Patents by Inventor Hiroshi Sakamari

Hiroshi Sakamari 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).

  • Vane pump with rotatable annular ring means to control vane extension
    Patent number: 5022842
    Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: June 11, 1991
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Hiroshi Sakamari, Yukio Horikoshi, Takeshi Jinnouchi, Kenji Tanzawa