Patents by Inventor Gunnar Lindmark

Gunnar Lindmark 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).

  • Patent number: 4545413
    Abstract: Device for use in connection with wood chippers of the type comprising a rotary disc (15) whereof one face is fitted with substantially radially positioned knives (1) which are attached thereto by means of knife holders (2) incorporating a log guiding surface. To give a twisted form to one face of the knife holders (2) the latter are fabricated by surface grinding of the log guiding face while the knife holder (2) is clamped in a grinding fixture (20) in a state of torsion which, after removal from the grinding fixture, gives the desired twisted shape to the log guiding face. After removal from the grinding fixture (20) the knife holder (2) is clamped in a torsion-free state in the chipping disc (15).
    Type: Grant
    Filed: April 14, 1983
    Date of Patent: October 8, 1985
    Assignee: Aktiebolaget Iggesunds Bruk
    Inventors: Ake Sundberg, Gunnar Lindmark