Patents by Inventor Akihumi Hukui

Akihumi Hukui 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 internal combustion engines
    Patent number: 5795137
    Abstract: The present invention relates to a water pump for an internal combustion engine, capable of effectively preventing the entry of dust into a bearing for an impeller shaft, and of providing a simply constructed and small-sized dustproof function. To this end, a fan (32) is mounted on a portion of an impeller shaft (18) which is positioned within a cup-shaped hood (30), and the inflow of dust into the bearings (22F, 22R) is prevented by the fan (32). The hood (30) is provided with blowout holes (44) in the portions thereof which are opposed to the outer circumference of the fan (32).
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: August 18, 1998
    Assignee: Komatsu Ltd.
    Inventors: Godo Ozawa, Hidetada Fukushima, Toshihiko Nishiyama, Akihumi Hukui, Masaki Shinohara