Patent ID: 6420665
Filing Date: 2002-07-16
Classification: B65G,G01G

Abstract:
A device for metering and dispensing dosed quantities of a pulverulent product, the device comprising:a tank means for storing the pulverulent product; a tubular duct extending into said tank means, said tubular duct having a loading opening within said tank means and a discharge opening exterior of said tank means; a metering means interior of said tubular duct for metering the pulverulent product, said metering means for transporting the pulverulent product from said loading opening to said discharge opening; and a blocking means positioned at said discharge opening, said blocking means being selectively positionable between a first position of total unobstruction of said discharge opening and a second position generally blocking said discharge opening, said second position of said blocking means defining an annular interval between a periphery of said blocking means and an inner wall of said tubular duct at said discharge opening, said annular interval having a width generally equal to a size of grains of the pulverulent product, said blocking means in said first position for allowing a maximum flow rate of the pulverulent product therethrough, said blocking means in said second position for allowing a reduced flow rate of the pulverulent product through said discharge opening.