EP 1249614 B1 20091104 - Gas friction pump with an additional gas inlet
Title (en)
Gas friction pump with an additional gas inlet
Title (de)
Gasreibungspumpe mit zusätzlichem Gaseinlass
Title (fr)
Pompe à effet visqueux avec une entrée de gaz additionnelle
Publication
Application
Priority
DE 10111603 A 20010310
Abstract (en)
[origin: US2002127094A1] A gas friction pump, including a housing having a suction opening, a gas outlet opening, and a plurality of rotatable and stationary components arranged in the housing and having a pump-active structure for pumping gases and maintaining a pressure ratio, and an additional gas inlet formed as a longitudinal opening extending, in a longitudinal direction thereof, over a portion of an outer edge of a rotatable component.
IPC 8 full level
F04D 19/04 (2006.01); F04D 29/42 (2006.01); F04D 29/54 (2006.01)
CPC (source: EP US)
F04D 19/042 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
US 2002127094 A1 20020912; US 6644912 B2 20031111; DE 10111603 A1 20020912; DE 50213975 D1 20091217; EP 1249614 A1 20021016; EP 1249614 B1 20091104; JP 2002295397 A 20021009; JP 4512305 B2 20100728
DOCDB simple family (application)
US 8667902 A 20020301; DE 10111603 A 20010310; DE 50213975 T 20020207; EP 02002738 A 20020207; JP 2002029152 A 20020206