Patents by Inventor Anthony J. Crisp

Anthony J. Crisp 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).

  • Heating and/or cooling of vessels
    Patent number: 5503220
    Abstract: An apparatus for heating or cooling solid suspension slurry. The apparatus comprises a vessel (1) for containing the slurry and a draft means contained within a draft section of a draft tube (2) to circulate and maintain the suspension. Extending substantially the length of cylindrical section (26) of the draft tube below the draft means are plate heat exchangers (7, 21, 23, 25, 27, 29) connected in series. The plate heat exchangers may be recessed into the wall of the draft tube so as not to increase the pressure drop through the draft tube or may be arranged in pairs along the axis of the draft tube so that the proportion of the cross-sectional area of the draft tube occupied by the heat exchangers is minimized.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: April 2, 1996
    Assignee: Comalco Aluminium Limited
    Inventors: David G. Wood, Anthony J. Crisp, Arthur J. Bursle