Patents by Inventor Taishi Tarui

Taishi Tarui 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).

  • Laser weld quality monitoring method and system
    Patent number: 6710283
    Abstract: Infrared reflection of a laser beam (LB3) irradiated on a welding part (WP) of work (5) is detected by a sensor (6a) high of elevation angle, where it is converted into an electrical signal, which is processed by a measuring circuit (MC) to be input to a quality monitor (QM), where it is stored as a data in a memory (7g), which data is processed by way of a spectral analysis, which calculates a spectral distribution of electrical signal, and a signal power sum in a particular frequency band, to be compared with a threshold value for decision on occurrence of a significant porous state.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: March 23, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kiyokazu Mori, Taishi Tarui, Shinsuke Takemura
  • Laser weld quality monitoring method and system
    Publication number: 20020144984
    Abstract: Infrared reflection of a laser beam (LB3) irradiated on a welding part (WP) of work (5) is detected by a sensor (6a) high of elevation angles where it is converted into an electrical signal, which is processed by a measuring circuit (MC) to be input to a quality monitor (QM), where it is stored as a data in a memory (7g), which data is processed by way of a spectral analysis, which calculates a spectral distribution of electrical signal, and a signal power sum in a particular frequency band, to be compared with a threshold value for decision on occurrence of a significant porous state.
    Type: Application
    Filed: February 25, 2002
    Publication date: October 10, 2002
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kiyokazu Mori, Taishi Tarui, Shinsuke Takemura