Patents by Inventor Brian Ward Gulayets

Brian Ward Gulayets 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).

  • Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors
    Patent number: 6812656
    Abstract: A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive-pulses, which operates the IGBT switching devices to sequentially provide pulses to each motor.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: November 2, 2004
    Assignee: Railpower Technologies Corp.
    Inventors: Frank Wegner Donnelly, Brian Ward Gulayets
  • Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors
    Publication number: 20030160586
    Abstract: A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive-pulses, which operates the IGBT switching devices to sequentially provide pulses to each motor.
    Type: Application
    Filed: February 27, 2002
    Publication date: August 28, 2003
    Inventors: Frank Wegner Donnelly, Brian Ward Gulayets