Patents by Inventor Hans Rosdahl

Hans Rosdahl 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: 5845405
    Abstract: A cutting tool for use with a brush cutter, trimmer or like device (1) for cutting thicket, grass and like vegetation, wherein the device includes a rotary shaft (3) for receiving a cutting tool which includes a rotatable center disc (6) which can be fitted to the tool and which includes cutting blades (9) having a cutting edge (10) along the front side of the blade as seen in the direction of rotation, wherein each individual cutting blade (9) is bent down through a first angle (v) such that the rear edge of the cutting blade (9) will be located closer to the ground than the edge-provided front side (10) of the blade when the center disc is held parallel with the ground, so that as the centre disc (6) rotates air will be pressed down towards the ground and therewith causes the tool to hover or lift slightly above the ground surface.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: December 8, 1998
    Assignee: Swing Cut AB
    Inventor: Hans Rosdahl