Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1976-04-26
1977-11-15
Albritton, C. L.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219327, 219328, 219330, 219486, H05B 100
Patent
active
040587029
ABSTRACT:
A fluid tank, with an inlet and an outlet, is provided with first heating means for heating the fluid in the tank to a first temperature and a second heating means for heating the fluid to a second temperature which is lower than the first temperature. A thermostatic switch is disposed to be responsive to the temperature of the fluid in the tank outlet to enable the first heating means only when the temperature in the outlet is above a predetermined level. The fluid in the tank is maintained at a low temperature during periods of non-use, and at an increased temperature only during periods of use, thus economizing on heating energy.
REFERENCES:
patent: 1284876 (1918-11-01), Clark et al.
patent: 2779855 (1957-01-01), Sawyer
Albritton C. L.
Electro-Thermal Corporation
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