Patents by Inventor Umeo Inoue

Umeo Inoue 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
    Patent number: 6619939
    Abstract: A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: September 16, 2003
    Assignee: Takuma Co., Ltd.
    Inventors: Umeo Inoue, Satoshi Shibata, Hiroyuki Kishida
  • Rotary pump
    Publication number: 20030072667
    Abstract: A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side.
    Type: Application
    Filed: January 9, 2002
    Publication date: April 17, 2003
    Inventors: Umeo Inoue, Satoshi Shibata, Hiroyuki Kishida