Electrically heated hose for heating melted adhesive and atomizi

Details Electrically heated hose for heating melted adhesive and atomizi Electrically heated hose for heating melted adhesive and atomizi

1984-10-19

1987-05-19

Bartis, Anthony

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

138 33, 138114, 174 47, 219421, 219522, 2221465, 239135, H05B 358, F16L 918, F16L 1112, B67D 562

Patent

active

046670840

ABSTRACT:
An electrically heated hose for simultaneously heating and feeding melted adhesive and pressurized air to an adhesive spraying head includes a tubular central flexible plastic core for feeding the adhesive therethrough, a resistance heating type helically wrapped around the core with adjacent turns spaced from each other and an outer layer of thermal insulation surrounding the tape and core so that a helically-shaped air passage is formed between adjacent spaced helical turns of the heating tape, the inner wall of the outer layer and the outer wall of the core. A pressurized air admitting tube is connected to one end of the helical passage and a pressurized air discharge tube is provided at the opposite end thereof for supplying the pressurized air in a preheated condition to the spraying head for atomization of the melted adhesive.

REFERENCES:
patent: 2243220 (1941-05-01), Pitman
patent: 2516864 (1950-08-01), Gilmore
patent: 2546741 (1951-03-01), Grossman
patent: 2760047 (1956-08-01), Hanson
patent: 2778609 (1957-01-01), Peeps
patent: 3378673 (1968-04-01), Hopper
patent: 3592238 (1971-07-01), Scheffler et al.
patent: 3727029 (1973-04-01), Chrow
patent: 4194536 (1980-03-01), Stine et al.
patent: 4308447 (1981-12-01), Notzold

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