Patents by Inventor Bradley T. Derrick

Bradley T. Derrick 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).

  • Centrifuge with automatic sampling and control and method thereof
    Patent number: 9283572
    Abstract: A centrifuge including a bowl, a bowl drive motor, a screw conveyor, a screw conveyor drive motor, a pump, a pump motor, a bowl VFD to drive the bowl drive motor, a conveyor VFD to drive the screw conveyor drive motor, a pump VFD to drive the pump drive motor, an analysis assembly and a computer electrically connected to the bowl VFD, the conveyor VFD, the pump VFD, and the analysis assembly. The analysis assembly is configured to automatically sample slurry pumped into the bowl and automatically transmit data, characterizing the slurry, to the computer. The computer is configured to calculate control schemes for the bowl VFD, the conveyor VFD, and the pump VFD using the data and, transmit control signals to the bowl VFD, the conveyor VFD and the pump VFD to operate the bowl VFD, the conveyor VFD and the pump VFD according to the control schemes.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: March 15, 2016
    Assignee: Derrick Corporation
    Inventors: Bradley T. Derrick, Michael J. Schwec
  • CENTRIFUGE WITH AUTOMATIC SAMPLING AND CONTROL AND METHOD THEREOF
    Publication number: 20150072850
    Abstract: A centrifuge including a bowl, a bowl drive motor, a screw conveyor, a screw conveyor drive motor, a pump, a pump motor, a bowl VFD to drive the bowl drive motor, a conveyor VFD to drive the screw conveyor drive motor, a pump VFD to drive the pump drive motor, an analysis assembly and a computer electrically connected to the bowl VFD, the conveyor VFD, the pump VFD, and the analysis assembly. The analysis assembly is configured to automatically sample slurry pumped into the bowl and automatically transmit data, characterizing the slurry, to the computer. The computer is configured to calculate control schemes for the bowl VFD, the conveyor VFD, and the pump VFD using the data and, transmit control signals to the bowl VFD, the conveyor VFD and the pump VFD to operate the bowl VFD, the conveyor VFD and the pump VFD according to the control schemes.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Bradley T. Derrick, Michael J. Schwec