Patents by Inventor Richard L. Duncum

Richard L. Duncum 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).

  • Filter bypass monitoring system
    Patent number: 7152745
    Abstract: A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into sealing relationship by activation of the tube (18). The tube (18) being tested prior to and during sealing. Fluid that bypasses the seal are collected for rycycle.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 26, 2006
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Brian W. Pahl, Frank M. Croket, Richard L. Duncum
  • Filter bypass monitoring system
    Publication number: 20040035767
    Abstract: A method and apparatus for sealing the opposed side edges of a fluid treating belt filter (3) by employing an inflatable elastic tube (18). Opposed sealing surfaces are spaced apart from each other defining a gap there between which can be brought into sealing relationship by activation of the tube (18). The tube (18) being tested prior to and during sealing. Fluid that bypasses the seal are collected for rycycle.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 26, 2004
    Inventors: Brian W. Pahl, Frank M. Croket, Richard L. Duncum