Patents by Inventor Shigeru Takematsu

Shigeru Takematsu 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).

  • Apparatus for detecting defects in sheet material
    Patent number: 4131803
    Abstract: An apparatus for detecting a defect in a sheet like material, comprising: a photodetector provided opposite to a textile sheet in the vicinity of the weaving line of a weaving machine, and a prime mover for slidably driving said photodetector in the lateral direction throughout the width of the weaved textile sheet, characterized in that normally the said prime mover is adapted to convert the moving direction whenever the photodetector reaches either side edge of the weaved textile sheet but is further adapted to reverse the moving direction whenever the photodetector detects a defect in the weaved textile sheet, whereby said photodetector is caused to detect repeatedly the same defect and the weaving machine is controlled to stop the weaving operation whenever the photodetector detects the same defect more times than a predetermined number of times.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: December 26, 1978
    Assignees: Toyo Boseki Kabushiki Kaisha, Kasuga Denki Co., Ltd.
    Inventors: Shigeru Takematsu, Tohji Yoshida, Yukio Ikushima, Kunio Takeuchi, Arao Kakinaka, Koichi Matsunaga, Mamoru Shimakura, Yoji Komura