Dispensing apparatus for an aircraft anti-icing and biocidal fuel additive

Claim 1

An additive metering and dispensing system including: an additive storage tank, having inlet and outlet means, adapted to receive an additive under pressure; a volume regulator, having inlet-outlet means, adapted to receive and dispense through said inlet-outlet means a selected variable measured amount of additive on each operation cycle and wherein the volume regulator has means for selectively varying the amount of additive during the operation cycle; a three-way valve means having first and second outlet means and an inlet means connected to the outlet means of said storage tank adapted to selectively connect said first outlet means thereof to the inlet-outlet means of the volume regulator in response to a signal and to selectively connect said inlet-outlet means of volume regulator to said second outlet means to deliver thereto a measured amount of additive; measuring means for measuring a fluid stream to which the additive is to be added; means connecting said second outlet into the measured fluid stream; means for developing a signal in response to a predetermined measure of fluid by said measuring means and means for applying the developed signal to the three-way valve to deliver a measured amount of additive to the measured fluid stream in response to the measuring means passing a predetermined amount of fluid.