GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 337 350 patent documents

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219 431 new documents added

1 247 852 documents amended

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EP 1226597 B1 20040128 - COMPRESSED GAS-BLAST CIRCUIT BREAKER

Title (en)

COMPRESSED GAS-BLAST CIRCUIT BREAKER

Title (de)

DRUCKGAS-LEISTUNGSSCHALTER

Title (fr)

DISJONCTEUR A GAZ COMPRIME

Publication

EP 1226597 B1 20040128 (DE)

Application

EP 00984829 A 20001011

Priority

DE 0003616 W 20001011
DE 19953560 A 19991103

Abstract (en)

[origin: WO0133594A1] A hollow contact tube is provided in a compressed gas-blast circuit breaker in order to improve dielectric properties. The outlet (6) of said contact tube cooperates with a deflecting body (9) and is surrounded by a fixed substantially hollow cylindrical flow director (8).

IPC 1-7

H01H 33/57

IPC 8 full level

H01H 33/57 (2006.01)

CPC (source: EP US)

H01H 33/57 (2013.01 - EP US); H01H 2033/888 (2013.01 - EP US)

Designated contracting state (EPC)

CH DE FR GB IT LI SE

DOCDB simple family (publication)

WO 0133594 A1 20010510; DE 19953560 C1 20010607; DE 50005158 D1 20040304; EP 1226597 A1 20020731; EP 1226597 B1 20040128; US 6730871 B1 20040504

DOCDB simple family (application)

DE 0003616 W 20001011; DE 19953560 A 19991103; DE 50005158 T 20001011; EP 00984829 A 20001011; US 14827102 A 20020529