Coil assembly for hot melt induction heater apparatus
AssigneeThe Boeing Company
InventorArthur W. McDermott
Life of this patent
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Abstract
An induction heating coil having fluoroplastic coated polyimide tape wrapped windings for providing a bonded, solid monolithic structure. The induction heating coil includes a cooling heatsink of predetermined size and shape fused in relationship to a plurality of consecutive turns of current-carrying coil windings. A plurality of fluoroplastic coated polyimide sheets are fused to the coil body between the coil body and a fluoroplastic face sheet forming the outer wear surface of the induction heater coil, thereby providing a non-stick surface for release of hot melt adhesives.
Claims4
A coil assembly for use in induction heating apparatus comprising a plurality of windings of a flat shaped electrical conductor, said electrical conductor wrapped with a polyimide tape, said polyimide tape having two major side surfaces, each of said side surfaces having a coating of fluoroplastic material, and, including a fluoroplastic face sheet supported by a major surface of said coil assembly and providing a non-stick surface for release of hot melt adhesive material;
- said coil assembly further including a heat sink disposed on a major surface of said coil assembly opposite said major surface supporting said fluoroplastic face sheet;
- and,
- wherein the stack of elements comprising face sheet (12), a plurality of coated polyimide sheets (20) and a coil body (10), when fixtured (FIG. 8), provides a clamping pressure to insure fusing.
A coil assembly for use in induction heating apparatus comprising a plurality of windings of a flat shaped electrical conductor, said electrical conductor wrapped with polyimide tape, said polyimide tape having two major side surfaces, each of said side surfaces having a coating of fluoroplastic material, and, including a fluoroplastic face sheet supported by a major surface of said coil assembly and providing a non-stick surface for release of hot melt adhesive material;
- said coil assembly further including a heat sink disposed on a major surface of said coil assembly opposite said major surface supporting said fluoroplastic face sheet;
- and,
- wherein said fluoroplastic face sheet has a thickness of 32 mils .+-.2 to 3 mils.
A coil assembly for use in induction heating apparatus comprising a plurality of windings of a flat shaped electrical conductor, said electrical conductor wrapped with a polyimide tape, said polyimide tape having two major side surfaces, each of said side surfaces having a coating of fluoroplastic material, and, including a fluoroplastic face sheet supported by a major surface of said coil assembly and providing a non-stick surface for release of hot melt adhesive material;
- said coil assembly further including a heat sink disposed on a major surface of said coil assembly opposite said major surface supporting said fluoroplastic face sheet;
- and,
- wherein said heat sink comprises a copper slotted washer-like member.
Dependencies are inferred from the claim text.