Transfer and dosing device of pulverulent or granular material contained in a hopper
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United States of America Patent
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May 29, 2007
Grant Date -
Feb 16, 2006
app pub date -
Aug 4, 2005
filing date -
Aug 10, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A dosing device of a pulverulent material uses an oscillating drive mechanism with straight to-and-fro movement to extract and dose a pulverulent material contained in a hopper with a calibrated outlet aperture, and then to transfer the extracted mass to a removal point. The hopper can be fixed or movable. To measure the mass flowrate extracted from the aperture, the hopper is connected to the mechanism by a flexible blade and bears on a table equipped with a weighing cell formed by a weight sensor. The weight variation indicates the mass flowrate, which can be adjusted by acting on the oscillation frequency of the mechanism, or on the opening of the outlet aperture.
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