Patents by Inventor Karl Olov Pettersson

Karl Olov 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).

  • Replaceable nose member for chain saw guide bars
    Patent number: 6612037
    Abstract: A chainsaw guide bar includes a bar body and a nose member removably attached to the bar body by an elastic snap-in coupling, eliminating the need for separate fastening elements. The snap-in coupling includes dimples formed in tongues of the nose member, the dimples being received in holes formed in a web of the bar body. The dimpled portions of the tongues are elastically flexible in a thickness direction of the guide bar to enable the nose member to be inserted or removed.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 2, 2003
    Assignee: Blount, Inc.
    Inventors: Gabriel Carro, Karl Erik Forsberg, Karl Olov Pettersson, Larry Flowers, Paul E. Wade
  • Chainsaw guide bar having liquid-conducting channels
    Patent number: 6397475
    Abstract: A chainsaw guide bar has tubes to convey liquid such as lubricants, fungicides, paints, etc. The tubes, made of soft deformable metal, are placed in respective grooves formed in the guide bar and are then deformed. The grooves include an undercut side, whereby a portion of the deformed tube is held in its groove by an interference bit defined by the undercut side and a portion of the deformed tube situated behind the undercut side.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: June 4, 2002
    Assignee: Blount, Inc.
    Inventors: Karl-Olov Pettersson, Karl-Erik Forsberg
  • Guide bar including stump treatment
    Patent number: 6397452
    Abstract: A guide bar for the treatment of tree stumps. A channel formed in the bar length is fitted with a soft metal tube. The tube is pierced with a piercing tool that produces hole forms leaving a center opening inset toward the tube center with flared sides that allow spreading of the liquid treatment directed from the tube interior to a stump surface while severing a tree. The opening may be varied in size to accommodate different pivotal speed rates of the hole form locations along the bar length.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: June 4, 2002
    Assignee: Blount, Inc.
    Inventors: Karl-Erik Frosberg, Karl-Olov Pettersson
  • Chain saw nose sprocket
    Patent number: 6317989
    Abstract: A nose sprocket for the saw chain of a chain saw includes radially projecting teeth, each tooth having leading and trailing edges. Each of those edges includes a straight inner portion and an outer portion that deviates from a radius of the sprocket by a greater amount than the inner portion. The teeth are long enough to enter a space formed between side links of the saw chain.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: November 20, 2001
    Assignee: Kapman AB
    Inventors: Karl Erik Forsberg, Karl Olov Pettersson, Gabriel Carro