Compressed-gas circuit interrupters having improved arc-extinguishing means

Claim 1

A COMPRESSED-GAS CIRCUIT INTERRUPTER INCLUDING A METALLIC TANK, MEANS INCLUDING AN UPSTANDING INSULATING COLUMN FOR SUPPORTING SAID METALLIC TANK UP IN THE AIR ABOVE GROUND POTENTIAL, A PAIR OF TERMINAL BUSHINGS EXTENDING INTO SAID METALLIC TANK AND SUPPORTING RELATIVELY STATIONARY CONTACT STRUCTURES AT THEIR INTERIOR ENDS, EACH RELATIVELY STATIONARY CONTACT STRUCTURE INCLUDING MEANS DEFINING A RELATIVELY STATIONARY EXHAUST CHAMBER, THE PAIR OF TERMINAL BUSHINGS INCLUDING TUBULAR CONDUCTOR STUDS COMMUNICATING WITH SAID EXHAUST CHAMBERS, RELATIVELY MOVABLE BRIDGING CONTACT MEANS INTERECONNECTING SAID SPACED PAIR OF RELATIVELY STATIONARY CONTACT STRUCTURES, A TERMINAL RESISTANCE BUSHING EXTENDING THROUGH AN OUTER END OF EACH EXHAUST CHAMBER, A RESISTANCE MEANS SUPPORTED EXTERNALLY OF EACH EXHAUST CHAMBER AND HAVING ONE END THEREOF CONNECTED TO THE OUTER END OF THE RESPECTIVE TERMINAL RESISTANCE BUSHING, A RESISTANCE PROBE AFFIXED TO THE INNER END OF EACH TERMINAL RESISTANCE BUSHING SO THAT AN ESTABLISHED ARC MAY TRANSFER THERETO, AND ACTUATING MEANS EXTENDING UPWARDLY THROUGH THE HOLLOW INSULATING COLUMN FOR MECHANICALLY OPENING SAID RELATIVELY MOVABLE BRIDGING CONTACT MEANS.