Method for producing insulated coils and products thereof

Claim 1

IN THE PROCESS OF PREPARING A MULTILCONDUCTOR COIL HAVING A SLOT PORTION AND END PORTIONS EXTENDING FROM EACH END OF THE SLOT PORTION, THE STEPS COMPRISING ASSEMBLING A PLURALITY OF LIGHTLY INSULATED CONDUCTORS INTO A RELATIVELY STRAIGHT, LOOSE WINDING, APPLYING A LIQUID, COMPLETELY REACTIVE, THERMOSETTABLE RESIN TO THE CENTRAL PORTION OF THE WINDING OF A LENGTH TO FORM THE DESIRED SLOT PORTION, THE RESIN COATING AND IMPREGNATING ALL OF THE CONDUCTORS AT SAID CENTRAL PORTION, WRAPPING THE RESIN COATED CENTRAL PORTIN WITH A LAYER OF AN IMPERVIOUS SOLILD FILM OF A RESIN NON-ADHERENT TO THE APPLIED RESIN, THE WRAPPING SERVING TO RETAIN THE LIQUID RESIN IN THE CENTRAL PORTION, MOLDING THE WRAPED AND RESIN COATED CENTRAL PORTION UNDER HEAT AND PRESSURE IN ORDER TO COMPACT THE CENTRAL PORTION INTO DESIRED SHAPE AND SIZE, AND TO CONVERT THE APPLIED RESIN TO THERMOSET SOLID RESINOUS BINDER TO UNITE THE CONDUCTORS AT THE CENTRAL PORTION AND TO RETAIN THE COMPACTED SIZE AND SHAPE, THE CONDUCTORS AT THE ENDS OF THE WINDING BEING RELATIVELY LOOSE AND UNBONDED, STRIPPING THE WRAPPING OF RESINOUS FILM, SHAPING THE ENDS OF THE WINDING INTO SUBSTANTIALLY THE SHAPE OF THE DESIRED END PORTIONS AND TIEING THE SHAPED END PORTIONS TO HOLD THE CONDUCTORS TOGETHER, THEREAFTER WRAPPING LAYERS OF A SHEET GROUND INSULATING MATERIAL ABOUT THE COIL FROM END TO END, IMPREGNATING THE WRAPPEDS COIL WITH A LIQUID, COMPLETELY REACTIVE, THERMOSETTABLE RESINOUS COMPOSITION, AND CURING THE APPLIED LIQUID RESINOUS COMPOSITION TO A SOLID RESIN, THE CURED LIQUID RESINOUS COMPOSITION BONDING TO THE GROUND INSULATING MATERIAL AND TO THE IMPREGNATED SLOT PORTION.