Patent ID: 9362070
Filing Date: 2016-06-07
CPC Classification: H01H

Claim Text:
1. An arc extinguishing chamber of an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, when separated, form an arc therebetween, said arc formation chamber communicating with the inlet of an arc extinguishing chamber; and a balancing wall substantially solid at least at a central part, said balancing wall being located downstream from the arc extinguishing chamber and being formed and arranged with respect to the arc extinguishing chamber in such a way as to slow down the exhaust flow of exhaust gases on a side of the arc extinguishing chamber situated opposite the stationary contact, the exhaust gases being stopped by the central part of the balancing wall and escaping via the edges of the wall, wherein said central part of the balancing wall is a solid central part having a variable width being maximum on the side of the arc extinguishing chamber where the gases flow first, and being progressively reduced as an opposite side of said chamber is approached.