Patents Assigned to Sigurd Hakansson
  • Device for a chain saw for the slitting of bark layers of a log
    Patent number: 4615121
    Abstract: A device is disclosed to make slits through the bark of a log with a chain saw. The chain saw has a blade with a chain which runs over its extreme free end which is preferably semicircular in shape. Rotatable guide rollers are mounted on both sides of the extreme end of the blade and are preferably coaxial with the semicircular end. The lateral surfaces of the guide rollers face each other and guide rollers in operation hold the chain of the chain saw in contact with a log to be cut for cutting slits of a given depth through its bark.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 7, 1986
    Assignees: Sigurd Hakansson, Ergonomen HB, Arne Lindahl
    Inventor: Sigurd Hakansson