Patents by Inventor Frank A. Togstad

Frank A. Togstad 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: 4356910
    Abstract: An extensible grain auger includes a casing defined by co-axial telescoping sections, with an inlet at one end and an outlet at the other end of the casing, a pair of inter-connected auger tubes rotatably mounted in the casing, the flight of one tube being threadable into the auger flight of the other tube; and an extension tube and screw assembly rotatably mounted in the auger tubes, the extension tube extending out of the casing at one end and the screw being connected to a nut in the tube and to the other end of the casing, so that one casing section can be extended and retracted relative to the other casing section.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: November 2, 1982
    Inventor: Frank A. Togstad