Patents by Inventor Wark E. Rickey

Wark E. Rickey 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).

  • Variable orifice for particulate coal conduit
    Patent number: 8544499
    Abstract: A simplified variable orifice for a conduit furnishing a stream of particulate coal to a burner for a turbine in an electrical utility plant. Two plates are installed across the conduit, one of them being fixed and the other being variable in angular position relative to the first. A lockable mechanism is provided externally of the conduit to manually adjust the degree of blocking and to indicate the position of the movable plate.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: October 1, 2013
    Inventor: Wark E. Rickey
  • Variable orifice for particulate coal conduit
    Publication number: 20080190335
    Abstract: A simplified variable orifice for a conduit furnishing a stream of particulate coal to a burner for a turbine in an electrical utility plant. Two plates are installed across the conduit, one of them being fixed and the other being variable in angular position relative to the first. A lockable mechanism is provided externally of the conduit to manually adjust the degree of blocking and to indicate the position of the movable plate.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 14, 2008
    Inventor: Wark E. Rickey