Patents by Inventor John Frater

John Frater 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).

  • Low-wear slurry pump
    Patent number: 9657739
    Abstract: A centrifugal pump for a slurry combines design changes with respect to conventional configurations that produce quasi-laminar flow and materially extend the life of the casing. The cutwater clearance of the casing is increased to a range of 0.20 to 0.25 times the diameter of the impeller. The casing includes a redesigned removable annular liner with a diameter increased to at least 1.15 times the diameter of the impeller. The pump preferably also has an axially adjustable wear ring with a diameter increased such that it extends by at least 10% over the diameter of the area of interface between the wear ring and the impeller.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 23, 2017
    Assignee: FLSMIDTH A/S
    Inventors: John Frater, Ricky McGahee
  • LOW-WEAR SLURRY PUMP
    Publication number: 20140037440
    Abstract: A centrifugal pump for a slurry combines design changes with respect to conventional configurations that produce quasi-laminar flow and materially extend the life of the casing. The cutwater clearance of the casing is increased to a range of 0.20 to 0.25 times the diameter of the impeller. The casing includes a redesigned removable annular liner with a diameter increased to at least 1.15 times the diameter of the impeller. The pump preferably also has an axially adjustable wear ring with a diameter increased such that it extends by at least 10% over the diameter of the area of interface between the wear ring and the impeller.
    Type: Application
    Filed: April 13, 2012
    Publication date: February 6, 2014
    Applicant: FLSMIDTH A/S
    Inventors: John Frater, Ricky McGahee