Patents by Inventor Toshikazu Iwama

Toshikazu Iwama 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).

  • Decompression apparatus and internal combustion engine having the same
    Patent number: 7621247
    Abstract: A decompression apparatus includes a plunger and a decompression shaft. The plunger is provided in a plunger hole formed in a cam shaft which is configured to move an engine valve of an internal combustion engine. The plunger is movable in the plunger hole between a decompression position in which the plunger opens the engine valve and a decompression cancel position in which the plunger does not open the engine valve. The plunger hole has a first opening which partially locates on a cam surface of a valve cam which is provided on the cam shaft. A first end portion of the plunger protrudes from the first opening to open the engine valve in the decompression position. The decompression shaft is provided in the cam shaft and configured to move the plunger between the decompression position and the decompression cancel position.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: November 24, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toshikazu Iwama, Kazuyuki Asakura, Hideyuki Tawara, Akira Tokito
  • DECOMPRESSION APPARATUS AND INTERNAL COMBUSTION ENGINE HAVING THE SAME
    Publication number: 20080011257
    Abstract: A decompression apparatus includes a plunger and a decompression shaft. The plunger is provided in a plunger hole formed in a cam shaft which is configured to move an engine valve of an internal combustion engine. The plunger is movable in the plunger hole between a decompression position in which the plunger opens the engine valve and a decompression cancel position in which the plunger does not open the engine valve. The plunger hole has a first opening which partially locates on a cam surface of a valve cam which is provided on the cam shaft. A first end portion of the plunger protrudes from the first opening to open the engine valve in the decompression position. The decompression shaft is provided in the cam shaft and configured to move the plunger between the decompression position and the decompression cancel position.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 17, 2008
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Toshikazu IWAMA, Kazuyuki Asakura, Hideyuki Tawara, Akira Tokito