EP 1205667 A3 20021120 - Gas friction pump
Title (en)
Gas friction pump
Title (de)
Gasreibungspumpe
Title (fr)
Pompe à effet visqueux
Publication
Application
Priority
DE 10056144 A 20001113
Abstract (en)
[origin: EP1205667A2] The gas friction pump comprises a housing (1) with a suction aperture (2) and a gas outlet aperture (3), with rotor (12) and stator (14) components in the housing for feed of gases and the production of a pressure state. On the side of the suction aperture within the housing, a sngle or multi-stage concave pump unit (20) is fitted, which has a gas-conveying structure. The gas-conveying structure is so formed that a gas delivery occurs in a radial direction. The rotor parts (21) of this pump unit and those (12) of the gas friction pump are located on the same rotor shaft (4).
IPC 1-7
IPC 8 full level
F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 29/40 (2006.01)
CPC (source: EP US)
F04D 17/168 (2013.01 - EP US); F04D 19/046 (2013.01 - EP US)
Citation (search report)
- [PXL] EP 1128069 A2 20010829 - PFEIFFER VACUUM GMBH [DE]
- [X] EP 1041287 A2 20001004 - SEIKO SEIKI KK [JP]
- [A] WO 9323672 A1 19931125 - LEYBOLD AG [DE], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 02 26 February 1999 (1999-02-26)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1205667 A2 20020515; EP 1205667 A3 20021120; EP 1205667 B1 20090114; DE 10056144 A1 20020523; DE 50114655 D1 20090305; JP 2002180989 A 20020626; JP 4183409 B2 20081119; US 2002064451 A1 20020530; US 6638010 B2 20031028
DOCDB simple family (application)
EP 01124630 A 20011016; DE 10056144 A 20001113; DE 50114655 T 20011016; JP 2001324973 A 20011023; US 5415401 A 20011113