EP 0075668 B1 19870107 - COMPRESSED-GAS CIRCUIT BREAKER
Title (en)
COMPRESSED-GAS CIRCUIT BREAKER
Publication
Application
Priority
CH 629781 A 19810930
Abstract (en)
[origin: US4471187A] A gas-blast switch or circuit-interrupter contains a fixed set of contacts and a movable set of contacts. Each contact set possesses an arc contact and a rated current contact coaxially surrounding the related arc contact. Operatively associated and co-movable with the movable contact set is a blast nozzle which surrounds the arc contact of such movable contact set. In the cut-on position the blast nozzle is closed by the fixed arc contact and is operatively connected with a pressure chamber which can be pressurized during a cut-off stroke. At the outflow end of at least one of the arc contacts there are arranged means in order to axially and outwardly deflect the switching gas flowing-out of such end during the cut-off stroke. The deflecting means comprise deflection hoods of essentially cup-shaped configuration which are open at their ends confronting one another and possess a base or floor portion containing a half toroidally shaped deflection surface at the peripheral edge of which there merges an essentially cylindrical portion or section. Each such cylindrical portion carries a plurality of tongues which protrude inwardly from its inner wall and which are arranged at a substantially uniform circumferential spacing from one another.
IPC 1-7
IPC 8 full level
H01H 33/91 (2006.01); H01H 33/915 (2006.01)
CPC (source: EP US)
H01H 33/91 (2013.01 - EP US); H01H 2033/888 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE GB LI
DOCDB simple family (publication)
EP 0075668 A2 19830406; EP 0075668 A3 19850109; EP 0075668 B1 19870107; DE 3275041 D1 19870212; JP H0459726 B2 19920924; JP S5871523 A 19830428; US 4471187 A 19840911
DOCDB simple family (application)
EP 82106449 A 19820717; DE 3275041 T 19820717; JP 17249182 A 19820930; US 42237282 A 19820923