Patents Assigned to Tokyo Press & Die Co., Ltd.
  • Method for molding a bulge
    Patent number: 4265102
    Abstract: A method for molding a bulge comprises a step of jetting a pressure fluid from a nozzle into a shaped blank fitted thereto thereby causing air trapped in the shaped blank to be agitated into air bubbles to allow the fluid pressure to be applied onto the inner surface of the shaped blank during discharging the liquid from within the blank.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: May 5, 1981
    Assignee: Tokyo Press & Die Co., Ltd.
    Inventors: Ryuji Shimakata, Kazuyoshi Naito