Patents by Inventor Gerald F. Kobiske

Gerald F. Kobiske 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).

  • Manure pump having agitator piston
    Patent number: 4028017
    Abstract: A hopper having a bottom opening into an open topped chamber portion of a housing which defines a discharge passageway leading from the chamber to a discharge end portion. A piston is mounted for reciprocatory movements in the chamber portion and passageway. The piston having a pumping surface normal to the direction of its movement and facing the discharge end portion of the passageway. The piston has an opposite surface which slopes angularly upwardly toward the pumping surface. A check valve is disposed in the passageway at the discharge end portion of the passageway.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: June 7, 1977
    Assignee: Kobiske Industries, Inc.
    Inventor: Gerald F. Kobiske