Patents Assigned to Takeshi Sato
  • Positive-displacement piston mechanism having a rotary piston structure
    Patent number: 6152718
    Abstract: A positive-displacement piston mechanism includes a small rotor integrated with a main axis and biased against a cylindrical large rotor for holding a bearing-housing. Slant sliding slots are formed at facing places in equally divided space between the large rotor and the small rotor. Vanes having an angle are fitted into the slots as if they were bridges, and an inlet and an outlet are provided on side-housings.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: November 28, 2000
    Assignee: Takeshi Sato
    Inventor: Hiroshi Kobayashi, deceased