Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1983-12-21
1985-09-10
Paschall, M. H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219501, 219491, 323312, 323909, H05B 102
Patent
active
045408777
ABSTRACT:
A temperature controller for monitoring the temperature of a rotating heating system and regulating the temperature relative to a desired temperature. A transmitter within the rotating system coupled to a remote stationary controller via slip rings produces a magnitude varying current control signal within a calibrated range at a magnitude proportional to the sensed temperature. A pair of voltage dividers within the transmitter establish the level and range of current magnitude relative to a constant current source. The remote stationary controller compares the current control signal to a set-point and synchronously supplies power to the heater elements of the rotating system, so long as the sensed temperature is below the desired temperature.
REFERENCES:
patent: 3637984 (1972-01-01), Irvine
patent: 3813516 (1974-05-01), Kudsi et al.
patent: 4021722 (1977-05-01), Crowle
patent: 4114023 (1978-09-01), Zelinka et al.
IBM Technical Disclosure Bulletin, vol. 12, #4, 9/1969, p. 617, "Temperature Transducer".
Sutherland George K.
Thielen Thomas J.
Zelinka Richard J.
Haugen Orrin M.
Nikolai Thomas J.
Paschall M. H.
Sys-Tec, Inc.
Tschida Douglas L.
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