Apparatus for preparing beverages with end of brew phase detecti

Details Apparatus for preparing beverages with end of brew phase detecti Apparatus for preparing beverages with end of brew phase detecti

1999-02-03

2000-07-04

Alexander, Reginald L.

Foods and beverages: apparatus

Beverage

Infusors

99281, 99283, 99285, A47J 3100

Patent

active

060822457

ABSTRACT:
An apparatus for preparing beverages, such as a coffee brewer, has a device for measuring the periods of time during which the heating element is switched on and off by a thermostat connected in series with the heating element. The ratio between the on period and the off period is computed. If the off period is smaller than the on period, an indication is given that there is scale deposit in the water pipe. If the off period is greater than the on period, an indication is given that brewing has finished and, optionally, the heating element may be switched off permanently.

REFERENCES:
patent: 4838152 (1989-06-01), Kubicko et al.
patent: 5283854 (1994-02-01), Schiebelhuth
patent: 5402705 (1995-04-01), Bailleux et al.
patent: 5455887 (1995-10-01), Dam
patent: 5549035 (1996-08-01), Wing-Chung

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