Patents by Inventor Olav A. Kristensen

Olav A. Kristensen 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).

  • Ejection nozzle for high-pressure cleaning units
    Patent number: 4886213
    Abstract: An ejection nozzle for high-pressure cleaning units and having a narrow nozzle opening for high-pressure ejection and having one or more ducts openable through such a large area that low-pressure discharge of a spraying liquid can occur through an end wall of a slidable cylinder jacket portion and having a comparatively wide low-pressure nozzle opening, essentially coaxial with the high-pressure nozzle opening.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: December 12, 1989
    Assignee: K.E.W. Industri A/S
    Inventor: Olav A. Kristensen