Grinding mill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 26, 2000
Grant Date -
N/A
app pub date -
Mar 12, 1999
filing date -
Mar 12, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A grinding mill is provided. The mill uses a substantially two-dimensional system for producing gyratory motion in a dish for the purpose of rotating a puck within the dish. The system includes a spin-disk having a circular off-center cavity for holding a dish holder fixedly containing a dish. When the spin-disk is rotated, the dish holder orbits about a point other than its center point, but does not rotate about its center point because its movement is limited by a restrainer. A puck is disposed within the dish, possibly along with a ring, in a fashion that allows the puck, and the ring if present, to freely move within the dish. Thus, the dish holder orbits but does not rotate and the puck spins or bounces within the dish. The combination of these movements causes the puck to impact the dish in a way that crushes a sample within the dish. The mill may be constructed small enough to be used on a work bench. It can also be completely enclosed in a carrying case for efficient transport and storage.
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