Patents by Inventor L. Marc Dufour

L. Marc Dufour 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).

  • Adaptive welding control vision head
    Patent number: 4859829
    Abstract: An adaptive welding control vision head with a metal enclosure for attachment to a welding head. The side of the enclosure facing the workpiece is angled away from the welding head, has two apertures and its external surface is coated with oil. Mounted inside the enclosure is a means of projecting a structural light pattern onto a workpiece and a means of monitoring the resulting scattered light. The inside of the enclosure is maintained at a positive air pressure to prevent welding fumes from entering and is cooled to prevent heat accumulation.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: August 22, 1989
    Assignee: Canadian Patents & Development Ltd.
    Inventor: L. Marc Dufour