Patents by Inventor Isamu Oonuma

Isamu Oonuma 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).

  • Molten metal feed apparatus of die casting machine, molten metal feed method, and ladle
    Patent number: 7021361
    Abstract: A molten metal feed apparatus of a die casting machine preventing shortening of the lifetime of a sleeve due to local heating of the sleeve, provided with a ladle having a receptacle for holding the molten metal and a conveyor system for conveying the ladle to a predetermined feed position of the sleeve of the die casting machine and tilting the ladle to pour the scooped up molten metal into the sleeve, wherein the position of a front end of a pouring spout of the ladle with respect to the sleeve is changed in accordance with a change in posture of the ladle while pouring the molten metal into the sleeve.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: April 4, 2006
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Kazuya Hara, Isamu Oonuma
  • Monten metal feed apparatus of die casting machine, molten metal feed method, and ladle
    Publication number: 20040163791
    Abstract: A molten metal feed apparatus of a die casting machine preventing shortening of the lifetime of a sleeve due to local heating of the sleeve, provided with a ladle having a receptacle for holding the molten metal and a conveyor system for conveying the ladle to a predetermined feed position of the sleeve of the die casting machine and tilting the ladle to pour the scooped up molten metal into the sleeve, wherein the position of a front end of a pouring spout of the ladle with respect to the sleeve is changed in accordance with a change in posture of the ladle while pouring the molten metal into the sleeve.
    Type: Application
    Filed: December 24, 2003
    Publication date: August 26, 2004
    Applicant: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Kazuya Hara, Isamu Oonuma