Patents by Inventor Yohei Toyomaru

Yohei Toyomaru 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 band-shaped stator core sheets
    Patent number: 9935530
    Abstract: Provided are a method for manufacturing band-shaped stator core sheets, capable of efficiently separating the band-shaped stator core sheets having engaged magnetic pole pieces, and a die apparatus used therefor. The method comprises placing tips of magnetic pole pieces 12, 13 of first and second band-shaped stator core sheets 10, 11 on inner peripheries of yoke pieces 16, 15, a slot punching step for forming gaps of the magnetic pole pieces 12, 13, a shear-cutting step for cutting the tips of the magnetic pole pieces 12, 13 from the inner peripheries of the yoke pieces 16, 15, respectively, a correction step for returning the magnetic pole pieces 12, 13 bent by the shear-cutting step to their original states, and a separation step for separating the first and second band-shaped stator core sheets 10, 11 with the magnetic pole pieces 12, 13 pressed back by the correction step.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: April 3, 2018
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Yohei Toyomaru, Shusaku Munaoka, Yoshiharu Kouno
  • METHOD FOR MANUFACTURING BAND-SHAPED STATOR CORE SHEETS AND DIE APPARATUS USED THEREFOR
    Publication number: 20150020375
    Abstract: Provided are a method for manufacturing band-shaped stator core sheets, capable of efficiently separating the band-shaped stator core sheets having engaged magnetic pole pieces, and a die apparatus used therefor. The method comprises placing tips of magnetic pole pieces 12, 13 of first and second band-shaped stator core sheets 10, 11 on inner peripheries of yoke pieces 16, 15, a slot punching step for forming gaps of the magnetic pole pieces 12, 13, a shear-cutting step for cutting the tips of the magnetic pole pieces 12, 13 from the inner peripheries of the yoke pieces 16, 15, respectively, a correction step for returning the magnetic pole pieces 12, 13 bent by the shear-cutting step to their original states, and a separation step for separating the first and second band-shaped stator core sheets 10, 11 with the magnetic pole pieces 12, 13 pressed back by the correction step.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 22, 2015
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Yohei Toyomaru, Shusaku Munaoka, Yoshiharu Kouno