Electric resistance heating devices – Heating devices – Convection space heater
Patent
1990-03-12
1992-05-05
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Convection space heater
392365, 392379, 392478, 392476, 219542, F24H 300
Patent
active
051115271
ABSTRACT:
A forced gas electric heater has a serpentine heating element in series with a preheat coil. Gas to be heated first flows through the preheat coil before flowing through the serpentine heating element. A thermistor is disposed between two adjacent turns of the preheat coil. The thermistor controls the "on" time of a solid state power control device which is in series with the preheat coil and the serpentine heating element.
REFERENCES:
patent: 1490089 (1924-04-01), Bridges
patent: 3094606 (1963-06-01), Ferris
patent: 3474963 (1969-10-01), Buiting et al.
patent: 3551643 (1970-12-01), Pricenski
patent: 3560710 (1971-02-01), Fuellemann
patent: 3594546 (1971-07-01), Smillie
patent: 3654431 (1972-04-01), Brooks et al.
patent: 3783236 (1974-01-01), Edin
patent: 4547656 (1985-10-01), Swiatosz et al.
patent: 4660510 (1987-04-01), Draper
patent: 4825043 (1989-04-01), Knauss
Arold Johathan B.
Mishou Joan L.
Parent Charles R.
Stark Joseph P.
Webb Edward A.
GTE Products Corporation
Hoang Tu
Reynolds Bruce A.
Theodosopoulos James
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