Fuse block for either single-pole or double-pole power supply

Claim 1

A FUSE BLOCK FOR USE IN PANEL BOARDS HAVING A PAIR OF PARALLEL BUS BARS FOR BRANCH CIRCUIT SUPPLY COMPRISING: TWO COMPLEMENTARY MOULDED HALF SECTION OF INSULATOR MATERIAL SECURED TOGETHER LONGITUDINALLY IN COMPLEMENTARY RELATION TO PROVIDE AN ELONGATED INSULATOR HOUSING HAVING A PAIR OF BUS BAR PASSAGEWAYS EXTENDING TRANSVERSELY THERETHROUGH FOR MOUNTING OF SAID BLOCK CROSSWISE ON SAID PANEL BOARD BUS BARS; A PAIR OF SPACED ALIGNED FUSE RECEPTACLES SYMMETRICALLY LOCATED LONGITUDINALLY OF SAID BLOCK AND EXTENDING DOWNWARDLY THERIN FOR COMMUNICATION WITH A RESPECTIVE BUS BAR PASSAAGEWAY; A PAIR OF LOAD LEAD PASSAGEWAYS ONE EACH COMMUNICATING A RESPECTIVE FUSE RECEPTACLE WITH AN ADJACENT END OF SAID BLOCK; A CONDUCTIVE FUSE CONNECTOR RING LOCATED IN EACH FUSE RECEPTACLE FOR CONTACTING AND SECURING A FUSE THEREIN, A CONDUCTIVE FUSE RING LEAD MEMBER EXTENDING FROM SAID RING INTO SAID PASSAGEWAY FROM ONE END THEREOF; A LOAD TERMINAL ON EACH END OF SAID BLOCK; A TERMINAL LEAD MEMBER SECURED TO SAID LOAD TERMINAL PROJECTING INTO SAID PASSAGEWAY FROM THE OTHER END THEREOF; A KNOCK-OUT PORTION IN SAID BLOCK SUPERADJACENT EACH SAID PASSAGEWAY, SAID PORTIONS BEING READIALY FRACTURABLE FOR ACCESS TO SAID LEAD MEMBERS IN SAID PASSAGEWAYS; AND CONDUCTIVE PROBE CONNECTOR MEANS FOR EACH SAID PASSAGEWAY REMOVABLY INSERTABLE THEREIN TO CONTACT SAID RING AND TERMINAL LEAD MEMBERS THEREIN AND ESTABLISH A CONDUCTIVE PATH BETWEEN SAME, A YORKE MEMBER AND INSULATED MATERIAL SHAPED TO OVERLAY SAID FUSE RECEPTACLES AND OBSTRUCT REMOVAL OF FUSES THEREFROM, AND CARRYING SAID CONDUCTIVE PROBE MEANS THEREIN IN SPACED APART RELATION ORIENTED FOR INSERTION INTO SAID HOUSING AS AFORESAID.