Coffee grinder

Details Coffee grinder Coffee grinder

1985-07-08

1986-08-19

Shoop, Jr., William M.

Electricity: motive power systems

Automatic and/or with time-delay means

Time or with time-delay means

318445, 318446, 241 33, H02P 110, B02C 1912

Patent

active

046072004

ABSTRACT:
A coffee grinder has a control circuit for its electric grinder motor which includes a three-position control switch having a resident "Off" position, a resident "On" position, and a non-resident or momentary "On plus Start" position. In the "Off" position power is interrupted to all circuits of the grinder. The "On" position is a resting position which is resumed after the start of each grind cycle in readiness for the start of another grind cycle. The "On plus Start" position is momentary and in which a relay is energized so as to complete a circuit that energizes the grinder motor. In one type of coffee grinder the electrical control circuit includes a timer which can be set to determine the length of the grinding cycle. In another type of coffee grinder the length of the grinding cycle is determined by the presence of a ground coffee receiving bag or other container. In both types of grinders the normal grinding cycle can be terminated by placing control switch in its "Off" position.

REFERENCES:
patent: 2496574 (1950-02-01), Boger
patent: 3424919 (1969-01-01), Howlett
patent: 3958164 (1976-05-01), Hess
patent: 4037068 (1977-07-01), Gaynor
patent: 4490659 (1984-12-01), Hansen
patent: 4491905 (1985-01-01), Arakawa

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