Patents by Inventor James E. Druffel

James E. Druffel 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).

  • Chaff spreading attachment for harvesters
    Patent number: 4137923
    Abstract: A chaff spreading attachment that is mountable adjacent the chaff discharge of a harvester, wherein the chaff discharge is located elevationally below and forward of a straw or stalk discharge. The chaff spreading attachment is utilized to create transverse air currents to spread the chaff over the width of the swath taken by the harvester. The attachment includes two oppositely facing fans that are rotated in the same direction about a transverse axis by mechanism connected to a power source provided by the harvester.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: February 6, 1979
    Inventors: Donald G. Druffel, James E. Druffel