Patents by Inventor Mathieu J. Demers

Mathieu J. Demers 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).

  • Stiffness compensation in opto-mechanical mechanisms
    Patent number: 8542423
    Abstract: An optical scanning or positioning mechanism has a head on which optical components are mounted and an actuator coupled to the head to cause the head to move when the actuator is actuated. There are one or more sets of flexure bearings mounted in the mechanism. The flexure bearings have a restoring torque when moved from a rest position. The bearings are coupled to the head to allow the head to move when actuated by the actuator. One or more magnets are mounted in the mechanism in a location other than in the actuator to compensate for the flexure bearings restoring torque.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: September 24, 2013
    Assignee: ABB Inc.
    Inventors: Mathieu J. Demers, Jean-Thomas Landry, Henry L. Buijs
  • STIFFNESS COMPENSATION IN OPTO-MECHANICAL MECHANISMS
    Publication number: 20110038021
    Abstract: An optical scanning or positioning mechanism has a head on which optical components are mounted and an actuator coupled to the head to cause the head to move when the actuator is actuated. There are one or more sets of flexure bearings mounted in the mechanism. The flexure bearings have a restoring torque when moved from a rest position. The bearings are coupled to the head to allow the head to move when actuated by the actuator. One or more magnets are mounted in the mechanism in a location other than in the actuator to compensate for the flexure bearings restoring torque.
    Type: Application
    Filed: January 8, 2009
    Publication date: February 17, 2011
    Inventors: Mathieu J. Demers, James T. Landry, Henry L. Buijs