Patents by Inventor Tetuo Yamagata

Tetuo Yamagata 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).

  • Empty can crusher
    Patent number: 4436026
    Abstract: An empty can crusher for crushing and flattening empty cans, comprising an inlet, a chute, a stopper device, a pressing device and a forked chute. Empty cans supplied in the crusher are crushed and flattened by the pressing device and are sorted into aluminium cans and steel cans by means of a magnet embedded in the pressing device, which fall down into respective receptacles through the forked chute.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: March 13, 1984
    Assignee: Hitachi Kiden Kogyo, Ltd.
    Inventors: Yoshinobu Imamura, Shigeki Kamei, Tetuo Yamagata, Hiroshi Fujii
  • Machine for scraping up grit
    Patent number: 4090619
    Abstract: A machine for scraping up grit which has a girder extending over grit chambers, an elevating frame parallel with the girder and adapted to rise and descend, a bucket conveyor stretched around sprocket wheels arranged at both ends of the elevating frame and at proper places above the girder, and a movable sprocket wheel, whereby scraping, scooping up and discharging of grit can be performed by the bucket conveyor.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: May 23, 1978
    Assignee: Hitachi Kiden Kogyo Ltd.
    Inventors: Minoru Higuchi, Tetuo Yamagata