Patents by Inventor Gervais Dufour

Gervais 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).

  • Mid-chassis plow or scrapper angling support
    Patent number: 6123156
    Abstract: A mid-chassis, underbody plow or scrapper blade is mounted under a vehicle chassis to permit the outer ends of the blade to move vertically. Pneumatic pressure actuators mounted on either side of the center line of the vehicle apply pressure to the respective ends of the blade to control the scrapping action.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: September 26, 2000
    Assignee: 177197 Canada Ltee
    Inventors: Martin Dufour, Gervais Dufour