Coffee grinder

Details Coffee grinder Coffee grinder

1990-08-08

1991-10-22

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Series material flow only through plural comminuting zones

99286, 2412612, A47J 4216

Patent

active

050588141

ABSTRACT:
A grinder for coffee beans, comprising a hopper, two grinding burrs arranged for relative rotation about a vertical axis, and a chamber defined by walls including an outer wall and a lower plate, which has two outlets. At each outlet, a flexible blade mounted to such outlet closes such outlet until coffee grounds in the chamber are pressed downwardly with sufficient force to flex the blade. A rotor arranged to sweep in the chamber has portions having inclined faces whereby grounds being swept tend to be downwardly pressed. Each outlet is configured to direct grounds downwardly and radially. The outer wall is relieved to define two spiral configurations countering tendencies of the grounds to rotate as an annular mass.

REFERENCES:
patent: 3761027 (1973-09-01), Mendoza
patent: 3827640 (1974-08-01), Marrie
patent: 4060206 (1977-11-01), Granzow
patent: 4555984 (1985-12-01), Yamashita
patent: 4605175 (1986-08-01), Weber
patent: 4641572 (1987-02-01), Varga
patent: 4659023 (1987-04-01), Frei et al.
patent: 4821966 (1990-04-01), Ephraim et al.
Bunn-O-Matic Corp., Manual, Precision Coffee Grinder, Model G9, Copyright 1984--16 pages including covers.

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