Patents by Inventor Dale L. Churcher

Dale L. Churcher 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).

  • Centrifuge apparatus and method of operating a centrifuge
    Patent number: 4432748
    Abstract: This invention relates to centrifuges and more particularly to a centrifuge having a separation chamber surface profile to provide a uniform or controlled flow of separated solids and the method of operating a centrifuge to provide such flow.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: February 21, 1984
    Assignee: Joy Manufacturing Company
    Inventors: John Novoselac, Dale L. Churcher
  • Centrifuge apparatus
    Patent number: 4392846
    Abstract: A centrifuge apparatus having an external movable member to close the outer end of a fixed width peripheral discharge opening which may be partially deformable to effect such closing.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: July 12, 1983
    Assignee: Joy Manufacturing Company
    Inventors: John Novoselac, Dale L. Churcher