Patent ID: 8247727

Claim:
An arc chamber comprising: a slot motor comprising a core and a housing having an opening therein; an arc chute; and a number of gassing inserts disposed in the opening of the housing, wherein the number of gassing inserts and the housing are structured to form a number of gas flow circulation paths, and wherein the number of gas flow circulation paths are structured to drive an arc into the arc chute, wherein the number of gassing inserts include two gassing inserts, wherein the number of gas flow circulation paths include a first gas flow circulation path and a second gas flow circulation path, wherein the housing and the two gassing inserts include a first end disposed away from the arc chute and an opposite second end disposed toward the arc chute, and wherein each of the first and second gas flow circulation paths circulates back toward the arc chute from a vent on a corresponding one of the two gassing inserts, the vent being located between the first end and the opposite second end of the corresponding one of the two gassing inserts.