Patents by Inventor Tohru Oshita

Tohru Oshita 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).

  • Water pump for cooling engine
    Patent number: 7114926
    Abstract: A water pump for cooling an engine in which an impeller accommodated in a pump housing provided on an engine body is mounted on an end of a rotational shaft rotatably supported on the pump housing for enhancing the reliability of the mounting strength of the impeller while avoiding an increase in cost. A fitting recess for fitting an end of the rotational shaft having an outer circumferential surface which is straight in an axial direction at least in a portion on the impeller side is provided in a central portion of the impeller. A bolt inserted into the central portion of the impeller is threaded in a coaxial direction with the end of the rotational shaft in a state that is fitted in the fitting recess.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: October 3, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tohru Oshita, Toshimitsu Suzuki
  • Water pump for cooling engine
    Publication number: 20040247444
    Abstract: A water pump for cooling an engine in which an impeller accommodated in a pump housing provided on an engine body is mounted on an end of a rotational shaft rotatably supported on the pump housing for enhancing the reliability of the mounting strength of the impeller while avoiding an increase in cost. A fitting recess for fitting an end of the rotational shaft having an outer circumferential surface which is straight in an axial direction at least in a portion on the impeller side is provided in a central portion of the impeller. A bolt inserted into the central portion of the impeller is threaded in a coaxial direction with the end of the rotational shaft in a state that is fitted in the fitting recess.
    Type: Application
    Filed: March 23, 2004
    Publication date: December 9, 2004
    Inventors: Tohru Oshita, Toshimitsu Suzuki