Patents by Inventor Tatemitsu Hirayama

Tatemitsu Hirayama 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).

  • Tool monitoring system
    Patent number: 4918616
    Abstract: A tool monitoring system for detecting a tool failure of a tool employed in a tool machine, comprising artificial signal generating unit for generating a predetermined artificial tool failure signal simulating the acoustic emission signal obtained in an actual failure of the tool, acoustic emission transducing unit adapted to be mounted on the tool machine near the tool and driven by the artificial signal generating unit for applying the artificial tool failure signal to the tool machine, acoustic emission sensing unit mounted on the tool machine near the tool so as to receive, in a setting mode of the system where the transducing unit is mounted on the machine, the applied artificial tool failure signal from the acoustic emission transducing unit through the tool machine and, in a monitoring mode of the system where the tool is operated, an acoustic emission from the tool, and signal processing unit for analyzing an output signal generated from the acoustic emission sensing unit to detect the tool failure of
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: April 17, 1990
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Kiyokazu Yoshimura, Norio Miyawaki, Hiroyuki Yamada, Hideaki Nakamura, Koichi Tshujino, Takaharu Takinami, Tatemitsu Hirayama, Tatsuhiko Naito, Ryoichi Miyake, Takeshi Yamada, Tetsuro Iwakiri, Kazuaki Otsuka