Patents by Inventor Cornelius de Swardt

Cornelius de Swardt 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).

  • Sealing devices for center flow perforated plate filter
    Publication number: 20060070858
    Abstract: A waste water filter has a pair of driven chains carried by the frame and extending in a loop. Screen segments are located between the chains, each of the segments having apertures for the passage of fluid and a shelf portion to lift debris. End plates are secured to opposite ends of each of the segments and seal plates are located between the end plates and the chains. Fasteners secure the end plates and seal plates to the chains. Each of the segments has a first edge that overlaps an upstream side of a second edge of an adjacent segment.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 6, 2006
    Inventors: Cornelius de Swardt, Jeremy Colvin, Gerald Seidl