Patents by Inventor Cecil C. Farnsworth

Cecil C. Farnsworth 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).

  • Soil separating systems
    Patent number: 7841422
    Abstract: A towable apparatus adapted for the separation of rock, stones, or debris from topsoil, having a stationary, non-vibrating sifting screen. A hydraulically powered conveyor belt with paddles pushes the soil across the sifting screen. The system provides features to assist prevention of machine jamming by large debris. A method of use is also disclosed.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: November 30, 2010
    Inventors: Joseph J. Chavez, Cecil C. Farnsworth