Patents by Inventor Viljo S. Tulkki

Viljo S. Tulkki 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).

  • Decanting device for separation of phases of different densities
    Patent number: 4689158
    Abstract: A decanting vessel for separation of liquid phases of different densities. The decanter vessel is provided with several conically-shaped separation levels disposed one on top of the other and provided with openings connecting the passages, alternately at the outer periphery and at the center of the separation levels. The liquid phases are thereby caused to flow from one passage to the next, consecutively, in a generally serpentine path. Pipes are disposed in the uppermost portion of each of the separation levels to carry the lighter phase to the top of the vessel.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: August 25, 1987
    Assignee: A. Ahlstrom Corp.
    Inventor: Viljo S. Tulkki