Magnetic convergence assembly and electron beam shielding means for color cathode ray tubes

Claim 1

IN A CATHODE RAY TUBE HAVING A PLURAL GUN STRUCTURE FORMED TO PROJECT A PLURALITY OF ELECTRON BEAMS THROUGH AN APERTURED MASK ONTO AN ELECTRON RESPONSIVE SCREEN ADJACENT THERETO, A SELF-JIGGING MAGNETIC CONVERGENCE ASSEMBLY ADAPTED FOR COMPATIBLE JUNCTURE WITH SNUBBER MEANS AND THE TERMINAL ELECTRODES OF THE GUN STRUCTURE COMPRISING: A BOTTOM WAFER-LIKE SUPPORT MEMBER HAVING A PLURALITY OF BEAM APERTURES AND A FIRST SET AND A SECOND SET OF BOTTOM SLOTS SPACEDLY DISPOSED THEREIN; A PLURALITY OF MAGNETIC FIELD SHIELDS EACH HAVING A PLURALITY OF UPPER TABS AND LOWER TABS INTEGRAL TO THE UPPER AND LOWER EDGES THEREOF, SAID SHIELDS BEING IN SUBSTANTIALLY UPSTANDING RELATIONSHIP TO SAID BOTTOM SUPPORT MEMBER WITH SAID LOWER TABS MATING WITH SAID FIRST SET OF BOTTOM SLOTS; A PLURALITY OF PAIRS OF MAGNETIC POLE PIECES EACH HAVING A PLURALITY OF TOP TABS AND BOTTOM TABS INTEGRAL TO THE TOP AND BOTTOM EDGES THEREOF, SAID POLE PIECES BEING IN SUBSTANTIALLY UPSTANDING RELATIONSHIP TO SAID BOTTOM SUPPORT MEMBER WITH SAID BOTTOM TABS MATING WITH SAID SECOND SET OF BOTTOM SLOTS; AND A TOP WAFER-LIKE SUPPORT MEMBER HAVING A PLURALITY OF BEAM APERTURES AND A FIRST SET AND A SECOND SET OF TOP SLOTS SPACEDLY DISPOSED THEREIN, SAID TOP MEMBER BEING ORIENTED TO FACILITATE THE MATING OF SAID UPPER TABS OF SAID MAGNETIC FIELD SHIELDS WITH SAID FIRST SET OF TOP SLOTS AND THE MATING OF SAID TOP TABS OF SAID MAGNETIC POLE PIECES WITH SAID SECOND SET OF TOP SLOTS TO FORM AN INTEGRATED CONVERGENCE ASSEMBLY WHEREIN THE INDIVIDUAL BEAM APERTURES IN SAID TOP AND BOTTOM SUPPORT MEMBERS ARE IN ALIGNMENT WITH RESPECTIVE PAIRS OF SAID POLE PIECES POSITIONED THEREBETWEEN TO PROVIDE UNRESTRICTED PASSAGES FOR SAID ELECTRON BEAMS THERETHROUGH, SAID INDIVIDUAL PAIRS OF POLE PIECES BEING SPACEDLY SEPARATED BY SAID MAGNETIC FIELD SHIELDS TO MINIMIZE MAGNETIC INTERACTION BETWEEN SAID BEAMS.