Patents by Inventor Bo Knut Mannstrom

Bo Knut Mannstrom 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).

  • System for feeding a double disc refiner
    Patent number: 4059237
    Abstract: A double disc refiner for wood products solves the problems caused by steam generation in the refining space between the feed end disc and another disc. This problem is solved by the use of a separate steam removal channel connected to an inlet passage closely adjacent the feed end disc and at a location between the feed end disc and a means for feeding wood materials into the inlet passage at one end thereof. The means for feeding wood materials feeds the materials through the inlet passage and thereafter into the refining space through openings in the feed end disc.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: November 22, 1977
    Assignee: Oy Keskuslaboratorio - Centrallaboratorium, Ab
    Inventor: Bo Knut Mannstrom