Patents by Inventor Maynard A. Teppo

Maynard A. Teppo 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).

  • Rotary clay material refiner
    Patent number: 5868256
    Abstract: An apparatus for refining clay material having a horizontally oriented rotating drum into which clay material and water are fed. The clay material and water form a slurry which is agitated by lifters within the drum. A series of adjustable lifters within the drum refine the slurry by lifting aggregates and rocks out of the slurry and discharging them out of the refiner. The refined slurry exits the drum through an opening in the drum. The refined slurry is then taken away from the drum for further processing.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: February 9, 1999
    Assignee: AMCOL International Corporation
    Inventor: Maynard A. Teppo