EP 0640185 A1 19950301 - GAS FRICTION VACUUM PUMP.
Title (en)
GAS FRICTION VACUUM PUMP.
Title (de)
GASREIBUNGSVAKUUMPUMPE.
Title (fr)
POMPE A FRICTION A VIDE A GAZ.
Publication
Application
Priority
- DE 4216237 A 19920516
- EP 9300984 W 19930423
Abstract (en)
[origin: WO9323672A1] The invention relates to a gas friction vacuum pump (1) with at least two differently designed pump stages (3, 12; 26; 35), each comprising a rotor section (9, 27, 37) and a housing section (3, 29, 36); in order to be able to adapt the pump to various applications it is proposed to fit various input stages on the high-vacuum side and that the pump stages are releasably secured together.
IPC 1-7
IPC 8 full level
F04D 19/04 (2006.01); F04D 25/16 (2006.01)
CPC (source: EP US)
F04D 19/044 (2013.01 - EP); F04D 19/046 (2013.01 - EP US); F04D 25/16 (2013.01 - EP US)
Citation (search report)
See references of WO 9323672A1
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
WO 9323672 A1 19931125; DE 4216237 A1 19931118; DE 59300970 D1 19951221; EP 0640185 A1 19950301; EP 0640185 B1 19951115; JP H07506648 A 19950720; US 5553998 A 19960910
DOCDB simple family (application)
EP 9300984 W 19930423; DE 4216237 A 19920516; DE 59300970 T 19930423; EP 93911777 A 19930423; JP 51981093 A 19930423; US 33845294 A 19941116