Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1992-05-29
1993-11-30
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219494, 219508, 219501, 340589, 607104, H05B 102
Patent
active
052667782
ABSTRACT:
A dynamic temperature control to selectively generate one of a plurality of discrete voltage level temperature control signals for use with a fluid circulating system operable in a heating or cooling state including a control panel to select the system operating parameters including operating temperature of the fluid and at least one temperature sensor, the dynamic temperature control comprises logic circuitry to receive temperature input signals from the control panel and temperature sensor and to generate one of the plurality of discrete voltage level temperature control signals proportional to the difference between the input signals from the control panel and the temperature sensor to control the operating temperature of the fluid circulated through the fluid circulating system.
REFERENCES:
patent: 3594546 (1971-07-01), Smillie
patent: 3967627 (1976-07-01), Brown
patent: 4459468 (1984-07-01), Bailey
patent: 4459469 (1984-07-01), Ishima
patent: 4852544 (1989-08-01), Williams et al.
patent: 5041809 (1991-08-01), Payne et al.
Fisher III A. W.
Hollister Inc.
Paschall Mark H.
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