EP 1128069 A3 20021106 - Gas friction pump
Title (en)
Gas friction pump
Title (de)
Gasreibungspumpe
Title (fr)
Pompe à effet visqueux
Publication
Application
Priority
DE 10008691 A 20000224
Abstract (en)
[origin: US2001018018A1] A gas friction pump including a housing having a suction opening and an exhaust opening, main rotor and stator components arranged in the housing and cooperating with each other for delivering gases and for producing a pressure difference, and an auxiliary pumping unit provided at a side of the suction opening and having a gas delivery structure that provides for gas delivery in a radial direction, with the auxiliary pumping unit being formed of at least one stage and having auxiliary rotor and stator components, with the auxiliary rotor components being supported on the shaft which supports the main rotor components.
IPC 1-7
IPC 8 full level
F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 25/16 (2006.01); F04D 29/44 (2006.01); F04D 29/54 (2006.01)
CPC (source: EP US)
F04D 17/168 (2013.01 - EP US); F04D 19/046 (2013.01 - EP US); F04D 29/321 (2013.01 - EP US)
Citation (search report)
- [XY] US 5927940 A 19990727 - LOTZ HEINRICH [DE]
- [Y] US 3734640 A 19730522 - DANIEL W
- [Y] US 1810083 A 19310616 - HARALD NORINDER ERNST
- [X] US 4668160 A 19870526 - MASE MASAHIRO [JP], et al
- [X] US 4978276 A 19901218 - KABELITZ HANS-PETER [DE], et al
- [X] US 5553998 A 19960910 - KABELITZ HANS-PETER [DE], et al
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 1128069 A2 20010829; EP 1128069 A3 20021106; EP 1128069 B1 20160330; DE 10008691 A1 20010830; DE 10008691 B4 20171026; JP 2001280289 A 20011010; JP 4907774 B2 20120404; US 2001018018 A1 20010830; US 6524060 B2 20030225
DOCDB simple family (application)
EP 01102552 A 20010206; DE 10008691 A 20000224; JP 2001036787 A 20010214; US 79245401 A 20010223