Patents by Inventor Jon Barrie Chalmers

Jon Barrie Chalmers 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).

  • Timer circuit for a dual lane motor controller
    Patent number: 11349423
    Abstract: A timer circuit for use with a dual lane motor controller has two motor controllers, each motor controller generating PWM drive signals having a period defined by a respective timer of the timer circuit. The timer circuit comprises a first processing circuit associated with the first motor controller and comprising a first oscillator circuit, a first timer which outputs a first timer signal each time the oscillator circuit has completed a set integer number N of oscillations, and a second processing circuit associated with the second motor controller and comprising a second oscillator circuit.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 31, 2022
    Assignee: ZF AUTOMOTIVE UK LIMITED
    Inventors: Jon Barrie Chalmers, Paul Andrew Weaver
  • A TIMER CIRCUIT FOR A DUAL LANE MOTOR CONTROLLER
    Publication number: 20200280279
    Abstract: A timer circuit for use with a dual lane motor controller has two motor controllers, each motor controller generating PWM drive signals having a period defined by a respective timer of the timer circuit. The timer circuit comprises a first processing circuit associated with the first motor controller and comprising a first oscillator circuit, a first timer which outputs a first timer signal each time the oscillator circuit has completed a set integer number N of oscillations, and a second processing circuit associated with the second motor controller and comprising a second oscillator circuit.
    Type: Application
    Filed: September 18, 2018
    Publication date: September 3, 2020
    Inventors: Jon Barrie Chalmers, Paul Andrew Weaver