EP 1021653 B1 20020807 - COOLED SCREW VACUUM PUMP
Title (en)
COOLED SCREW VACUUM PUMP
Title (de)
GEKÜHLTE SCHRAUBENVAKUUMPUMPE
Title (fr)
POMPE A VIDE A VIS REFROIDIE
Publication
Application
Priority
- DE 19745616 A 19971010
- EP 9803756 W 19980619
Abstract (en)
[origin: DE19745616A1] The cooled helical pump comprises a pump rotor (5) at one end of the shaft (6) carried in two bearings (7,8) in a finned housing (4). A pump (36) circulates cooling fluid through the space (31) from which the near bearing (7) is separated.
IPC 1-7
IPC 8 full level
F04C 18/16 (2006.01); F04C 23/00 (2006.01); F04C 25/02 (2006.01); F04C 29/00 (2006.01); F04C 29/04 (2006.01)
CPC (source: EP KR US)
F04C 18/16 (2013.01 - EP KR US); F04C 23/001 (2013.01 - EP US); F04C 29/04 (2013.01 - EP US); F04C 2240/51 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
DE 19745616 A1 19990415; DE 59805126 D1 20020912; EP 1021653 A1 20000726; EP 1021653 B1 20020807; JP 2001520352 A 20011030; JP 4225686 B2 20090218; KR 100517788 B1 20050930; KR 20010030993 A 20010416; TW 430722 B 20010421; US 6544020 B1 20030408; WO 9919630 A1 19990422
DOCDB simple family (application)
DE 19745616 A 19971010; DE 59805126 T 19980619; EP 9803756 W 19980619; EP 98937514 A 19980619; JP 2000516155 A 19980619; KR 20007003779 A 20000407; TW 87115991 A 19980925; US 52932900 A 20000410