Patents by Inventor Toyohisa Tsuruta

Toyohisa Tsuruta 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).

  • Electromagnetic device
    Patent number: 7091807
    Abstract: An attraction coil, a repulsion coil and a plunger are disposed in a magnetic path of an electromagnetic device. An starting flux generating section is disposed between the attraction coil and the repulsion coil in the magnetic path. A magnetic flux of the starting flux generating section is repulsed magnetically by a magnetic flux of the repulsion coil at a part of the magnetic path to start the plunger. The plunger is attracted to one of first and second magnetic path parts by electromagnetic forces generated from magnetic fluxes of the attraction coil and the repulsion coil.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: August 15, 2006
    Assignees: Japan AE Power Systems Corporation, Technical Consulting Tanimizu Ltd.
    Inventors: Toru Tanimizu, Toyohisa Tsuruta, Toshimasa Fukai, Akira Nishijima, Hiroshi Fujimaki, Yoshiyuki Tanimizu
  • Electromagnetic device
    Publication number: 20050057103
    Abstract: An attraction coil, a repulsion coil and a plunger are disposed in a magnetic path of an electromagnetic device. An starting flux generating section is disposed between the attraction coil and the repulsion coil in the magnetic path. A magnetic flux of the starting flux generating section is repulsed magnetically by a magnetic flux of the repulsion coil at a part of the magnetic path to start the plunger. The plunger is attracted to one of first and second magnetic path parts by electromagnetic forces generated from magnetic fluxes of the attraction coil and the repulsion coil.
    Type: Application
    Filed: August 10, 2004
    Publication date: March 17, 2005
    Inventors: Toru Tanimizu, Toyohisa Tsuruta, Toshimasa Fukai, Akira Nishijima, Hiroshi Fujimaki, Yoshiyuki Tanimizu