Device for the heating of a liquid

Details Device for the heating of a liquid Device for the heating of a liquid

2003-07-03

2009-02-03

Campbell, Thor S (Department: 3742)

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

C222S071000

Reexamination Certificate

active

07486877

ABSTRACT:
The present invention concerns a device for the heating of a liquid in a beverage machine comprising at least one set of at least two resistors, wherein said resistors are electrically linked together so as to use one resistor of each set individually or in serial with one or more of the resistors of the same set, at least one individual resistor and at least one set of two resistors, wherein said resistors are electrically linked together so as to use the first resistor of a set individually or in serial with one or more of the following resistors of the same set, said resistors transferring the maximum of energy to the flow of liquid and allowing a finer control of the liquid temperature.

REFERENCES:
patent: 978808 (1910-12-01), Ayer
patent: 3247359 (1966-04-01), Feld et al.
patent: 3953923 (1976-05-01), Rygmyr
patent: 4975559 (1990-12-01), Frisch
patent: 5434388 (1995-07-01), Kralik et al.
patent: 6459854 (2002-10-01), Yoakim et al.
patent: 0 294 580 (1990-12-01), None
patent: 01 54551 (2001-08-01), None

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