Patents by Inventor Geoffrey C. Grimwood

Geoffrey C. Grimwood 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).

  • Decanting centrifuges with improved compression
    Patent number: 5584791
    Abstract: A decanting type centrifuge comprising a bowl which rotates about a horizontal or vertical axis and contains a helical screw conveyor for separating a slurry fed to the bowl into its constituent solids and liquid, the scroll being arranged to rotate at a differential speed within the bowl and wherein at least some of the flights of the scroll conveyor are inclined backwards relative to the solids discharge end of the bowl.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: December 17, 1996
    Assignee: Thomas Broadbent & Sons Ltd.
    Inventors: Geoffrey L. Grimwood, Geoffrey C. Grimwood
  • Particle separation and drying apparatus
    Patent number: 5460717
    Abstract: An apparatus which performs solids particles separation from a liquids/solids slurry, and subsequent drying of such solids particles, within a single enclosure. Further processing functions, such as reslurry washing, plug washing, crystal growth and other reactions, can also be carried out within that single enclosure.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: October 24, 1995
    Assignee: Thomas Broadbent & Sons Limited
    Inventors: Geoffrey L. Grimwood, Geoffrey C. Grimwood