Patents by Inventor Nils L. Eriksson

Nils L. Eriksson 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).

  • Method and apparatus for liquid treatment of pulp
    Patent number: 4921650
    Abstract: Fibre material is defibrated and dispersed in an air flow and introduced through an inlet (2) into a forming head (1). In the forming head (1) the inlet transforms to a single-curved convex surface (5), which leads all the way to an accept outlet (6). A screen (7) is located at adjustable distance from the curved surface (5) for dividing ingoing fibre/air flow into accept and reject. An outlet (10) for the reject is located behind the screen (7). At a distance of 10-150 mm from the accept outlet (6) a running air-pervious support (27) is located, on which the web precipitates.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: May 1, 1990
    Assignee: Sunds Defibrator Aktiebolag
    Inventors: Kjell G. Eriksson, Bo R. Ek, Stig G. Wallin, Nils L. Eriksson