Electrical insulating structure

Claim 1

ELECTRICAL INDUCTIVE APPARATUS COMPRISING: A CASING, ELECTRICAL WINDING MEANS, MAGNETIC CORE MEANS, SAID ELECTRICAL WINDING MEANS BEING DISPOSED IN INDUCTIVE RELATION WITH SAID MAGNETIC CORE MEANS TO FORM A CORE-WINDING ASSEMBLY, SAID CORE-WINDING ASSEMBLY BEING DISPOSED WITHIN SAID CASING, FLUID DIELECTRIC MEANS DISPOSED WITHIN SAID CASING, AT LEAST ONE ELECTRICAL INSULATING BARRIER STRUCTURE HAVING A PLURALITY OF DUCTS DISPOSED THEREIN, SAID AT LEAST ONE ELECTRICAL INSULATING STRUCTURE PROVIDING ELECTRICAL INSULATION BETWEEN PREDETERMINED COMPONENTS OF THE ELECTRICAL INDUCTIVE APPARATUS, SAID AT LEAST ONE ELECTRICAL INSULATING BARRIER STRUCTURE INCLUDING A PLURALITY OF CONTINUOUS TURNS FORMED OF A STRIP OF ELECTRICAL INSULATING SHEET MATERIAL HAVING PREDETERMINED LENGTH AND WIDTH DIMENSIONS, AND A PLURALITY OF STRIPS OF CORRUGATED ELECTRICAL INSULATING MATERIAL DISPOSED BETWEEN PREDETERMINED TURNS OF SAID STRIP OF ELECTRICAL INSULATING SHEET MATERIAL, SAID STRIPS OF CORRUGATED ELECTRICAL INSULATING MATERIAL HAVING PREDETERMINED LENGTH AND WIDTH DIMENSIONS, WITH ITS CORRUGATIONS EXTENDING ACROSS ITS WIDTH DIMENSION, THE LENGTH DIMENSION OF SAID STRIP OF ELECTRICAL INSULATING SHEET MATERIAL EXCEEDING THE LENGTH DIMENSION OF SAID PLURALITY OF STRIPS OF CORRUGATED ELECTRICAL INSULATING MATERIAL, SAID STRIPS OF CORRUGATED ELECTRICAL INSULATING MATERIAL BEING DISPOSED IN SPACED PARALLEL RELATION WITH ONE ANOTHER ACROSS THE WIDTH OF SAID ELECTRICAL INSULATING SHEET MATERIAL AND ORIENTED RELATIVE TO SAID STRIP OF ELECTRICAL INSULATING SHEET MATERIAL TO PROVIDE DUCTS IN SAID AT LEAST ONE ELECTRICAL INSULATING BARRIER STRUCTURE FOR CIRCULATION OF SAID FLUID DIELECTRIC MEANS.