US 11,849,885 B2
Bearing herb grinder
Amit Gorodetzer, Mt. Pleasant, SC (US)
Filed by Amit Gorodetzer, Mt. Pleasant, SC (US)
Filed on Jan. 24, 2020, as Appl. No. 16/751,292.
Claims priority of provisional application 62/797,015, filed on Jan. 25, 2019.
Prior Publication US 2020/0237158 A1, Jul. 30, 2020
Int. Cl. A47J 42/34 (2006.01); A47J 42/38 (2006.01)
CPC A47J 42/34 (2013.01) [A47J 42/38 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A grinder, comprising:
a base having a first plurality of grinding teeth for grinding a fibrous substance, and a lower bearing track encircling the first plurality of grinding teeth;
a plurality of ball bearings disposed in the lower bearing track; each ball bearing in the plurality of ball bearings consisting essentially of ceramic, polymer, or a combination thereof, and the plurality of ball bearings being without any lubricant;
an upper bearing track in rotational contact with the plurality of ball bearings, the upper bearing track comprising an inner bearing seal and an outer bearing seal both adapted to reduce contact between the fibrous substance and the plurality of ball bearings; and
a grinding cap comprising a second plurality of grinding teeth for grinding the fibrous substance, the grinding cap being adapted to contact the upper bearing track so that the grinding cap can be rotated relative to the base wherein the lower bearing track, the plurality of ball bearings, and the upper bearing track reduce friction between the grinding cap and the base;
wherein the grinding cap and the base define a gap between them, when the grinding cap is contacting the upper bearing track.