Patents by Inventor Kei Sameshima

Kei Sameshima 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 for manufacturing rotor core
    Patent number: 11646644
    Abstract: A method for manufacturing a rotor core includes detecting a height of a projecting portion formed on a lower die by a height detecting unit, and placing onto the lower die a core body in which a magnet insertion hole is formed such that the projecting portion is positioned in the magnet insertion hole when the height detecting unit has determined that the height of the projecting portion is within a set range. Additionally, the method includes bringing a permanent magnet in the magnet insertion hole into contact with an upper end of the projecting portion, and placing onto the core body a holding member after bringing the permanent magnet into contact with the upper end of the projecting portion. Melted resin is injected into the magnet insertion hole in which the permanent magnet has been inserted after placing the holding member onto the core body.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 9, 2023
    Inventors: Kei Sameshima, Shoichi Ono, Go Kato
  • METHOD FOR MANUFACTURING ROTOR CORE
    Publication number: 20210336517
    Abstract: A method for manufacturing a rotor core includes detecting a height of a projecting portion formed on a lower die by a height detecting unit, and placing onto the lower die a core body in which a magnet insertion hole is formed such that the projecting portion is positioned in the magnet insertion hole when the height detecting unit has determined that the height of the projecting portion is within a set range. Additionally, the method includes bringing a permanent magnet in the magnet insertion hole into contact with an upper end of the projecting portion, and placing onto the core body a holding member after bringing the permanent magnet into contact with the upper end of the projecting portion. Melted resin is injected into the magnet insertion hole in which the permanent magnet has been inserted after placing the holding member onto the core body.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: Kei SAMESHIMA, Shoichi ONO, Go KATO
  • Method for manufacturing rotor core
    Patent number: 11088600
    Abstract: A method for manufacturing a rotor core includes detecting a height of a projecting portion formed on a lower die by a height detecting unit, and placing onto the lower die a core body in which a magnet insertion hole is formed such that the projecting portion is positioned in the magnet insertion hole when the height detecting unit has determined that the height of the projecting portion is within a set range. Additionally, the method includes bringing a permanent magnet in the magnet insertion hole into contact with an upper end of the projecting portion, and placing onto the core body a holding member after bringing the permanent magnet into contact with the upper end of the projecting portion. Melted resin is injected into the magnet insertion hole in which the permanent magnet has been inserted after placing the holding member onto the core body.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: August 10, 2021
    Inventors: Kei Sameshima, Shoichi Ono, Go Kato
  • METHOD FOR MANUFACTURING ROTOR CORE
    Publication number: 20190089229
    Abstract: A method for manufacturing a rotor core includes detecting a height of a projecting portion formed on a lower die by a height detecting unit, and placing onto the lower die a core body in which a magnet insertion hole is formed such that the projecting portion is positioned in the magnet insertion hole when the height detecting unit has determined that the height of the projecting portion is within a set range. Additionally, the method includes bringing a permanent magnet in the magnet insertion hole into contact with an upper end of the projecting portion, and placing onto the core body a holding member after bringing the permanent magnet into contact with the upper end of the projecting portion. Melted resin is injected into the magnet insertion hole in which the permanent magnet has been inserted after placing the holding member onto the core body.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 21, 2019
    Applicant: Mitsui High-tec, Inc.
    Inventors: Kei Sameshima, Shoichi Ono, Go Kato