Patents by Inventor Charles Arthur Willus

Charles Arthur Willus 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).

  • Nozzle type centrifugal machine with improved slurry pumping chambers
    Patent number: 4067494
    Abstract: A nozzle type centrifugal machine designed for two-fraction separation of feed slurry, wherein the rotor has a light fraction overflow at the top, while feed slurry as well as underflow return slurry from the nozzles are introduced into the rotor from below into respective feed accelerating pumping chambers, and wherein improvements in the pumping chambers results in reduced power requirement and in improved overall performance of the machine.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: January 10, 1978
    Assignee: Dorr-Oliver Incorporated
    Inventors: Charles Arthur Willus, Per Nyrop
  • Nozzle type centrifuge
    Patent number: 4005817
    Abstract: A nozzle type centrifugal machine with provision for light and heavy phase overflow delivery from top and bottom respectively of the rotor bowl, and equipped with control devices operable for correctively shifting the location of the interface within the limits of the centrifugal separating zone located within the area surrounded by a stack of separating discs.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: February 1, 1977
    Assignee: Dorr-Oliver Incorporated
    Inventors: Andrew Paul Charlton, Kenneth Dan Lewis, Charles Arthur Willus, Per Nyrop