Patents by Inventor Otto R. Letzig

Otto R. Letzig 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: 4220434
    Abstract: A hopper for use with grain elevators is the subject of the present invention. Two components are separable but are held together by a friction coupling. The first component comprises a trough which partially encloses the auger and receives the second component which presents a hopper for receiving grain. The holding area of the hopper empties into an opening which is in alignment with the open area of the auger for feeding grain to the latter. A pair of side flaps extend from the holding area down into the trough to present a coupling to hold the two components together.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: September 2, 1980
    Inventor: Otto R. Letzig