Patents by Inventor Masaki Simakura

Masaki Simakura 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).

  • Rotary pump having reinforcing wall in a passage
    Patent number: 5755565
    Abstract: A pump has inner and outer gears, suction and discharge passages, and a reinforcing member arranged in at least one of openings of the suction and discharge passages, the reinforcing member reinforcing a wall between the at least one opening and an inner peripheral surface of a gear pocket formed in a housing.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: May 26, 1998
    Assignee: Nissan Motor Co., Ltd
    Inventors: Takao Koyama, Masaki Simakura