Patents by Inventor Donald A. Egging

Donald A. Egging 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).

  • Universal grinder with reciprocal feeder
    Patent number: 5205496
    Abstract: A hammer mill apparatus for comminuting materials such as wood, branches, twigs, leaves, grasses, hay, and the like, features a reciprocating batch feeder for feeding the materials to be comminuted into a rotary grinder. Adjustable and spring biased feed drum and metering roller meters the material into the hammer mill. The positions of a series of adjustable curved grinding teeth changes the sizes of the comminuted particles.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: April 27, 1993
    Assignee: O.D.E. Investments Corporation
    Inventors: Ralph T. O'Donnell, Donald A. Egging, James G. Nickels, William A. Eddy