Patents by Inventor Kougi Nagai

Kougi Nagai 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).

  • Radial piston pump
    Patent number: 4927338
    Abstract: A radial piston pump for the automotive brake system has a rotor, a couple of pistons reciprocated within a respective cylinder formed within the rotor and a bearing. The top end of the piston abuts directly to the inner surface so that no show is existed therebetween. The relationship within a starting point and a finishing point of a suction groove, a starting point and a finishing point of a disharge groove and an opening port the cylinder is designed in such a manner that at least one of a couple of cylinders connects to the suction groove during a whole rotation of the rotor.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: May 22, 1990
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiaki Ito, Kougi Nagai, Akihiko Sawada, Hideyuki Koike