Precision coffee grinder

Details Precision coffee grinder Precision coffee grinder

1984-09-10

1986-08-12

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 66, 241163, 2412611, 2412612, B02C 1912

Patent

active

046051759

ABSTRACT:
A coffee grinder grinds a predetermined amount of roasted coffee beans based upon the weight of the beans. The beans fall from a hopper into a grinding head which grinds the beans in a two-stage process. The first stage includes a cracking cutter, consisting of a cone cutter and a reel cutter, which reduces the beans to an initial particle size of approximately 1/16 of an inch in cross-section. The particles are then progressed by the grinding head, for the second stage of fine grinding, to an adjustable micro grinder consisting of two opposing rings having micro teeth on their inwardly facing surfaces. The cutters and grinder rings are mounted on thermally conductive metal hubs and a fan draws air around and behind the cutting teeth to cool them and avoid heating the coffee particles during the grinding process.

REFERENCES:
patent: 938923 (1909-11-01), Walker
patent: 989217 (1911-04-01), Wear
patent: 1488166 (1924-03-01), Pottratz
patent: 2045591 (1936-06-01), Falla
patent: 2934278 (1960-04-01), Roberson

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