Patents by Inventor Andrew Paul Charlton

Andrew Paul Charlton 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 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