Patents by Inventor Paul Knauff

Paul Knauff 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).

  • Anchor for an underdrain block
    Patent number: 6110366
    Abstract: A grout-gripping anchor for an underdrain block to be grouted to a filter floor is disclosed. Underdrain blocks have ribs extending outwardly from the exterior walls. The anchor is formed at the distant end of ribs positioned on the bottom exterior wall. The end of the rib widens to form one or more flanges or ledges so that grout covers the ledge when the underdrain block is grouted onto the filter floor. The anchor can be comprised of various shapes, including wedge-shape, rectangular shape or donut shaped.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: August 29, 2000
    Assignee: Tetra Process Technologies
    Inventors: Gary Hunkele, Paul Knauff