Patents by Inventor Barry Kenneth Johnston

Barry Kenneth Johnston 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).

  • Apparatus for electrodewatering
    Patent number: 6871744
    Abstract: A solid-liquid mixture is electro-dewatered by apparatus having a conveyor belt for receiving an electric charge and having the mixture deposited thereon and an element above the conveyor belt receiving an opposite electric charge with the conveyor belt an element cooperating to apply a compressive force to the mixture and characterised by the conveyor belt including discrete electrically conducted segments which are permeable to the liquid. The upper element is preferably in the form of a rotary drum or second conveyor belt but it can be in the form of a pressure plate.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: March 29, 2005
    Assignee: CRC For Waste Management & Pollution Control Limited
    Inventors: Sarah A Miller, Barry Kenneth Johnston, Christopher Veal
  • Apparatus for electrodewatering
    Publication number: 20030150789
    Abstract: A solid-liquid mixture is electro-dewatered by apparatus having a conveyor belt for receiving an electric charge and having the mixture deposited thereon and an element above the conveyor belt receiving an opposite electric charge with the conveyor belt an element cooperating to apply a compressive force to the mixture and characterised by the conveyor belt including discrete electrically conducted segments which are permeable to the liquid. The upper element is preferably in the form of a rotary drum or second conveyor belt but it can be in the form of a pressure plate.
    Type: Application
    Filed: April 10, 2003
    Publication date: August 14, 2003
    Inventors: Sarah A Miller, Barry Kenneth Johnston, Christopher Veal
  • Apparatus for the dewatering of coal and mineral slurries
    Patent number: 5956858
    Abstract: Coal or other mineral slurry is dewatered by establishing a bed of the slurry and injecting a gas stream such as air into the bed to establish turbulent flow to strip moisture. This slurry may use particles in the range 0.5 mm to 30 mm with air injected at about 10 m/sec, and suitable novel apparatus includes a centrifuge or a vibratory conveyor with a closed tunnel and transverse air flow for stripping moisture.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: September 28, 1999
    Assignee: Commonwealth Scientific and Industrial Research
    Inventors: Christopher John Veal, Stuart K Nicol, Barry Kenneth Johnston
  • Process for the dewatering of coal and mineral slurries
    Patent number: 5771601
    Abstract: Coal or other mineral slurry is dewatered by establishing a bed of the slurry and injecting a gas stream such as air into the bed to establish turbulent flow to strip moisture. This slurry may use particles in the range 0.5 mm to 30 mm with air injected at about 10 m/sec, and suitable novel apparatus includes a centrifuge or a vibratory conveyor with a closed tunnel and transverse air flow for stripping moisture.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: June 30, 1998
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Christopher John Veal, Stuart K. Nicol, Barry Kenneth Johnston