Patents by Inventor Tatsuo Shitara

Tatsuo Shitara 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).

  • Cylinder head
    Patent number: 9739376
    Abstract: A cylinder head includes a plurality of exhaust ports provided corresponding to a plurality of cylinders, and configured to converge outlets of the exhaust ports inside the cylinder head, at least one of the exhaust ports not being provided with a water jacket there above, and a pair of oil passages arranged so as to sandwich the at least one of the exhaust ports above which the water jacket is not provided. An inclined surface provided on an upper surface of the cylinder head and positioned between the pair of oil passages, the inclined surface being inclined from one oil passage, of the pair of oil passages, toward the other oil passage.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: August 22, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhiko Horie, Yukari Araki, Tatsuo Shitara
  • CYLINDER HEAD
    Publication number: 20150226328
    Abstract: A cylinder head includes a plurality of exhaust ports provided corresponding to a plurality of cylinders, and configured to converge outlets of the exhaust ports inside the cylinder head, at least one of the exhaust ports not being provided with a water jacket there above, and a pair of oil passages arranged so as to sandwich the at least one of the exhaust ports above which the water jacket is not provided. An inclined surface provided on an upper surface of the cylinder head and positioned between the pair of oil passages, the inclined surface being inclined from one oil passage, of the pair of oil passages, toward the other oil passage.
    Type: Application
    Filed: December 3, 2013
    Publication date: August 13, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhiko Horie, Yukari Araki, Tatsuo Shitara
  • EXHAUST PASSAGE STRUCTURE FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20150167583
    Abstract: Inner exhaust passages are provided with three or more curve through that extend toward downstream sides of exhaust gas flow and alternately curve to one side and the other side in directions of a cylinder center line.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 18, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hironobu Sakamoto, Nobuhiko Horie, Tatsuo Shitara