Patents by Inventor Fujio Takeichi

Fujio Takeichi 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).

  • Developer collection device for a copying machine
    Patent number: 4218126
    Abstract: A shaft with a spiral blade is supported in a receptacle for receiving a developer removed from the surface of a photosensitive drum. The developer is conveyed toward a collection box during the rotation and movement of the shaft. When an excess load is applied to a screw shaft due to an overflow or blockage of the developer, the shaft is moved in a direction opposite to that in which the developer is conveyed, causing it to abut against a sensor to permit the sensor to be rendered ON.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: August 19, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Fujio Takeichi