Patents by Inventor Pieter C. Kruithof, Jr.

Pieter C. Kruithof, Jr. 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: 6241047
    Abstract: A personnel carrying vehicle comprises a self propelled, steerable body, a telescoping mast attached to and extending upwardly from the body, and a personnel compartment attached to the mast. Two control handles are mounted within the personnel compartment, with one handle including a rocker mechanism mounted therein for pivotal movement within a generally horizontal plane to control steering and the other handle being rotated to controlling traction. Sensors ensure that the operator's hands are on both control handles and both feet are properly positioned on a floor of the operator's compartment before the vehicle can be moved or the platform raised; this ensures a four point stance, providing for operator stability and that the operator's hands and feet are within the operator's compartment anytime the vehicle is being moved or during lifting or lowering operations.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: June 5, 2001
    Assignee: Crown Equipment Corporation
    Inventors: Kevin A. Gilliland, Bradley A. Burns, Joseph H. Knapschaefer, John F. McClusky, Leif A. Norland, Daniel L. Sherman, David B. Smith, Harold A. Stammen, Robert J. Stauffer, Ronald A. Grisez, William J. Heidemann, Matthew P. Ranly, Thomas W. Linn, Ned E. Dammeyer, Pieter C. Kruithof, Jr.
  • Patent number: D408769
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: April 27, 1999
    Assignee: Crown Equipment Corporation
    Inventors: Kevin A. Gilliland, Pieter C. Kruithof, Jr., John F. McClusky, Leif A. Norland, Steven R. Pulskamp, Harold A. Stammen