Machine for manufacturing insulated duct

Details Machine for manufacturing insulated duct Machine for manufacturing insulated duct

1974-11-07

1976-04-13

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

156144, 156203, 156468, B29D 2310

Patent

active

039502139

ABSTRACT:
A machine is provided for making flexible tubular insulated duct having multiple wraps formed about a compressible inside core. A sheet forming collar shapes the wraps about the core upstream of a joint sealer which cooperates with an underlying conveyor to draw the core and wrap materials along a linear path of movement through the joint sealer to form a longitudinally extending joint on the outermost wrap of the duct. A second conveyor overlies the first conveyor downstream of the joint sealer, and the second conveyor and the joint sealer are selectively adjustable in height to form duct of selected diameter size and to apply a desired tractive force to the sealed duct. A cutting unit is selectively operable downstream of the second conveyor for cutting the duct into predetermined lengths.

REFERENCES:
patent: 2697473 (1954-12-01), Techtmann
patent: 2906317 (1959-09-01), Keyes
patent: 3220320 (1965-11-01), Brigham
patent: 3528159 (1970-09-01), Miles
patent: 3627615 (1971-12-01), Guiles et al.
patent: 3816043 (1974-06-01), Snelling

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