Unitary lead support molding including an integral chamber for puffer, buffer assembly

Claim 1

IN CIRCUIT INTERRUPTERS HAVING A CONTACT PAIR COMPRISING A FIRST RELATIVELY FIXED AND A SECOND RELATIVELY MOVABLE TOOPERATING CONTACT, WHEREIN SAID SECOND CONTACT IS MOVABLE BETWEEN AN ENGAGED AND A TRIPPED POSITION, THE IMPROVEMENT COMPRISING A UNITARY MEMBER HAVING MEANS FOR MOUNTING SAID MEMBER TO A RIGID SUPPORT, SAID UNITARY MEMBER HAVING A PAIR OF FIRST AND SECOND APERTURES FOR RECEIVING FIRST TERMINAL LEADS; PUFFER MEANS INCLUDING AN ENCLOSURE FORMED WITHIN SAID UNITARY MEMBER INTERMEDIATE SAID FIRST AND SECOND APERTURES FOR GENERATING A GASEOUS BLAST IN THE REGION OF SAID CONTACT PAIRS TO EXTINGUISH AN ELECTRIC ARC DRAWN BETWEEN SAID COOPERATING CONTACTS UPON SEPARATION THEREOF, SAID PUFFER MEANS BEING CONTROLLED BY AND HAVING MEANS MECHANICALLY LINKED WITH SAID RELATIVELY MOVABLE COOPERATING CONTACT, SAID PUFFER MEANS INCLUDIONG BUFFER MEANS FOR IMPEDING THE MOVEMENT OF THE SECOND CONTACT A PREDETERMINED TIME BEFORE SAID SECOND CONTACT REACHES ITS TRIPPED POSITION; SAID UNITARY MEMBER HAVING A CHAMBER FOR MOUNTING SAID PUFFER MEANS, SAID CHAMBER BEIONG THE ENCLOSURE FOR THE PUFFER MEANS, SAID PUFFER MEANS FURTHER COMPRISING A PISTON MOUNTED FOR RECIPROCAL MOVEMENT IN SAID ENCLOSURE; SAID UNITARY MEMBER HAVING A THIRD APERTURE PROVIDING A PASSAGEWAY FROM SAID ENCLOSURE TO THE EXTERIOR OF SAID UNITARY MEMBER; A PISTON ROD BEING POSITIONED BY SAID THIRD APERTURE AND BEING MOVABLE RELATIVE TO SAID UNITARY MEMBER; SAID PISTON ROD HAVING A FIRST END LINKED TO SAID PISTON AND A SECOND END LINKED TO SAID SECOND CONTACT, SAID PISTON ROD BEING A HOLLOW TUBULAR MEMBER HAVING AN APERTURE POSITIONED ALONG ITS SURFACE ADJACENT THE FIRST END OF SAID PISTON ROD; A NOZZLE HAVING A CHAMBER EXTENDING THERETHROUGH MOUNTED TO SAID PISTON ROD SECOND END, SAID NOZZLE CHAMBER COMMUNICATING WITH SAID HOLLOW TUBULAR MEMBER AND SAID PISTON ROD APERTURE, SAID HOLLOW TUBULAR MEMBER AND SAID NOZZLE CHAMBER COOPERATING TO DIRECT THE GAS BLAST OF SAID PUFFER MEANS IN THE REGION OF SAID COOPERATING CONTACTS WHEN SAID SECOND CONTACT IS MOVED TOWARD ITS TRIPPED POSITION.