Patents by Inventor Toyohiro Hoshiyama

Toyohiro Hoshiyama 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).

  • Wire saw with tension detecting means and guide roller speed control
    Patent number: 8881716
    Abstract: The present invention provides a wire saw which cuts a workpiece using a cutting wire and is capable of adjusting wire tension with high responsiveness. The wire saw includes first and second workpiece cutting units 1A and 1B. Each of the workpiece cutting units 1A and 1B includes a pair of guide rollers 10a and 10b around which a wire W is wound to form a workpiece-cutting wire group. The wire saw further includes a tension detector 18 which detects tension in the wire W between the workpiece cutting units 1A and 1B, and a control device 50. The control device 50 changes a rotational speed of the guide rollers 10a and 10b of at least one of the workpiece cutting units based on the tension detected by the tension detector 18 so as to keep the tension within an acceptable range.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: November 11, 2014
    Assignee: Toyo Advanced Technologies Co., Ltd.
    Inventors: Toyohiro Hoshiyama, Shoji Imakurusu, Hiroyuki Yoshimura, Tatsumi Hamasaki
  • WIRE SAW
    Publication number: 20120298091
    Abstract: The present invention provides a wire saw which cuts a workpiece using a cutting wire and is capable of adjusting wire tension with high responsiveness. The wire saw includes first and second workpiece cutting units 1A and 1B. Each of the workpiece cutting units 1A and 1B includes a pair of guide rollers 10a and 10b around which a wire W is wound to form a workpiece-cutting wire group. The wire saw further includes a tension detector 18 which detects tension in the wire W between the workpiece cutting units 1A and 1B, and a control device 50. The control device 50 changes a rotational speed of the guide rollers 10a and 10b of at least one of the workpiece cutting units based on the tension detected by the tension detector 18 so as to keep the tension within an acceptable range.
    Type: Application
    Filed: February 8, 2010
    Publication date: November 29, 2012
    Applicant: TOYO ADVANCED TECHNOLOGIES CO., LTD.
    Inventors: Toyohiro Hoshiyama, Shoji Imakurusu, Hiroyuki Yoshimura, Tatsumi Hamasaki