Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1984-01-11
1985-11-12
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
137341, 138 33, 174 47, 219308, 219522, 2221465, H05B 358, F16L 1112, F16L 5300, B67D 562
Patent
active
045530238
ABSTRACT:
A flexible heated hose for transporting molten adhesive from a melter to a dispenser. The hose comprises a Teflon tube contained within stainless steel braided wire and fitted with conventional hydraulic fittings at each end. The braided tube is encased within a multiple ply covering which includes a first layer of fiberglass tape around which are wound electrical resistance heating wires, a resistance temperature detector, electrical leads including a ground wire, and two plies of helically wound fiberglass tape, with a layer of helically wound Aramid fiber, two layers of helically wound polyester felt, and a layer of helically wound vinyl tape covering the same. The heating wires, electrical leads, and temperature detector are adhesively secured to the first layer of fiberglass tape which is in turn adhesively secured to the stainless steel braided wire covering the Teflon tube. In a modified embodiment, the ground wire is wound separate from the other electrical leads. A braided polyester cover forms the exterior of the hose, with hard molded plastic cuffs attached to the ends of the hose. The electrical leads to the heating wires, temperature detector and dispenser extend radially from the hose through holes in the cuffs. Electrical plug-in adapters are attached to the ends of the electrical leads.
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Baker Robert G.
Jameson Calvin R.
Bartis A.
Nordson Corporation
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