Patents by Inventor Ivan F. Evkin

Ivan F. Evkin 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).

  • Rotary film apparatus
    Patent number: 4199398
    Abstract: A rotary film apparatus comprising a vertical body housed in a jacket and having a heat-exchanging surface formed, according to the invention, by series-connected and oppositely directed conjugated truncated cones, the bases of said cones being made rounded.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: April 22, 1980
    Inventors: Ivan F. Evkin, Viktor M. Olevsky, Vitaly R. Ruchinsky, Valentin A. Tatyanchikov, Jury N. Nikolaev
  • Film-type rotary mass-and-heat exchange column
    Patent number: 4198361
    Abstract: The film-type rotary mass-and-heat exchange column comprises a shell which accommodates a vertical shaft carrying the contact stages held in position thereto. The contact stages are formed by the bands curved into the spirals diverging from the shaft and flanged towards the latter at their edges. The bands are provided with longitudinal beads bulging outwards on the concave surface of the bands so as to establish a number of channels adjacent for height.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: April 15, 1980
    Inventors: Alexandr V. Shafranovsky, Vitaly R. Ruchinsky, Viktor M. Olevsky, Vladimir P. Gavrilin, Vladimir K. Chubukov, Valentina N. Gromoglasova, Vladimir S. Bushev, Jury A. Baskov, Violetta V. Kurkovskaya, Boris A. Gurkov, Ivan F. Evkin