Patents by Inventor Keshatoshi Takeuchi

Keshatoshi Takeuchi 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).

  • Brushless electric machine
    Patent number: 8319469
    Abstract: The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable of movement relative to the first drive member (30U); and a third drive member (30L) disposed at the opposite side from the first drive member (30U) with the second drive member (10) therebetween. The second drive member (10) has magnetic sensors (40A, 40B) for detecting the relative position of the first and second drive members. The third drive member (30L) has at locations facing the permanent magnets of the first drive member (30U) a plurality of magnetic field strengthening members (32L) for strengthening the magnetic field at the location of the second drive member (10) in conjunction with the permanent magnets.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: November 27, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Keshatoshi Takeuchi, Mamoru Sugimoto, Yojiro Okakura
  • Brushless electric machine
    Patent number: 8080967
    Abstract: The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable of movement relative to the first drive member (30U); and a third drive member (30L) disposed at the opposite side from the first drive member (30U) with the second drive member (10) therebetween. The second drive member (10) has magnetic sensors (40A, 40B) for detecting the relative position of the first and second drive members. The third drive member (30L) has at locations facing the permanent magnets of the first drive member (30U) a plurality of magnetic field strengthening members (32L) for strengthening the magnetic field at the location of the second drive member (10) in conjunction with the permanent magnets.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: December 20, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Keshatoshi Takeuchi, Mamoru Sugimoto, Yojiro Okakura