EP 0711384 B1 19970514 - TWO-STAGE SLIDE VANE VACUUM PUMP
Title (en)
TWO-STAGE SLIDE VANE VACUUM PUMP
Title (de)
ZWEISTUFIGE DREHSCHIEBERVAKUUMPUMPE
Title (fr)
POMPE A VIDE A PALETTE A DEUX ETAGES
Publication
Application
Priority
- DE 4325286 A 19930728
- EP 9402425 W 19940722
Abstract (en)
[origin: WO9504221A1] The invention pertains to a slide vane vacuum pump (1) with a high vacuum stage (9, 22), with a fore-vacuum stage (8, 21), with a substantially cylindrical rotor (3) which has bearing and anchor segments (11 and 21, 22), a bearing segment (11) being situated between two anchor segments (21, 22) and the anchor segments (21, 22) having vane slots (25, 26), and with a roughly pot-shaped housing (2) which contains the pump chambers (8, 9) and whose base is designed as a bearing piece (13) with a passage (35) for the rotor drive. To provide for a simple manufacture, the invention proposes that the operation rotor (3) is of one piece, that the bearing segment (11) between the anchor segments (21, 22) is the only bearing segment and that both vane slots (25, 26) are open from their respective front ends.
IPC 1-7
IPC 8 full level
F01C 21/08 (2006.01); F04C 18/344 (2006.01); F04C 23/00 (2006.01); F04C 25/02 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01)
CPC (source: EP KR US)
F01C 21/08 (2013.01 - EP US); F04C 23/00 (2013.01 - KR); F04C 23/001 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
DE 4325286 A1 19950202; DE 59402769 D1 19970619; EP 0711384 A1 19960515; EP 0711384 B1 19970514; JP 3614434 B2 20050126; JP H09500703 A 19970121; KR 100335037 B1 20021127; KR 960704158 A 19960831; US 5879138 A 19990309; WO 9504221 A1 19950209
DOCDB simple family (application)
DE 4325286 A 19930728; DE 59402769 T 19940722; EP 9402425 W 19940722; EP 94925379 A 19940722; JP 50541795 A 19940722; KR 19960700472 A 19960127; US 58692696 A 19960129