Patents by Inventor Melinda A. Riddick

Melinda A. Riddick 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).

  • Apparatus and method of operating a fluid cylinder of a work machine
    Patent number: 6389952
    Abstract: A work machine is disclosed. The work machine includes a work implement and a fluid cylinder mechanically coupled to the work implement. The fluid cylinder is controlled by an apparatus that automatically places the fluid cylinder in a float mode of operation when a control valve fluidly coupled to the fluid cylinder is placed in a neutral position.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 21, 2002
    Assignee: Caterpillar Inc.
    Inventors: Melinda A. Riddick, Raj Velji