Patents by Inventor Hannes Rajala

Hannes Rajala 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).

  • Dewatering press
    Patent number: 5875707
    Abstract: A press for removing water from masses containing materials of organic origin. The press has a compression chamber (2) with a perforated mantle. The discharge end of the compression chamber contains a piston part (3), which is reciprocable in relation to the compression chamber and movable in and out and through which (6) the mass discharges from the compression chamber. The invention is suitable for use, for example, for drying sludges resulting from sewage treatment.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: March 2, 1999
    Assignee: Oy SNE Environment Engineering Ltd.
    Inventor: Hannes Rajala