Patents by Inventor Nikolai D. Vorobiev

Nikolai D. Vorobiev 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).

  • Ball-tube mill
    Patent number: 4949907
    Abstract: A ball-tube mill in which an inclined wall dividing the mill into coarse and fine grinding chambers occupied by grinding bodies has through holes for the passage of the material being ground provided in a portion of contact of the surface of the inclined wall with the grinding bodies present in the coarse grinding chamber. The through holes have a length much greater than their width with their elongated side running in parallel with an outer contour of the inclined wall.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: August 21, 1990
    Assignee: Belgorosky Tekhnologichesky Institut, Stroitelnykh Material OV Imeni, I.A. Grishmanova
    Inventors: Vasily S. Bogdanov, Nikolai S. Bogdanov, Nikolai D. Vorobiev, Alexandr D. Netesin
  • Ball tube mill
    Patent number: 4923127
    Abstract: A ball tube mill in which an inclined wall dividing a housing of the mill into coarse and fine grinding chambers is fabricated from rigidly interconnected rods forming therebetween through slots for the passage of the material being ground. Part of each slot in the area of contact of the inclined wall with the grinding bodies at the side of the fine grinding chamber has a width smaller than the part of each slot at the remaining portion of the inclined wall at the side of the fine grinding chamber.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: May 8, 1990
    Inventors: Vasily S. Bogdanov, Viktor S. Platonov, Nikolai S. Bogdanov, Jury G. Bedko, Ivan I. Miroshnichenko, Nikolai D. Vorobiev
  • Ball tube mill
    Patent number: 4917312
    Abstract: A ball tube mill has a housing with an inlet and an outlet for material to be comminuted accommodates annular wall plates spaced at a predetermined distance from each other, arranged at an angle to the longitudinal axis of the housing, and having the form of an ellipse. The space between the adjacent annular wall plates is somewhat greater than D/tan .alpha., where D is the inside diameter of the housing, and .alpha. is the inclination angle of the annular wall plate to the longitudinal axis of the housing.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: April 17, 1990
    Inventors: Vasily S. Bogdanov, Ivan I. Miroshnichenko, Nikolai S. Bogdanov, Nikolai D. Vorobiev, Vladimir Z. Pirotsky, Ivan N. Shevchenko