Apparatus for fabricating and insulating lamination assemblies of a stator or rotor unit for use in an electrical device

Claim 1

AN ARBOR FOR THE ASSEMBLY OF A LAMINATED CORE OF AN ELECTICAL DEVICE,SAID CORE BEING OF A TYPE INCLUDING A PLURALITY OF LAMINA, EACH OF THE LAMINA HAVING A SOLID ANNULAR OUTER PERIPHERY AND AN ANNULAR OPENING DEFINED BY AN INNER PERIPHERY HAVING SLOTS OPENING INTO WINDOW OPENINGS PROVIDED IN THE LAMINA, THE ARBOR COMPRISING A SHAFT, A PLURALITY OF PINS POSITONED ABOUT THE SHAFT IN EQUAL SPACED RELATION, THE SHAFT HAVING A RELATIVELY GREATER LENGTH THAN SAID PINS, AND WEB PORTIONS EXTENDIGN RADIALLY FROM SAID PINS TO THE SHAFT, THE ANNULAR OPENING BEING ARRANGED TO SLIDABLY RECEIVE SAID SHAFT UPON A FIRST STAGE AXIAL ASSEMBLY OF THE LAMINA ON THE SHAFT WITH EACH OF THE WEB PORTIONS BEIG ARRANGED TO SLIDABLY FIT IN ONE OF SAID SLOTS CORRESPONDING THERETO UPON A SUCCEEDING ANGULAR AND AXIAL STAGE OF ASSEMBLY OF THE LAMINA ON THE SHAFT SO AS TO POSITION THE SLOTS THEREOF INTO COINCIDENCE WITH THE RADIALLY EXTENDING WEB PORTIONS, THE WINDOW OPENINGS OF THE LAMINA BEING SUFFICIENTLY LARGER THAN THE PINS AND SO RELATED TO THE SLOTS OPENING INTO THE WINDOW OPENINGS IN WHICH THE WEB PORTIONS ARE SLIDABLY FITTED THAT EACH OF THE PINS OF THE ARBOR ARE EFFECTIVELY MAINTAINED THEREBY IN A SPACED RELATION TO THE INNER SURFACES OF ONE OF SAID WINDOW OPENINGS CORRESPONDING THERETO SO AS TO PERMIT FILMS OF A DIELECTRIC MOLDING MATERIAL TO FLOW INTO THE WINDOW OPENINGS FOR DEPOSIT ON THE INNER SURFACES THEREOF.