Electric resistance heating devices – Heating devices – Immersion heater details
Patent
1998-11-12
2000-09-12
Walberg, Teresa
Electric resistance heating devices
Heating devices
Immersion heater details
219481, 219510, H05B 340, H05B 302, H05B 102
Patent
active
061189340
ABSTRACT:
A safety protection structure for aquarium heater, including an anti-corrosion tube body in which an insulative receptacle, an electric heater, a thermal control switch, an anti-oxidation heat conductive layer, a grounding mechanism and multiple water-sealing members are disposed. The safety protection structure serves to protect the heater from leakage of electricity, blowing up due to abruptly increasing temperature after separated from the water and burning of environmental articles by over-heated surface of the heater after separated from the water.
REFERENCES:
patent: 3371192 (1968-02-01), Rosenel
patent: 5042426 (1991-08-01), Platt et al.
Campbell Thor
Walberg Teresa
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