Patents by Inventor Thomas Cliche

Thomas Cliche 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).

  • Anti-rollback system for an electric motor and method therefor
    Patent number: 6731084
    Abstract: The present method and system allows minimization of a rollback effect when an electric vehicle, such as a wheelchair, brakes on a slope. The system comprises secondary brake, a controller, and a monitor that allows to apply both a control voltage and the secondary brakes according to an appropriate sequence to provide stops and starts with a minimized rollback effect. An updated armature resistance value is advantageously used to take into account evolutive conditions of the vehicle.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: May 4, 2004
    Assignee: Liber-T Medtech Inc.
    Inventors: Eric Gagnon, Thomas Cliche
  • Anti-rollback system for an electric motor and method therefor
    Publication number: 20030117096
    Abstract: The present method and system allows minimization of a rollback effect when an electric vehicle, such as a wheelchair, brakes on a slope. The system comprises secondary brake, a controller, and a monitor that allows to apply both a control voltage and the secondary brakes according to an appropriate sequence to provide stops and starts with a minimized rollback effect. An updated armature resistance value is advantageously used to take into account evolutive conditions of the vehicle.
    Type: Application
    Filed: October 15, 2002
    Publication date: June 26, 2003
    Applicant: Liber-T Medtech Inc.
    Inventors: Eric Gagnon, Thomas Cliche