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US 7,000,858 B2Granted
Apparatus for producing fine powder
AssigneeThe Hong Kong Polytechnic University
InventorsYi Li, Weilin Xu
Life of this patent
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Abstract
An apparatus for grinding an organic material into a powder includes a first grinding member with a first grinding surface and a second grinding member with a second grinding surface. The first and second grinding members are rotatably positioned adjacent each other for grinding an organic material between the first and second grinding surfaces. The first and second grinding surfaces include radii defining of sectors. The sectors include rows of teeth parallel to respective radii.
Claims5
An apparatus for grinding an organic material into a powder comprising:
- a first grinding member with a concave grinding surface, and
- a second grinding member with a convex grinding surface including an apex at a center of the convex grinding surface, each of the concave and convex grinding surfaces including a plurality of radii defining a plurality of sectors, each sector including rows of teeth parallel to one of the radii defining the sector, wherein the first and second grinding members are rotatably positioned adjacent each other for grinding an organic material between the concave and convex grinding surfaces.
Dependencies are inferred from the claim text.