhesive layer and the second adhesive layer are disposed to be displaced from each other when the insulation paper located on one side in the circumferential direction is viewed from the coil inserted into the slot.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 11, 2019
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tadashi YAMAGUCHI, Ryutaro KATO, Tomohiro KOTA, Yusuke KAWANO, Takashi SUGAWARA, Kazuyuki OHTA, Taisuke MARUYAMA, Tadamichi SASAKI
  • Publication number: 20020083849
    Abstract: A method of press-working an inorganic substrate, which method uses a vacuum press machine having an air plunger type pressurization system and comprises bringing upper and lower heat plates which have been heated up to a predetermined temperature into contact with a combination set disposed between the upper and lower heat plates after or before the initiation of pressure reduction of a press atmosphere or under a reduced pressure and then carrying out a low pressure loading of from the initiation of pressurization to 0.05 Mpa over 10 seconds or longer and a press machine which is suitable for the above press-working method and which can set and control a low-pressure of 0.02 MPa or lower and comprises an air plunger that works as an air damper when the upper heat plate descends.
    Type: Application
    Filed: December 26, 2001
    Publication date: July 4, 2002
    Inventors: Kazuyuki Ohta, Norio Sqyama
  • Patent number: 4647815
    Abstract: A resistor for use in a cathode ray tube comprises an insulating plate provided thereon with at least first and second electrode terminals for use respectively with relatively high and low voltages in the cathode ray tube, a coating insulator provided on the insulating plate for covering the same, and a resistive layer provided in a predetermined pattern on the insulating plate between first and second electrode terminals to be covered by the coating insulator and accompanied with a piece of conductive layer provided on the insulating plate at an area between first and second electrode terminals including a high potential difference position where a relatively large potential difference is applied to the coating insulator when the resistor is used in the cathode ray tube.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: March 3, 1987
    Assignee: Sony Corporation
    Inventors: Yoshirou Ishikawa, Kazuyuki Ohta, Shinobu Mitsuhashi