Patents by Inventor Donald John Stuart

Donald John Stuart 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).

  • Nonrotating pivotable solar panel
    Patent number: 6552257
    Abstract: An apparatus for enabling a solar panel to track a solar or other energy source, comprising a panel; a mast; a first collar slidingly receiving the mast; a sleeve slidingly receiving the mast and the link tube; a controller second collar slidingly receiving the mast; a universal joint comprising a first section and a second section, both sections pivotably joined, the first section fixedly attached to one end of the mast; a first arm fixedly attached to the controller second collar; a second arm fixed attached to the first collar; a link pivotably joining the first arm and the second arm; a first stop associated with the first collar; wherein the mast is capable of vertical movement within the first collar such that the panel can tilt and be displaced angularly.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: April 22, 2003
    Assignee: American Signal Company
    Inventors: Stephen P. Hart, Donald John Stuart, Patrick Henry Ryan, Jr.
  • NONROTATING PIVOTABLE SOLAR PANEL
    Publication number: 20030070704
    Abstract: An apparatus for enabling a solar panel to track a solar or other energy source, comprising a panel; a mast; a first collar slidingly receiving the mast; a sleeve slidingly receiving the mast and the link tube; a controller second collar slidingly receiving the mast; a universal joint comprising a first section and a second section, both sections pivotably joined, the first section fixedly attached to one end of the mast; a first arm fixedly attached to the controller second collar; a second arm fixed attached to the first collar; a link pivotably joining the first arm and the second arm; a first stop associated with the first collar; wherein the mast is capable of vertical movement within the first collar such that the panel can tilt and be displaced angularly.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 17, 2003
    Inventors: Stephen P. Hart, Donald John Stuart, Patrick Henry Ryan