Patents by Inventor Masatoshi Ishizaki

Masatoshi Ishizaki 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).

  • Cleaning apparatus for inner surface of a tank
    Patent number: 5392798
    Abstract: A pair of expansion links each having a rotary jet nozzle are respectively expanded in the opposite two directions in synchronism with each other within a tank. With these link mechanisms capable of expansion and contraction, the link arms forming the links can be closed until the link arms are parallely adjoined to one another. The link mechanisms are driven by a driving shaft from outside the tank. The inner surface of the tank is scanned with streams of water sprayed from the nozzles along with the expansion of the expansion links thereby cleaning the inner surface of the tank.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: February 28, 1995
    Assignee: Kabushiki Kaisha Sugino Machine
    Inventors: Susumi Hirose, Masatoshi Ishizaki, Yoshimitsu Funawatashi, Yukihiro Funakawa