EP 1240433 B1 20060719 - Dry compressing vacuum pump having a gas ballast device
Title (en)
Dry compressing vacuum pump having a gas ballast device
Title (de)
Trockenverdichtende Vakuumpumpe mit Gasballasteinrichtung
Title (fr)
Pompe à vide à compression sèche comportant un dispositif de ballast à gaz
Publication
Application
Priority
- DE 19962445 A 19991222
- EP 0008201 W 20000823
Abstract (en)
[origin: WO0146592A1] The invention relates to a dry compressing vacuum pump (1) having a continuous or graduated inner compression and comprising a gas ballast device (8) having an isolating valve (11); the gas ballast device (8) also comprises a non-return valve (12), which prevents the escape of gases from the pump (1) through the gas ballast device (8) to the outside.
IPC 8 full level
F04B 25/00 (2006.01); F04B 37/14 (2006.01); F04B 37/20 (2006.01); F04C 18/16 (2006.01); F04C 25/00 (2006.01); F04C 25/02 (2006.01); F04C 28/28 (2006.01)
CPC (source: EP US)
F04B 25/005 (2013.01 - EP US); F04B 37/14 (2013.01 - EP US); F04B 37/20 (2013.01 - EP US); F04C 28/28 (2013.01 - EP US); F04C 18/16 (2013.01 - EP US); F04C 2220/12 (2013.01 - EP US); F04C 2220/50 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0146592 A1 20010628; AU 6443100 A 20010703; DE 19962445 A1 20010628; DE 50013201 D1 20060831; EP 1240433 A1 20020918; EP 1240433 B1 20060719; JP 2003518228 A 20030603; TW 482875 B 20020411; US 6776588 B1 20040817
DOCDB simple family (application)
EP 0008201 W 20000823; AU 6443100 A 20000823; DE 19962445 A 19991222; DE 50013201 T 20000823; EP 00951529 A 20000823; JP 2001547466 A 20000823; TW 89121660 A 20001017; US 16828902 A 20020617