Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1977-05-09
1978-08-29
Truhe, J. V.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219248, H05B 102
Patent
active
041106016
ABSTRACT:
A control system having a thermostatically operated control device for operatively interconnecting a heater to a source of energy when the output effect of the heater is below a predetermined setting of the control device and to disconnect the heater from the source of energy when the output effect of the heater is above the predetermined setting of the control device, the control device operating an indicating light to indicate that the output effect of the heater is still above a certain value when the control means is in an "off" setting thereof.
REFERENCES:
patent: 2450399 (1941-11-01), Sheidler
patent: 2593812 (1952-04-01), Turner
patent: 3612826 (1971-10-01), Deaton
Bell Fred E.
Robertshaw Controls Company
Truhe J. V.
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