Patents by Inventor Denis Johnson

Denis Johnson 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).

  • Spike roller for axial feeding or rotation of a log
    Patent number: 6481471
    Abstract: A roller for grasping a log for axial movement or rotation of a log, the roller including spike bar retainers fastened on the cylindrical surface of the roller. The spike bar retainers accept and retain replaceable spike bars, thus facilitating replacement of worn spikes, which may be replaced without removal of the roller. The spike bars formed of alloy steel feature an improved type of spike having planar side surfaces that converge to a pointed end. The improved spikes grip and hold logs at lower average pressures over an extended period of use than conventional conical spikes.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: November 19, 2002
    Inventors: Yvon Johnson, Denis Johnson
  • Spike roller for axial feeding or rotation of a log
    Patent number: 6453959
    Abstract: A roller for grasping a log for axial movement or rotation of a log, the roller including spike bars fastened on the cylindrical surface of the roller. The spike bars are formed of alloy steel feature an improved type of spike having planar side surfaces that converge to a pointed end. The improved spikes grip and hold logs at lower average pressures over an extended period of use than conventional conical spikes.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: September 24, 2002
    Assignee: Val D'Amour Fabrication Inc.
    Inventors: Yvon Johnson, Denis Johnson
  • Spike roller for axial feeding or rotation of a log
    Publication number: 20020062879
    Abstract: A roller for grasping a log for axial movement or rotation of a log, the roller including spike bars fastened on the cylindrical surface of the roller. The spike bars are formed of alloy steel feature an improved type of spike having planar side surfaces that converge to a pointed end. The improved spikes grip and hold logs at lower average pressures over an extended period of use than conventional conical spikes.
    Type: Application
    Filed: January 22, 2002
    Publication date: May 30, 2002
    Inventors: Yvon Johnson, Denis Johnson
  • Debarker arms and debarker tips for mounting on log barking machines
    Patent number: 5653274
    Abstract: A debarker arm for a debarking machine, comprised of a crescent shaped member, a debarker arm support, an outwardly forwardly extending flange, a debarker tip receptacle, and a debarker tip seated in said receptacle, the invention comprising said outwardly forwardly extending flange extending above and forwardly of said debarker tip in the direction of incoming logs.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: August 5, 1997
    Inventors: Denis Johnson, Yvon Johnson