Patents by Inventor Knut Haugen

Knut Haugen 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).

  • Arrangement in a separator
    Patent number: 6350375
    Abstract: The present invention relates to an arrangement in a separator, especially a gravity separator (1), to which separator is supplied with well fluid containing sand, and to avoid sand settling on walls of pipes or separators; it is according to the invention, suggested that the separator (1) comprises a conical part (5), which passes into a sloping or mainly vertical arranged bottom pipe (7), for, so to speak, continuous bottom outlet of sand (6), which is suspended in a fluid, mainly sand carrying water.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: February 26, 2002
    Assignee: ABB Research Ltd.
    Inventors: Bjorn Oyvind Bringedal, Knut Haugen