Patents by Inventor Akira Asakawa

Akira Asakawa 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).

  • Apparatus for detecting elongation of a joint of a conveyor belt
    Patent number: 4106005
    Abstract: An apparatus for detecting elongation of the joint of a conveyor belt has a pair of sensors, each of which includes an iron core having a coil winding therearound and being spaced at a predetermined distance from each other parallel with the conveyor belt and which distance is greater than the length of the joint along the belt. A pair of magnetic elements is fixed to the underside surface of the belt, the magnetic elements being spaced from each other a distance equal to the distance between the sensors when the joint is unelongated, so that said sensors and elements are aligned during movement of the conveyor belt past the sensors.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: August 8, 1978
    Assignee: Nippon Konbeya Kabushiki Kaisha
    Inventor: Akira Asakawa