Patents by Inventor Richard Trevor Gears

Richard Trevor Gears 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).

  • Method and apparatus for stall detection
    Patent number: 8040091
    Abstract: Stall detection apparatus for an electric motor controller has an input for receiving a drive error flag indicating if the controller is unable to achieve the required motor velocity and an input for receiving a signal in order to measure, directly or indirectly, the actual motor velocity. The actual motor velocity is determined in order to indicate whether the motor is stationary and, only if so, a stall signal is outputted in order to indicate that said motor has stalled.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 18, 2011
    Assignee: PG Drives Technology Ltd.
    Inventor: Richard Trevor Gears
  • Method and Apparatus for Stall Detection
    Publication number: 20090211822
    Abstract: Stall detection apparatus for an electric motor controller has an input for receiving a drive error flag indicating if the controller is unable to achieve the required motor velocity and an input for receiving a signal in order to measure, directly or indirectly, the actual motor velocity. The actual motor velocity is determined in order to indicate whether the motor is stationary and, only if so, a stall signal is outputted in order to indicate that said motor has stalled.
    Type: Application
    Filed: December 19, 2008
    Publication date: August 27, 2009
    Applicant: PG DRIVES TECHNOLOGY LTD.
    Inventor: Richard Trevor Gears