Hybrid hot air heater

Details Hybrid hot air heater Hybrid hot air heater

2006-03-14

2006-03-14

Jeffery, John A. (Department: 3742)

Electric resistance heating devices

Heating devices

Combined with nonelectric heating means

C392S365000

Reexamination Certificate

active

07013079

ABSTRACT:
In a hybrid hot air heater according to the present invention, a chassis having first and second outlets13on its front face and first and second inlets12on its rear face incorporates therein a gas heater unit2comprised of a gas burner20and a first air-blowing fan21and an electric heater unit3comprised of an electric heater33and a second air-blowing fan30in such a manner that the air blowing systems for the respective two heaters may be independent of each other.

REFERENCES:
patent: 5937139 (1999-08-01), Peterson
patent: 6795643 (2004-09-01), Ito et al.
patent: 2004/0103892 (2004-06-01), Shimonoma et al.
patent: 2004/0109680 (2004-06-01), Ito et al.
patent: 2004/0151480 (2004-08-01), Ito et al.
patent: 2610089 (1988-07-01), None
patent: 2687899 (1993-09-01), None
patent: 55-63348 (1980-05-01), None
patent: 58-184431 (1983-10-01), None

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