Method of encapsulating and impregnating electrical capacitors

Claim 1

IN A METHOD OF ASSEMBLING INTO A CAPACITOR, A CONVOLUTELY WOUND CAPACITOR UNIT THE INNER SURFACES OF WHICH DEFINE AN AXIAL PASSAGE THEREIN, THE SEQUENTIAL STEPS COMPRISING SUBSTANTIALLY FILLING SAID PASSAGE WITH A RELATIVELY NON-YIELDABLE INSERT OF GREATER LENGTH THAN SAID PASSAGE, SLIDING A METALLIC TUBULAR ELEMENT OVER AN EXTENDING END OF SAID INSERT INTO A POSITION ADJACENT AN END OF SAID UNIT AND INTO REGISTRY WITH SAID PASSAGE, PRESSURE MOLDING A RESINOUS CASING AROUND SAID UNIT AND AT LEAST A PORTION OF SAID TUBULAR ELEMENT, REMOVING SAID INSERT TO PROVIDE AN UNFOULED PASSAGE THROUGH SAID TUBULAR ELEMENT DISPOSED IN ALIGNEMENT WITH THE AXIAL PASSAGE IN SAID ENCASED CAPACITOR UNIT, AND THEREAFTER INTRODUCING IMPREGNANT THROUGH SAID TUBULAR ELEMENT AND INTO SAID PASSAGE OF SAID ENCASED CAPACITOR UNIT.