EP 0401741 B1 19930303 - TWO STAGE PRIMARY DRY PUMP
Title (en)
TWO STAGE PRIMARY DRY PUMP
Publication
Application
Priority
FR 8907392 A 19890605
Abstract (en)
[origin: EP0401741A1] Pump characterised in that it comprises in a single common stator a screw pump (10) on the low pressure side, an entrainment pump (20) on the high pressure side, a connecting pipe (30) providing the connection between the screw pump (10) and the entrainment pump (20). <IMAGE>
IPC 1-7
IPC 8 full level
F01C 1/16 (2006.01); F04B 23/14 (2006.01); F04C 18/16 (2006.01); F04C 23/00 (2006.01); F04C 25/02 (2006.01); F04C 28/02 (2006.01); F04D 17/00 (2006.01); F04D 17/16 (2006.01); F04D 19/04 (2006.01)
CPC (source: EP US)
F04C 23/005 (2013.01 - EP US); F04C 28/02 (2013.01 - EP US); F04D 17/168 (2013.01 - EP US); F04D 19/046 (2013.01 - EP); F04C 2220/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0401741 A1 19901212; EP 0401741 B1 19930303; AT E86364 T1 19930315; DE 69000990 D1 19930408; DE 69000990 T2 19930609; ES 2039997 T3 19931001; FR 2647853 A1 19901207; JP H0333492 A 19910213; RU 1771514 C 19921023; US 5040949 A 19910820
DOCDB simple family (application)
EP 90110602 A 19900605; AT 90110602 T 19900605; DE 69000990 T 19900605; ES 90110602 T 19900605; FR 8907392 A 19890605; JP 14604490 A 19900604; SU 4830083 A 19900604; US 53172690 A 19900601