Patents by Inventor Bruce Knobbe

Bruce Knobbe 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).

  • Gate valve for high-density slurries, and a valve body assembly, and a solids-containing wall lining means therefor
    Patent number: 6745999
    Abstract: Flexible, plastic, solids-containing liners or panels are disposed in the chamber of the valve body for contacting, interfacing engagement with the gate. Accordingly, the panels and gate substantially fully occupy the chamber, and prevent an entry of slurry solids thereinto. The panels are rubber-backed to insure that the panels are pressed, sealingly, against the flat faces of the gate, and are arranged in parallel with the chamber walls.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: June 8, 2004
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Richard L. Heinecke, Bruce Knobbe