Patents by Inventor Ryukichi Tsuno

Ryukichi Tsuno 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).

  • High-precision equipment
    Patent number: 4784541
    Abstract: A high precision processing equipment includes a contactor provided in a numerical control processing unit and moved in a direction parallel to a spindle, so that the contactor is brought into contact with a workpiece or its support member during feeding motion of the spindle so as to define a positional relationship between the contactor and the spindle. When a magnetic-electric converting element attached to the contactor is opposed to a magnet on the spindle during feeding movement of the spindle, the element detects movement of the magnet, and a resulting detection signal is used to obtain a positional relationship between the spindle and a workpiece, i.e. the starting position of a subsequent processing motion during activation of the processing unit.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: November 15, 1988
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventors: Toshiyasu Umehara, Ryukichi Tsuno, Tsutomu Miyawaki