Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 28, 2012
Patent Application Number
12551611
Date Filed
September 1, 2009
Patent Citations Received
Patent Primary Examiner
Patent 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.
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