Patents by Inventor Mitutaka Hori

Mitutaka Hori 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).

  • Continuous treatment apparatus for treating waste material
    Patent number: 4279750
    Abstract: A continuous treatment apparatus for treating sewage in a sewage treatment plant or waste liquid in a factory comprising a rotary drum wherein the peripheral wall is constituted by pectinately juxtaposed stationary rings and movable rings interposed with minute clearances therebetween and slidable in the circumferential direction so that the sewage is filtered through the said minute clearances while the drum is rotated, sludge or solids being intercepted on the outside of the drum while the sewage is filtered through the said minute clearances, the drum being free from clogging since the sludge or solids are ejected by the circumferential sliding of the movable rings.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: July 21, 1981
    Inventor: Mitutaka Hori
  • Expansion and contraction drive apparatus
    Patent number: 4277335
    Abstract: The present invention relates to an expansion and contraction system of a plurality of arms, and for example to an expansion and contraction system applicable to a rake arm of a dirt remover for discharging dust from the effluent of an aqueduct.
    Type: Grant
    Filed: May 8, 1979
    Date of Patent: July 7, 1981
    Inventor: Mitutaka Hori