Patents by Inventor Natuhiko Katahira

Natuhiko Katahira 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).

  • Variable intake device for internal combustion engines and method for manufacturing the device
    Patent number: 6758182
    Abstract: A valve body of an intake controlling valve, which is selectively opened and closed to communicate and interrupt communications between chambers which are divided by a partition wall in a resin surge tank, may be used for internal combustion engines. A variable intake device for an internal combustion engine is manufactured such that the valve unit is integrally assembled to a resin surge tank body by installing the valve unit into an opening of an outer wall of the resin surge tank and an opening of the partition wall formed at the partition wall and fixing the valve unit. Between the frame and the opening of the partition wall, and the valve unit and the opening of the outer wall are integrally fixed at their contact portions through adhesion with an adhesive or by welding.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: July 6, 2004
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Fumio Nomizo, Hideo Nakamura, Natuhiko Katahira
  • Variable intake device for internal combustion engines and method for manufacturing the device
    Publication number: 20020195076
    Abstract: A valve body of an intake controlling valve, which is selectively opened and closed to communicate and interrupt communications between chambers which are divided by a partition wall in a resin surge tank, may be used for internal combustion engines. A variable intake device for an internal combustion engine is manufactured such that the valve unit is integrally assembled to a resin surge tank body by installing the valve unit into an opening of an outer wall of the resin surge tank and an opening of the partition wall formed at the partition wall and fixing the valve unit. Between the frame and the opening of the partition wall, and the valve unit and the opening of the outer wall are integrally fixed at their contact portions through adhesion with an adhesive or by welding.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 26, 2002
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Fumio Nomizo, Hideo Nakamura, Natuhiko Katahira