Patent ID: 8534579

Claim:
A grinding device comprising a mobile grinder group having openings for dispensing a ground product and a fixed counter-grinder having a central hole the surface of which comprises a grinding surface, wherein the grinder group comprises a casing and a grinder which can be fixedly coupled, said grinder having a grinding surface inserted inside the central hole of the counter-grinder and that cooperates with the opposing grinding surface of the counter-grinder when grinding a product, said grinder group being arranged straddling said counter-grinder with the casing being arranged outside the counter-grinder, wherein the casing can rotate with respect to the counter-grinder and is axially mobile with respect to the counter-grinder between two or more reciprocal adjustment positions, said grinder comprises a base disc from which a grinding cone, on which said grinding surface is arranged, projects perpendicularly, the grinding surface comprising a first series and a second series of ribbings, wherein the ribbings of said second series have pitch and height that are smaller than the ribbings of said first series, the base of the grinding cone takes up the central portion of the disc, wherein the surface of the disc forms, around such a base of the grinding cone, a step portion on which a plurality of openings for dispensing the ground product is arranged, and the grinder and the counter-grinder are made from a substantially rigid material and the casing is made from a substantially flexible material.