Patents by Inventor Fedor R. Krebel

Fedor R. Krebel 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).

  • Patent number: 4976472
    Abstract: A centrifugal mill having a feeder secured on a housing, the working surface of which has ribs and which accommodates a separator mounted on a shaft and arranged coaxially inside the housing to define an annular clearance with the working surface of the housing and having a cavity and a plurality of through holes in a side wall and balls placed in the cavity of the separator, some of the balls interacting during rotation of the separator with the ribs of the housing via the through holes in the side wall of the separator, the cavity of the separator accommodating a baffle defining with the separator an annular clearance of between 0.1 and 1.0 times the diameter of the ball, the annular clearance between the separator and working surface of the housing amounting to between 0.1 and 0.5 times the diameter of the ball, whereas the through holes in the separator have the form of slots.
    Type: Grant
    Filed: April 15, 1989
    Date of Patent: December 11, 1990
    Inventors: Vladimir I. Kozlov, Vladimir F. Redkin, Sergei A. Kozyrev, Vasily N. Borisov, Vladimir V. Boldyrev, Fedor R. Krebel, Nikolai M. Rubtsov