Patents by Inventor Enar V. Hellberg

Enar V. Hellberg 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).

  • Defibrator
    Patent number: 4382559
    Abstract: The invention relates to a defibrator comprising at least one rotary cylindrical drum provided on its inner surface with longitudinal deflectors, driven in rotation and axially supplied with material which is to be defibrated. On the inside, the defibrator comprises a rotor consisting of a shaft coaxial with the cylindrical drum, and longitudinal blades branching off radially from the shaft and having ends which are curved in the direction of rotation, capable of receiving the material which is to be defibrated and of projecting it on to the inner wall of the drum.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: May 10, 1983
    Assignee: Sunds Defibrator Aktiebolag
    Inventor: Enar V. Hellberg
  • Apparatus for eliminating by flotation impurities in the form of solid particles contained in a liquid
    Patent number: 4186094
    Abstract: Apparatus for eliminating impurities by flotation of such impurities wherein a stream of air is injected into a flow of liquid in a flotation cell so as to form distributed air bubbles fixed on the impurities, which air bubbles rise to the surface for their discharge as foam.
    Type: Grant
    Filed: September 20, 1977
    Date of Patent: January 29, 1980
    Assignee: Swemac S.A.
    Inventor: Enar V. Hellberg