Patents by Inventor Yuzo Ohta

Yuzo 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).

  • Laminated rotor and method for balancing the same
    Patent number: 10622873
    Abstract: In the case of a laminated rotor core 10, insertion of permanent magnets 14 and filling of resin 15 into each of magnet insertion holes 13 are performed in order to cancel out a problem of an imbalanced weight estimated from a deviation of lamination thickness in a circumferential direction of a laminated core body 12, and a manufacturing method includes a step of measuring a deviation of lamination thickness in which an imbalanced weight is estimated by measuring the deviation of lamination thickness in the circumferential direction of the laminated core body 12, and a step of balance adjustment in which the insertion of the permanent magnets 14 into each of the magnet insertion holes 13 and the filling of resin 15 into each of the magnet insertion holes 13 are performed in a manner that cancels out a problem of this imbalanced weight.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: April 14, 2020
    Assignees: MITSUI HIGH-TEC, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Nagai, Kenji Katsuki, Go Kato, Jin Oda, Yuzo Ohta, Masashi Matsumoto, Tatsuhiko Mizutani
  • LAMINATED ROTOR CORE AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20160013709
    Abstract: In the case of a laminated rotor core 10, insertion of permanent magnets 14 and filling of resin 15 into each of magnet insertion holes 13 are performed in order to cancel out a problem of an imbalanced weight estimated from a deviation of lamination thickness in a circumferential direction of a laminated core body 12, and a manufacturing method includes a step of measuring a deviation of lamination thickness in which an imbalanced weight is estimated by measuring the deviation of lamination thickness in the circumferential direction of the laminated core body 12, and a step of balance adjustment in which the insertion of the permanent magnets 14 into each of the magnet insertion holes 13 and the filling of resin 15 into each of the magnet insertion holes 13 are performed in a manner that cancels out a problem of this imbalanced weight.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Applicants: Mitsui High-tec, Inc., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Nagai, Kenji Katsuki, Go Kato, Jin Oda, Yuzo Ohta, Masashi Matsumoto, Tatsuhiko Mizutani
  • High-voltage variable resistor
    Patent number: 4471339
    Abstract: A high-voltage variable resistor including a substrate, a sliding member provided so as to be rotated in sliding contact with the substrate, a casing for accommodating the substrate and sliding member in it, a plurality of connecting terminals connected to the substrate and sliding member, and a rotational rod coupled with the sliding member. The resistor further includes a plurality of springs for electrically connecting, respectively, the connecting terminals to the substrate so that the connecting terminals may be disposed in parallel with opposite surfaces of the substrate.
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: September 11, 1984
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yutaka Fukada, Noriya Nishimura, Yuzo Ohta, Yohei Shimizu, Mituru Kohda
  • Flame retarding polyolefin resin blend composition
    Patent number: 4234469
    Abstract: Flame retarded resin compositions are formed of specified quantities of polypropylene, polyethylene, inorganic filler and flame retarder such as an organic halide.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: November 18, 1980
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Yuzo Ohta, Norio Sugi, Osamu Isogai, Takahiro Hirai, Hidehiko Kaji