Foods and beverages: apparatus – Beverage – Infusors
Patent
1985-12-13
1987-05-19
Jenkins, Robert W.
Foods and beverages: apparatus
Beverage
Infusors
99289R, 222 66, A47J 3100
Patent
active
046658084
ABSTRACT:
Described is a coffee percolator having a reservoir provided with means for sensing the filling level of coffee meal therein. The filling level sensing means comprises an electro-optical sensor secured to the outer side of the reservoir across a corner formed by portions of a sidewall and a bottom wall. An emitter and a receiver of said electro-optical sensor are disposed along an optical axis extending through the interior of the reservoir substantially diagonally across the corner, the sidewall and the bottom wall being optically transparent at least at the locations whereat the optical axis passes therethrough.
REFERENCES:
patent: 1398790 (1921-11-01), Ogur
patent: 2517073 (1950-08-01), Alvarez
patent: 3253534 (1966-05-01), Ross
patent: 3941042 (1976-03-01), Wells
patent: 4572060 (1986-02-01), Yung-Kuan
Jenkins Robert W.
Wuerttembergische Metallwarenfabrik AG.
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