Patents by Inventor Boyd R. Yale

Boyd R. Yale 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).

  • Shuttle car
    Patent number: 4291777
    Abstract: A mine-haulage vehicle is provided which consists of a first elongated body section providing a pair of steering wheels and coupled in articulating relation to an intermediate body section which is coupled in articulating relation to a third elongated body section providing a second pair of steering wheels. A first pair of driven wheels is provided by the intermediate body section with a common axis of rotation at or proximate to the first point of articulation. A second pair of driven wheels is provided by the third elongated body section with a common axis of rotation at or proximate to the second point of articulation.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: September 29, 1981
    Assignee: Island Creek Coal Co.
    Inventor: Boyd R. Yale