Patents by Inventor Yoshihisa Hojo

Yoshihisa Hojo 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).

  • Method of preheating unfinished stator
    Patent number: 11770057
    Abstract: A method of preheating an unfinished stator as an intermediate product before a stator as a final product for a motor is provided in order to preheat a mold for molding together with the unfinished stator in short time by using preheating facilities with simplified structures. In the method, the mold has a hollow and longitudinal barrel portion and a flange portion extending outward from an end of the barrel portion. The flange portion is arranged at a horizontal position to turn the barrel portion upward and an end of a cylindrical and longitudinal frame is put on the flange portion in a state where a core of the unfinished stator is fitted in the frame. A heat-resistant box of which an underside is opened covers the frame and the mold to surrounded outsides of the frame and the mold.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: September 26, 2023
    Assignee: TOYO ELECTRIC MFG. CO., LTD.
    Inventors: Kenji Fujiwara, Yoshihiro Okamoto, Yoshihisa Hojo, Keiichi Morinaga, Yuya Iwamoto, Kyouji Okamoto
  • Method of Preheating Unfinished Stator
    Publication number: 20220416631
    Abstract: A method of preheating an unfinished stator as an intermediate product before a stator as a final product for a motor is provided in order to preheat a mold for molding together with the unfinished stator in short time by using preheating facilities with simplified structures. In the method, the mold has a hollow and longitudinal barrel portion and a flange portion extending outward from an end of the barrel portion. The flange portion is arranged at a horizontal position to turn the barrel portion upward and an end of a cylindrical and longitudinal frame is put on the flange portion in a state where a core of the unfinished stator is fitted in the frame. A heat-resistant box of which an underside is opened covers the frame and the mold to surrounded outsides of the frame and the mold.
    Type: Application
    Filed: July 9, 2020
    Publication date: December 29, 2022
    Applicant: TOYO ELECTRIC MFG. CO., LTD.
    Inventors: Kenji Fujiwara, Yoshihiro Okamoto, Yoshihisa Hojo, Keiichi Morinaga, Yuya Iwamoto, Kyouji Okamoto