Patents by Inventor Patrick T Mullins

Patrick T Mullins 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).

  • Blade height control system for a motorized grader
    Patent number: 6269885
    Abstract: The position of the blade of a motor grader is controlled to maintain a smoothly graded surface even when the grader's front wheels travel over undulating ungraded ground. This is accomplished by sensing the degree to which the grader frame pivots with respect to the rear wheels and employing the pivot angle to derive the resultant change in blade position. That change is used to operate a mechanism that produces movement of the blade relative to the earth thereby compensating for effects of the pivoting action.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: August 7, 2001
    Assignee: Husco International, Inc.
    Inventors: Dennis R. Barber, Patrick T Mullins