Device for heating liquids

Electric resistance heating devices – Heating devices – Tank or container type liquid heater

Reexamination Certificate

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Details

C392S498000, C219S441000

Reexamination Certificate

active

10569850

ABSTRACT:
The invention relates to a device for heating liquids, comprising: a liquid container, at least one electrical heating element connected to the liquid container for heating liquid received in the liquid container, at least one boiling sensor connected to, the inner side of the liquid container for detecting a boiling temperature in a part of the liquid container located above the liquid, at least one overheating sensor thermally connected to the heating element, and an electrical circuit in which the heating element, the boiling sensor and the overheating sensor are received such that a power supply to the heating element can be interrupted by the boiling sensor and the overheating sensor.

REFERENCES:
patent: 2987607 (1961-06-01), Paulin
patent: 3784788 (1974-01-01), Fourny
patent: 4278873 (1981-07-01), Petrides
patent: 4360726 (1982-11-01), Haden
patent: 4539468 (1985-09-01), Phillips et al.
patent: 4544830 (1985-10-01), Miller
patent: 4645910 (1987-02-01), Chhatwal
patent: 5693244 (1997-12-01), Pragt et al.
patent: 0 380 369 (1990-08-01), None
patent: 1 095 161 (1967-12-01), None
patent: 2 153 190 (1985-08-01), None
patent: 2 346 738 (2000-08-01), None

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