Laminated core with bidirectional joints

Claim 1

A MAGNETIC CORE STRUCTURE FOR TRANSFORMERS COMPRISING A PLURALITY OF STACKED LAYERS OF LAMINATIONS FORMED FROM MAGNETIC STRIP MATERIAL HAVING A PREFERRED DIRECTION OF MAGNETIC ORIENTATION, SAID PLURALITY OF STACKED LAYERS CONSISTING OF AN ALTERNATE ARRANGEMENT OF FIRST AND SECOND CORE UNITS IN STACKED RELATIONSHIP, SAID FIRST CORE UNITS COMPRISING AT LEACT TWO LEG MEMBERS AND AT LEAST TWO INTERCONNECTING YOKE MEMBERS OF UNIDIRECTIONAL MAGNETIC STRIP MATERIAL DIGONALLY JOINED TO FORM A SUBSTANTIALLY RECTANGULAR CORE AND SAID SECOND CORE UNITS COMPRISING AT LEAST TWO LEG MEMBERS AND AT LEAST TWO YOKE MEMBERS OF UNDIRECTIONAL MAGNETIC STRIP AND SUBSTANTIALLY RECTANGULAR JOINT SECTIONS OF BIDIRECTIONAL MAGNETIC STRIP MATERIAL INTERCONNECTING SAID LEG AND YOKE MEMBERS TO FORM A SUBSTANTIALLY RECTANGULAR CORE, SAID MAGNETIC CORE STRUCTURE HAVING AT LEAST ONE SUBSTANTIALLY RECTANGULAR WINDOW THEREIN WITH THE PREFERRED DIRECTION OF MAGNETIC ORIENTATION IN EACH OF SAID UNDIRECTIONAL LEG AND YOKE MEMBERS BEING SUBSTANTIALLY PARALLEL TO THE SIDE OF THE MEMBER WHICH DEFINES A SIDE OF SAID WINDOW, SAID BIDIRECTIONAL JOINT SECTIONS HAVING SUBSTANTIALLY TRANSVERSE DIRECTIONS OF MAGNETIC ORIENTATION PARALLEL TO THE DIRECTIONS OF MAGNETIC ORIENTATION OF SAID LEG AND YOKE MEMBERS, RESPECTIVELY, SAID FIRST AND SECOND CORE UNITS EACH HAVING AT LEAST ONE INTERMEDIATE LEG MEMBER SO THAT SAID MAGNETIC CORE STRUCTURE HAS AT LEAST TWO SUBSTANTIALLY RECTANGULAR WINDOWS THEREIN, THE INTERMEDIATE LEG MEMBER IN SAID FIRST CORE UNIT HAVING A SYMMETRICAL POINT AT EITHER END THEREOF CONNECTED TO SUBSTANTIALLY THE CENTER OF THE RESPECTIVE YOKE MEMBERS OF SAID FIRST CORE UNIT AND THE INTERMEDIATE LEG MEMBER IN SAID SECOND CORE UNIT BEING JOINED TO THE YOKE MEMBERS OF SAID UNIT BY MEANS OF SUBSTANTIALLY RECTANGULAR JOINT SECTIONS OF BIDIRECTIONAL MAGNETIC STRIP MATERIAL.