Patents by Inventor Clifton T. Williams

Clifton T. Williams 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).

  • Concrete grindings reclamation system
    Patent number: 6582610
    Abstract: A method for treating a fluid slurry with concrete grindings to separate constituents thereof, the constituents including water, sand and cement particles, the method including removing solids (e.g. large concrete fragments, rock, etc.) from fluid slurry with vibratory separation apparatus, the vibratory separation apparatus having screen apparatus for separating materials, the vibratory separation apparatus producing wet solids flowing off the top of the screen apparatus and a fluid stream containing water and cement particles, the fluid stream discharged beneath the screen apparatus, feeding at least a portion of the fluid stream to centrifuge apparatus, and separating cement particles from the fluid stream with the centrifuge apparatus and producing a stream of water with the centrifuge apparatus; and re-usable cement particles recovered using such a method.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: June 24, 2003
    Assignee: Varco I/P, Inc.
    Inventors: Clifton T. Williams, Barry Lynn Sorteberg
  • Concrete grindings reclamation system
    Publication number: 20030006194
    Abstract: A method for treating a fluid slurry with concrete grindings to separate constituents thereof, the constituents including water, sand and cement particles, the method including removing solids (e.g. large concrete fragments, rock, etc.) from fluid slurry with vibratory separation apparatus, the vibratory separation apparatus having screen apparatus for separating materials, the vibratory separation apparatus producing wet solids flowing off the top of the screen apparatus and a fluid stream containing water and cement particles, the fluid stream discharged beneath the screen apparatus, feeding at least a portion of the fluid stream to centrifuge apparatus, and separating cement particles from the fluid stream with the centrifuge apparatus and producing a stream of water with the centrifuge apparatus; and re-usable cement particles recovered using such a method.
    Type: Application
    Filed: June 27, 2001
    Publication date: January 9, 2003
    Inventors: Clifton T. Williams, Barry Lynn Sorteberg