Patents by Inventor James B. Davidson

James B. Davidson 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).

  • Method and apparatus for controlling motorgrader cross slope cut
    Patent number: 4926948
    Abstract: A method and apparatus are disclosed for controlling the cross slope angle cut by the blade of an articulated frame motorgrader operated in the crabbed steering mode wherein the articulation angle of the motorgrader frame is sensed and used to calculate the blade angle relative to horizontal required to maintain a desired cross slope angle. The blade angle is sensed and controlled such that the sensed blade angle is maintained substantially equal to the calculated blade angle.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: May 22, 1990
    Assignee: Spectra Physics, Inc.
    Inventors: James B. Davidson, Peter N. Kaz, Michael H. Kidwell, Mark E. Zachman