Patents by Inventor Dave C. Janzen

Dave C. Janzen 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).

  • Crop feeding apparatus for rotating concave threshing mechanism
    Patent number: 5772503
    Abstract: A grain combine has a header, a header discharge port, a feederhouse for transporting the cut crops from the header housing into a rotating concave threshing system. The header, discharge port and feederhouse are separated into separate first and second discrete cut crop passageways extending from the header to the intake end of the concave.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: June 30, 1998
    Assignee: Caterpillar Inc.
    Inventors: Dave C. Janzen, Ronald L. Satzler, Edward E. Schmillen