Patents by Inventor Rex N. Johnsen

Rex N. Johnsen 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).

  • Patent number: 5533590
    Abstract: All wheel steer work vehicles are useful for working in conditions which require greater maneuverability and traction. When simultaneous work operations and steering is required, a control having both functions is required. The subject vehicle includes a steering wheel for steering a first pair of wheels, an implement lever for controlling the implement work functions, and a switch means for steering a second pair of wheels mounted on the implement lever. This arrangement of components provides simultaneous movement of a work mechanism and steering of the second pair of wheels using only one hand of an operator.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: July 9, 1996
    Assignee: Caterpillar Inc.
    Inventors: Mark A. Steffen, Lynn A. Sutton, Gregory K. Stuckey, Rex N. Johnsen