Patents by Inventor Toshiaki Sone

Toshiaki Sone 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).

  • Motor drive device
    Patent number: 7898195
    Abstract: The present invention presents a motor drive device capable of detecting jamming accurately without falsely detecting jamming when a movable part contacts with other members. Jamming by a backrest is detected by judging whether the value of a period of one pulse P1 and a period of the next pulse P2 (P2/P1) integrated for 150 times (integrated value: 150) exceeds a specified threshold (160) or not. Accordingly, if the backrest rubs against a backrest of an adjacent seat, and the motor speed suddenly drops for a short period, such “warp” is not falsely detected as jamming, and only actual jamming can be detected securely.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: March 1, 2011
    Assignees: Kabushiki Kaisha Imasen Denki Seisakusho, NHK Spring Co., Ltd
    Inventors: Toshiaki Sone, Akira Sakoguchi, Hiroyuki Ueki, Takeshi Nakamura, Akira Sasaki
  • MOTOR DRIVE DEVICE
    Publication number: 20090039812
    Abstract: The present invention presents a motor drive device capable of detecting jamming accurately without falsely detecting jamming when a movable part contacts with other members. Jamming by a backrest is detected by judging whether the value of a period of one pulse P1 and a period of the next pulse P2 (P2/P1) integrated for 150 times (integrated value: 150) exceeds a specified threshold (160) or not. Accordingly, if the backrest rubs against a backrest of an adjacent seat, and the motor speed suddenly drops for a short period, such “warp” is not falsely detected as jamming, and only actual jamming can be detected securely.
    Type: Application
    Filed: November 27, 2007
    Publication date: February 12, 2009
    Applicants: KABUSHIKI KAISHA IMASEN DENKI SEISAKUSHO, NHK SPRING CO., LTD
    Inventors: Toshiaki Sone, Akira Sakoguchi, Hiroyuki Ueki, Takeshi Nakamura, Akira Sasaki