Patents by Inventor Mitsunobu Tsunoo

Mitsunobu Tsunoo 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).

  • Screw fastening apparatus
    Patent number: 4320674
    Abstract: Screw-holding device for receiving a screw are supported from three directions around the device and incline, whenever necessary. The screw-holding devices move in parallel at times. There are also provided engaging devices that are combined with the screw-holding devices and transmit a rotational torque to the screw-holding devices. A space is secured between these two devices for allowing the inclination of the screw-holding device.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: March 23, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Genji Ito, Mitsunobu Tsunoo, Fumio Fukuchi