Patents by Inventor Nobuhisa Kakehashi

Nobuhisa Kakehashi 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 valve
    Patent number: 6698666
    Abstract: In a fuel injection valve having a pressure control chamber, a nozzle, and an electromagnetic valve, a fuel flow-in passage, a fuel flow-out passage and at least a part of the pressure control chamber are formed in a single piece of a plate in such a manner that the part of the pressure control chamber is opened to an axial end surface of the plate and the fuel flow-out passage extends so as to penetrate the plate axially from an inner wall of the part of the pressure control chamber to another axial end surface of the plate and the fuel flow-in passage comprises a first passage extending from the axial end surface of the plate and a second passage extending from the inner wall of the part of the pressure control chamber, which intersect with each other within the plate, wherein an entrance orifice is formed in first passage.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: March 2, 2004
    Assignee: Denso Corporation
    Inventors: Koichi Ohata, Nobuhisa Kakehashi, Toshiyuki Yoda, Eiji Itou
  • Fuel injection valve
    Publication number: 20030052202
    Abstract: In a fuel injection valve having a pressure control chamber, a nozzle, and an electromagnetic valve, a fuel flow-in passage, a fuel flow-out passage and at least a part of the pressure control chamber are formed in a single piece of a plate in such a manner that the part of the pressure control chamber is opened to an axial end surface of the plate and the fuel flow-out passage extends so as to penetrate the plate axially from an inner wall of the part of the pressure control chamber to another axial end surface of the plate and the fuel flow-in passage comprises a first passage extending from the axial end surface of the plate and a second passage extending from the inner wall of the part of the pressure control chamber, which intersect with each other within the plate, wherein an entrance orifice is formed in first passage.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 20, 2003
    Inventors: Koichi Ohata, Nobuhisa Kakehashi, Toshiyuki Yoda, Eiji Itou