Patents by Inventor Steinar F. Jacobsen

Steinar F. Jacobsen 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).

  • Screw presses
    Patent number: 4565124
    Abstract: Screw press with one or more screws having a sieve surface. The screw is fabricated to have a reinforced construction by way of a rigid main stem portion disposed radially inwards of a rigid sieve-forming surface portion and reinforcing ribs disposed between these portions. Screw threads of the screw are secured directly to the sieve-forming surface portion while a drainage duct for draining fluid from the latter portion is formed between this portion and the main stem portion.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: January 21, 1986
    Assignee: Stord Bartz A/S
    Inventors: Thomas Stautland, Steinar F. Jacobsen