Patents by Inventor Karl O. Pettersson

Karl O. Pettersson 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).

  • Chain saw guide bar with liquid spray device
    Patent number: 5426854
    Abstract: A chain saw guide bar allowing spraying of the cut surface of a stump with liquid, is made from three joined plates with a spraying device comprising one or more supply channels provided as cutouts in the central plate. A plurality of spraying holes are provided in one or both side plates. The spraying holes are offset towards the guide bar edge so far that less than the entire area of spraying hole area overlaps the edge of the supply channel.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: June 27, 1995
    Assignee: Sandvik AB
    Inventors: Arvo Leini, Karl O. Pettersson, Per-Olof Lofgren, Staffan Lindberg