Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1977-12-27
1980-07-22
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
99281, 99285, 99288, 99307, 219283, 219330, 219506, 222146HE, H05B 102, A47J 3156, A47J 3158, F24H 110
Patent
active
042141486
ABSTRACT:
Calcification sufficient to cause material impairment of heat transfer is indicated in a water heater in an electric appliance, such as a coffee maker. The water heater has a first and a second temperature-dependent switch thermally coupled thereto. The first switch serves as a final interrupter or temperature control. The switching temperature of the second switch is below that of the first one in the range of temperatures which occur in the water heating operation if excessive calcification is present. A time delay member after a predetermined time actuates an indicating signal. The time delay member is in operation when only the second temperature-dependent switch is in responded condition. The time delay member ceases operation and returns to its original state when both temperature-dependent switches are in the responded state or the original condition.
REFERENCES:
patent: 3711681 (1973-01-01), Leuschner et al.
patent: 4122763 (1978-10-01), Waninger
patent: 4139761 (1979-02-01), Obrowski
Bartis A.
Bosch-Siemens Hausgerate GmbH
Lerner Herbert L.
LandOfFree
Indicator for the extent of clarification of waterheaters in ele does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Indicator for the extent of clarification of waterheaters in ele, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indicator for the extent of clarification of waterheaters in ele will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2179661