EP 0728948 B1 19991208 - Scroll vacuum pump
Title (en)
Scroll vacuum pump
Title (de)
Spiralvakuumpumpe
Title (fr)
Pompe à vide à spirales
Publication
Application
Priority
FR 9502209 A 19950224
Abstract (en)
[origin: EP0728947A1] The pump comprises a fixed housing (10) containing at least one fixed disc (13,14) with a spiral projection (23,24,25) on one surface, and a moving disc (30) facing the fixed disc and having at least one spiral projection (33,34,35) facing towards the fixed disc. The moving disc is connected to a circular motion mechanism comprising a drive (20) and hollow shaft (50) which is situated centrally relative to the housing (10). A second shaft (40) is connected at one end to the moving disc and is supported by the hollow shaft bearing (47). The pump has a circular motion limiter in the form of a metal bellows (60) with one end connected to the fixed housing and the other to the central shaft (40). In one variant of the design the moving disc can comprise two plates (31,32) with spiral projections facing towards the fixed disc and a flange (14) situated opposite it.
IPC 1-7
IPC 8 full level
F04C 25/02 (2006.01); F01C 17/00 (2006.01); F01C 21/10 (2006.01); F04C 18/02 (2006.01); F04C 29/00 (2006.01)
CPC (source: EP KR US)
F01C 17/00 (2013.01 - EP US); F01C 21/102 (2013.01 - EP US); F04C 18/02 (2013.01 - KR); F04C 18/0215 (2013.01 - EP US); F04C 18/0223 (2013.01 - EP US); F04C 29/0057 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0728948 A1 19960828; EP 0728948 B1 19991208; DE 69605461 D1 20000113; DE 69605461 T2 20000727; DE 69605462 D1 20000113; DE 69605462 T2 20000727; EP 0728947 A1 19960828; EP 0728947 B1 19991208; ES 2140039 T3 20000216; ES 2140040 T3 20000216; FR 2731051 A1 19960830; FR 2731051 B1 19970430; JP 3914974 B2 20070516; JP 4088340 B2 20080521; JP H11500804 A 19990119; JP H11504692 A 19990427; KR 100383695 B1 20040520; KR 100383696 B1 20040520; KR 19980702432 A 19980715; KR 19980702456 A 19980715; TW 311162 B 19970721; TW 314576 B 19970901; US 5951268 A 19990914; US 6022202 A 20000208; WO 9626366 A1 19960829; WO 9626367 A1 19960829
DOCDB simple family (application)
EP 96400386 A 19960223; DE 69605461 T 19960223; DE 69605462 T 19960223; EP 96400385 A 19960223; ES 96400385 T 19960223; ES 96400386 T 19960223; FR 9502209 A 19950224; FR 9600289 W 19960223; FR 9600290 W 19960223; JP 52546196 A 19960223; JP 52546296 A 19960223; KR 19970705831 A 19970822; KR 19970705856 A 19970823; TW 85102063 A 19960223; TW 85102064 A 19960223; US 89463797 A 19970825; US 89463897 A 19970825