Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
1980-04-25
1981-12-29
Scott, Samuel
Stoves and furnaces
Hot-air furnaces
Compressed air
98 40C, 432222, F24H 302
Patent
active
043077013
ABSTRACT:
A portable heating unit comprising a heater and a low velocity blower, an elongated lightweight collapsible flexible heat carrying duct and an intermediate high velocity intake fan unit for mixing the low velocity heated air from said portable heater with ambient air and introducing the mixed air streams into the inlet end of said flexible duct. The intake fan unit includes a venturi for assuring adequate mixing of the air within the elongated flexible collapsible tube to provide a high velocity flow of air at a substantially constant temperature level along the length of the flexible tube. The tube is provided with a plurality of openings arranged in spaced intervals to eject high velocity jets of heated air at locations where they may be used most effectively.
The unit is designed to be positioned upon the ground and the remote end is sealed and preferably staked or otherwise held to the ground to prevent undue movement.
The diameter of the elongated flexible tube is selected to enable the tube to fit beneath a bench, preferably made of a metallic material to provide good heat conductivity. Openings are provided in the tube to emit air beneath the bench in order to heat the bench and thereby provide much needed warmth to persons sitting on the bench. Additional openings are arranged to emit the heated air at an angle chosen to direct the air toward the back part of the knees of persons sitting upon the bench. High velocity jets of heated air emitted from such openings may also be utilized as handwarming means for simultaneously warming the hands of a large group of persons in the vicinity of the tube by placement of the hands into the jets of heated air being emitted by said tube without danger of burning.
The lightweight collapsible nature of the apparatus greatly facilitate both assembly and disassembly as well as the transportability of the portable heating system.
REFERENCES:
patent: 1719659 (1929-07-01), Hopkins
patent: 2684668 (1954-07-01), Culp et al.
patent: 2966347 (1960-12-01), Wolffradt
patent: 3050111 (1962-08-01), Hubbard et al.
patent: 3221415 (1965-12-01), Murray
patent: 3302549 (1967-02-01), Tibbitts et al.
patent: 3520244 (1970-07-01), Gaines, Jr.
patent: 3603511 (1971-09-01), La Pierre
patent: 3916870 (1975-11-01), Beavers
patent: 3948246 (1976-04-01), Jenkins
Balon Jack
Balon Thomas H.
Green Randall L.
Scott Samuel
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