Patents by Inventor Charles E. Burris

Charles E. Burris 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).

  • DOOR CLOSER ASSEMBLY
    Publication number: 20090093913
    Abstract: A door closer assembly is provided, including a valve regulating an amount of hydraulic fluid that flows through the valve. The amount of hydraulic fluid flowing through the valve controls a force generated by the door closer assembly on a door. A first sensor measures an angular position of the door, and a second sensor measures an angular position of the valve. The angular position of the valve determines the amount of hydraulic fluid flowing through the valve. A controller controls the adjustment of the valve based on the angular position of the door and the angular position of the valve.
    Type: Application
    Filed: April 24, 2008
    Publication date: April 9, 2009
    Inventors: David James Copeland, II, Keith James Weepie, Robert L. Tadlock, JR., Charles E. Burris