Patents by Inventor Harry R. Carlsen

Harry R. Carlsen 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).

  • Rotary blade for cutting grass and the like
    Patent number: 5768867
    Abstract: A rotary blade including a disc and a ring secured to the disc, wherein the ring has cutting filaments that extend radially outward past the outer edge of the disc. As the disc is rotated the filaments are adapted for cutting grass and the like. Projections extending from the disc create an air turbulence that both lifts the vegetation to be cut and swirls the clippings to further mulch the clippings.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: June 23, 1998
    Inventor: Harry R. Carlsen