Patents by Inventor Robert G. Gilbert

Robert G. Gilbert 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).

  • Sprayer thermal protection
    Patent number: 9027849
    Abstract: In an electric airless sprayer (16), as the motor (14) temperature approaches allowable limits, several performance cutbacks can be used to prevent overheating. The preferred method is to gradually reduce the controlled pressure. If the temperature continues to rise, the control (20) switches to on/off or deadband control. If the temperature continues to rise in spite of these measures, the control (20) shuts the unit down.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: May 12, 2015
    Assignee: Graco Minnesota Inc.
    Inventors: Robert J. Lind, Robert G. Gilbert