Patents by Inventor Dean K. Bredeson

Dean K. Bredeson 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: 4124306
    Abstract: Apparatus for devolatilizing materials such as solvent containing polymers includes a cylindrical housing having inlet and discharge ends and a screw member rotatably mounted in the housing, operative to work material so as to release contained vaporizable substances from the material. An inlet fitting at the inlet end of the chamber is located opposite a part of the screw member. The housing includes a venting section extending therefrom at the inlet end and the screw member has a screw vent control section extending within the venting section, arranged to convey material toward the discharge end of the housing.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: November 7, 1978
    Assignee: The French Oil Mill Machinery Company
    Inventors: Dean K. Bredeson, Gregory C. Craig, William J. Gilius, Charles R. Johnson
  • Patent number: 3980013
    Abstract: An interrupted flight screw press is provided, especially in regions of heavier wear, with one or more longitudinal split worm bodies. The bodies have axially extending end flanges which hook underneath flanges of adjacent collars to hold the worm in place. One or both of the worm bodies are keyed or otherwise fastened to the shaft for driving. Relatively slight longitudinal movement of one or both adjacent collars will release the parts of the worm body for repair and/or replacement without disassembling the entire worm-collar-shaft assembly.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: September 14, 1976
    Assignee: The French Oil Mill Machinery Company
    Inventor: Dean K. Bredeson