Patents by Inventor Reima Karke

Reima Karke 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).

  • Drum washer
    Patent number: 5421176
    Abstract: The invention concerns a drum washer. The washer has two plates (14; 18) located after each other in parallel with the drum, and the pulp to be washed is conducted between these plates. Between the plates there is a gap (22) closed by a flap valve (25) by way of which gap washing liquid is conducted through the mat. The washer is especially suitable for washing cellulose pulp.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: June 6, 1995
    Assignee: Sunds Defibrator Pori Oy
    Inventors: Alpo Ojala, Seppo Rosnell, Reima Karke