Patents by Inventor Alan S. Palmer

Alan S. Palmer 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).

  • Method and apparatus for reducing axial thrust in centrifugal pumps
    Patent number: 5320482
    Abstract: A control stator comprising a plurality of stationary vanes, ribs, or cavities is provided in a centrifugal pump having a shrouded impeller. The function of the control stator is to slow the swirl of fluid in the cavity between the casing and the impeller front shroud and thereby provide a very cost effective solution to the problem of excess axial thrust. The control stator is a simple, inexpensive non-rotating part that can be affixed in an existing space in the pump casing between the casing wall and the front shroud of the impeller.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: June 14, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alan S. Palmer, John W. Henry, IV, John P. Kerr