EP 0667633 B1 19991006 - Autopneumatic circuit breaker with pneumatically locked semi-mobile piston
Title (en)
Autopneumatic circuit breaker with pneumatically locked semi-mobile piston
Title (de)
Selbstbeblasener Leistungsschalter mit pneumatisch festlegbarem halbbeweglichem Kolben
Title (fr)
Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement
Publication
Application
Priority
FR 9400762 A 19940125
Abstract (en)
[origin: EP0667633A1] The circuit breaker is housed in a porcelain container (1) and filled with dielectric gas. The static arc contact (3A) contacts an arc contact (7A) on a moving tube. An arc suppression protrusion (10) is fixed to the top of the tube and forms a first extinction chamber (17) with the contact plate (9). A one-way valve (9A) in the contact plate wall leads to a second extinction chamber (18). A piston (12) slides in the chamber, forming the back wall (11) of the chamber and has a valve (11A). There is a restraining spring (15) at the back of the piston. During the first opening period, the piston remains fixed in position by the spring, removing gas from the second extinction chamber. Once the piston reaches the first end wall, it moves back with the contact breaker, forming a two stage mechanism.
IPC 1-7
IPC 8 full level
H01H 33/90 (2006.01); H01H 33/915 (2006.01)
CPC (source: EP US)
H01H 33/905 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI PT SE
DOCDB simple family (publication)
EP 0667633 A1 19950816; EP 0667633 B1 19991006; AT E185446 T1 19991015; AU 1133095 A 19950803; AU 687947 B2 19980305; BR 9500295 A 19951017; CN 1071483 C 20010919; CN 1111031 A 19951101; DE 69512541 D1 19991111; DE 69512541 T2 20000504; ES 2136810 T3 19991201; FR 2715499 A1 19950728; FR 2715499 B1 19960315; PL 175980 B1 19990331; PL 306939 A1 19950807; US 5567923 A 19961022; ZA 95550 B 19951114
DOCDB simple family (application)
EP 95400111 A 19950119; AT 95400111 T 19950119; AU 1133095 A 19950123; BR 9500295 A 19950124; CN 95101358 A 19950124; DE 69512541 T 19950119; ES 95400111 T 19950119; FR 9400762 A 19940125; PL 30693995 A 19950124; US 37139495 A 19950111; ZA 95550 A 19950124