Patents by Inventor Shuichi Kawabata

Shuichi Kawabata 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).

  • Publication number: 20240192047
    Abstract: The present invention relates to a rubbing position identification device for a rotating machine provided with a fixed part and a rotating part. This device is provided with an AE sensor, an axial vibration sensor and a rubbing position identification unit. In the case of rubbing occurring in the rotating machine, the rubbing position identification unit calculates the AE phase, which corresponds to the peak of an envelope determined on the base of change over time in the AE signal detected by the AE sensor, and the axial vibration phase, which corresponds to the high spot position of the rotating part specified on the basis of the change over time in the axial vibration signal detected by the axial vibration sensor, and, on the basis of the phase difference between these, identifies the circumferential-direction position of where rubbing has occurred in the rotating machine.
    Type: Application
    Filed: March 30, 2022
    Publication date: June 13, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroki Takeda, Satoshi Kumagai, Ryo Kawabata, Shuichi Ishizawa, Masahiko Yamashita, Yoshinori Tanaka
  • Publication number: 20240167395
    Abstract: A rotating machine includes a rotating part rotatably supported by a bearing disposed between a first stationary part and a second stationary part. A rubbing position identification device determines, when rubbing occurs on the rotating machine, whether the occurrence position of the rubbing is a first unit including the first stationary part or a second unit including the second stationary part, based on an AE signal detected by a pair of first AE sensors attached to the first stationary part and the second stationary part, respectively.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 23, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Kumagai, Ryo Kawabata, Shuichi Ishizawa, Masahiko Yamashita, Yoshinori Tanaka
  • Publication number: 20240142346
    Abstract: An AE signal is acquired from an AE sensor disposed on a fixed part of the rotating machine, and the presence or absence of rubbing in the rotating machine is determined, based on the AE signal. As a result, if the rubbing is determined to be present, a rubbing suppression operating condition imposed on control of the rotating machine is decided to suppress the rubbing.
    Type: Application
    Filed: March 2, 2022
    Publication date: May 2, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Kumagai, Ryo Kawabata, Shuichi Ishizawa, Masahiko Yamashita, Yoshinori Tanaka, Shinnosuke Haga
  • Patent number: 6121951
    Abstract: In a data processing apparatus, data stored in a storage section are retrieved according to a desired retrieval condition so as to be displayed on a display section. When the retrieved data are displayed on the display section, not only the retrieved data but also the retrieval condition are displayed. As a result, both the retrieved results and the retrieval condition can be exactly recognized on the display screen at a glance.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: September 19, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shuichi Kawabata, Mami Iida, Hideaki Chijiwa