Patents by Inventor Norio Tsuzuki

Norio Tsuzuki 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).

  • Fuel injection nozzle
    Patent number: 6378792
    Abstract: A fuel injection nozzle is provided with a valve seat having a valve opening in which a valve is slidably provided, and a seat portion on which the valve is seated, and a nozzle tip having a sack portion and an injection opening 36a formed on the sack portion. The valve seat is formed of metal, and at the same time, the nozzle tip is molded by metal injection molding, wherein the valve seat and nozzle tip are joined by welding, or after the injection opening of the nozzle tip is formed from the upstream side in the fuel injection direction by laser machining, the valve seat and nozzle tip are joined by welding.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: April 30, 2002
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kanehiro Fukaya, Masami Hirata, Norio Tsuzuki, Hiroshi Oda, Tsuneaki Aoki
  • FUEL INJECTION NOZZLE
    Publication number: 20020008166
    Abstract: A fuel injection nozzle is provided with a valve seat having a valve opening in which a valve is slidably provided, and a seat portion on which the valve is seated, and a nozzle tip having a sack portion and an injection opening 36a formed on the sack portion. The valve seat is formed of metal, and at the same time, the nozzle tip is molded by metal injection molding, wherein the valve seat and nozzle tip are joined by welding, or after the injection opening of the nozzle tip is formed from the upstream side in the fuel injection direction by laser machining, the valve seat and nozzle tip are joined by welding.
    Type: Application
    Filed: April 5, 1999
    Publication date: January 24, 2002
    Inventors: KANEHIRO FUKAYA, MASAMI HIRATA, NORIO TSUZUKI, HIROSHI ODA, TSUNEAKI AOKI