Patents by Inventor David Arthur Larson

David Arthur Larson 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: 6050344
    Abstract: A rotary garden tool has cutting blades for generally horizontal cutting generally disposed in a closed loop configuration sharpened on both sides to cut while rotating in either a clockwise of counterclockwise direction. Flexible tines are designed to bend outwardly away from the cutting blades during rotation, thus creating a trapping space between the blades and tines. The tool also has a forked assembly generally central of the cutting blades and flexible tines to stabilize the tool while in use and can till the soil as well. There is also provided a shaft central of the blades, tines, and forked assembly to attach the remainder of the tool to a rotation system such as a hand crank or electric drill.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: April 18, 2000
    Inventors: David Arthur Larson, Roger James Morrell