Patents by Inventor James Leo Campbell

James Leo Campbell 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).

  • Fluid level indicator in an airless fluid sprayer
    Patent number: 9038923
    Abstract: The present disclosure generally relates to systems and devices for spraying fluid materials such as paints, stains, and the like, and more specifically, but not by limitation, to a fluid level indicator for an airless fluid sprayer. In one example, an airless fluid sprayer is provided and includes a fluid container, a controller, and a fluid level indication module implemented by the controller to generate an indication of a level of fluid material in the fluid container.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: May 26, 2015
    Assignee: WAGNER SPRAY TECH CORPORATION
    Inventors: Wayne D. Robens, Gregory Wayne Parkhurst, James Leo Campbell
  • FLUID LEVEL INDICATOR IN AN AIRLESS FLUID SPRAYER
    Publication number: 20110240758
    Abstract: The present disclosure generally relates to systems and devices for spraying fluid materials such as paints, stains, and the like, and more specifically, but not by limitation, to a fluid level indicator for an airless fluid sprayer. In one example, an airless fluid sprayer is provided and includes a fluid container, a controller, and a fluid level indication module implemented by the controller to generate an indication of a level of fluid material in the fluid container.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 6, 2011
    Applicant: Wagner Spray Tech Corporation
    Inventors: Wayne D. Robens, Gregory Wayne Parkhurst, James Leo Campbell