Electrical heating

Details Electrical heating Electrical heating

1989-09-25

1991-08-06

Walberg, Teresa J.

Electric heating

Heating devices

Combined with diverse-type art device

219549, 392435, H05B 334

Patent

active

050380184

ABSTRACT:
A truck trailer or similar bulk storage area is heated by providing electrical resistance heaters in longitudinally-extending metal ducts extending from and to a short distance below the floor level. Electrical sheet resistance heaters are attached to the underside of the metal plate forming the duct top, each duct is placed between a longitudinally-extending pair of wooden floor boards, and a pair of ducts are placed side-by-side near each edge of the trailer bed or floor of the storage area.

REFERENCES:
patent: 1174031 (1916-02-01), Hadaway
patent: 1954128 (1934-04-01), Heyroth
patent: 2760726 (1956-08-01), Parks
patent: 3020379 (1962-02-01), Ludlow
patent: 3445628 (1969-05-01), Bateman
patent: 3657516 (1972-04-01), Fujihara
patent: 4471212 (1984-09-01), Hager
patent: 4656339 (1987-04-01), Grise

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