Patents by Inventor Vladimir Z. Pirotsky

Vladimir Z. Pirotsky 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: 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