EP 0352688 B1 19950705 - Vacuum pump.
Title (en)
Vacuum pump.
Title (de)
Vakuumpumpe.
Title (fr)
Pompe à vide.
Publication
Application
Priority
FR 8810120 A 19880727
Abstract (en)
[origin: US4929151A] A molecular or turbomolecular type of pump comprising a stator (2) and a rotor (3) rotated by a motor (7), the stator having a first zone overlying the rotor and in which gas is admitted, and a second zone adjacent to the drive motor and cooled by a flow of fluid (8), the pump being characterized in that the first zone is provided with heater (12) for maintaining the temperature of the first zone above the condensation threshold of the gas being admitted, with the first and second zones being separated from each other by a thermal impedance element (13).
IPC 1-7
IPC 8 full level
F04D 19/04 (2006.01); F04D 29/58 (2006.01)
CPC (source: EP US)
F04D 19/044 (2013.01 - EP US); F04D 25/06 (2013.01 - EP); F04D 29/5806 (2013.01 - EP US); F04D 29/584 (2013.01 - EP US); F04D 29/5853 (2013.01 - EP US); F05D 2260/607 (2013.01 - EP US)
Citation (examination)
Novembre 1981
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0352688 A1 19900131; EP 0352688 B1 19950705; AT E124757 T1 19950715; DE 68923330 D1 19950810; DE 68923330 T2 19951123; ES 2074063 T3 19950901; FR 2634829 A1 19900202; FR 2634829 B1 19900914; JP H0270994 A 19900309; JP H0772558 B2 19950802; US 4929151 A 19900529
DOCDB simple family (application)
EP 89113558 A 19890724; AT 89113558 T 19890724; DE 68923330 T 19890724; ES 89113558 T 19890724; FR 8810120 A 19880727; JP 18869789 A 19890720; US 36940189 A 19890621