Patents by Inventor Donald Edwin Irving

Donald Edwin Irving 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).

  • Retractable snow plow wing assembly
    Patent number: 6249992
    Abstract: A side wing plow assembly is provided for use on a vehicle, e.g. a grader. It includes an elongated blade, an articulated forward connector assembly for connecting the inner end of the blade to the vehicle and a rear connector assembly for connecting the outer end of the blade to the vehicle rearwardly of the vehicle cab. Hydraulic cylinders tilt the blade and raise and lower the blade and a telescopic arm adjusts the angle of the blade. A shock absorbing linkage also permits the blade to bounce over an obstruction to avoid damage.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: June 26, 2001
    Assignee: Capital I Industries Inc.
    Inventors: Donald Edwin Irving, Colin Edwin Irving, Kenneth Lawrence Furber, James Randolph Nickel