Panelboard and circuit breaker

Claim 1

AN ELECTRIC CIRCUIT CONTROL DEVICE PANEL BOARD COMPRISING A GENERALLY PLANAR BASE, TWO BUS BARS SUPPORTED IN INSULATED RELATION ON SAID BASE AND CONNECTABLE TO DIFFERENT SOURCES OF ELECTRIC ENERGY, A PLURALITY OF ELECTRICAL BLADE CONTACTS SUPPORTED ON SAID BUS BARS AND DISPOSED IN PARALLEL CENTRAL ALIGNMENT ON SAID PANEL BOARD GENERALLY NORMAL TO THE PLANE OF SAID BASE, A PLURALITY OF UPSTANDING SECONDARY ELECTRICAL CONTACTS SUPPORTED ON SAID BUS BARS AND LATERALLY DISPOSED RELATIVE TO SAID BLADE CONTACTS IN REGULARLY SPACED ALIGNMENT, AND A PLURALITY OF CIRCUIT BREAKERS ENCLOSED IN INSULATING CASINGS HAVING SIDE WALLS OF SUBSTANTIALLY THE SAME OUTSIDE DIMENSIONS AND INCLUDING AT LEAST ONE TWO-POLE CIRCUIT BREAKER HAVING FIRST RESILIENT CONTACT MEANS DISPOSED NEAR ONE END OF THE BOTTOM WALL OF ITS INSULATING CASING TO RECEIVE A BLADE CONTACT SUPPORTED IN ELECTRICAL CONNECTION WITH ONE OF SAID BUS BARS AND HAVING SECOND RESILIENT CONTACT MEANS DISPOSED WITHIN THE BOTTOM WALL OF ITS INSULATING CASING TO RECEIVE AN UPSTANDING SECONDARY CONTACT IN ELECTRICAL CONNECTION WITH THE OTHER OF SAID BUS BARS.