Patents by Inventor Truls Harald Paulsen

Truls Harald Paulsen 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).

  • Centrifugal pump device
    Patent number: 5993151
    Abstract: The invention relates to a centrifugal pump device, comprising a pump casing (1) having an inlet (2) and an outlet (3), an impeller device inside the casing (1) having one or more pump stages (5-7) with a common rotary shaft (4), and a non-return valve (8) between inlet (2) and outlet (3). The device is characterized in that the non-return valve (8) is provided on the discharge side of at least a first pump stage (5).
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: November 30, 1999
    Assignee: Kvaerner Ships Equipment A.S.
    Inventors: Truls Harald Paulsen, Fredrik Jahn Lebesby