Sealed arc chutes for an auxiliary interrupting blade of a circuit interrupter

Claim 1

AN ARC CHUTE FOR A LOAD INTERRUPTER SWITCH HAVING AN AUXILIARY SWITCH BLADE, SAID ARC CHUTE COMPRISING FIRST AND SECOND ARC CHUTE SIDEWALLS PARALLEL TO EACH OTHER, EACH OF SAID SIDEWALLS HAVING AT LEAST ONE RECESS ALONG THE SURFACE ADJACENT THE OPPOSITE SIDEWALL AND BEING POSITIONED IN SPATIAL ALIGNMENT WITH ONE ANOTHER TO FORM A NARROW PASSAGEWAY FOR RECEIVING SAID AUXILIARY SWITCH BLADE, THE REMAINING PORTION OF SAID FIRST AND SECOND SIDEWALL ADJACENT SURFACES BEING POSITIONED TO ENGAGE EACH OTHER; SEALING MEANS BETWEEN SAID ENGAGING SURFACES FOR CREATING A GASTIGHT SEAL ALONG SAID ENGAGING SURFACES TO LIMIT THE EXIT PATH OF GASES FORMED DURING THE OPENING OPERATION TO SAID NARROW PASSAGEWAY, SAID SEALING MEANS INCLUDING A GASKET MEANS FORMED OF AN INSULATING MATERIAL, EACH OF SAID ENGAGING SIDEWALL SURFACES HAVING COOPERATING GROOVES ADJACENT THE PERIMETER OF SAID SIDEWALLS, SAID GASKET BEING INSERTED INTO BOTH OF SAID GROOVES TO CREATE A GAS TIGHT SEAL ALONG THE ARC CHUTE MEANS.