EP 0855517 A3 19990707 - Vacuum pump
Title (en)
Vacuum pump
Title (de)
Vakuumpumpe
Title (fr)
Pompe à vide
Publication
Application
Priority
DE 19702456 A 19970124
Abstract (en)
[origin: EP0855517A2] The pump has a high vacuum section (1), a pre-vacuum section (2), and a drive and bearing section (3). The three sections are formed and positioned relative to each other, so that they can be subjected to different thermal loads. At least two of the sections are thermally isolated from each other. Isolation is achieved by free turnings (15,16,17) between components, so that contact between them is reduced to a minimum, or by parts (18,19,20) of low heat-conductivity, which form the required contact faces. The high vacuum section has a cooler (21) or heater (23), and the drive and bearing section has a cooler (22) or a heater (24).
IPC 1-7
IPC 8 full level
F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 29/58 (2006.01)
CPC (source: EP)
F04D 19/04 (2013.01); F04D 25/06 (2013.01); F04D 29/5806 (2013.01); F04D 29/584 (2013.01); F04D 29/5853 (2013.01); F04D 29/056 (2013.01); F05D 2260/607 (2013.01)
Citation (search report)
- [XAY] WO 9400694 A1 19940106 - LEYBOLD AG [DE], et al
- [Y] DE 4410903 A1 19951005 - LEYBOLD AG [DE]
- [A] EP 0451708 A2 19911016 - HITACHI LTD [JP]
- [AD] EP 0352688 A1 19900131 - CIT ALCATEL [FR]
- [A] EP 0197238 A2 19861015 - LEYBOLD HERAEUS GMBH & CO KG [DE]
- [A] DE 2757599 A1 19790628 - KERNFORSCHUNGSZ KARLSRUHE
- [A] CH 465124 A 19681115 - MOTEURS D AVIAT ET COMMISSARIA [FR]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0855517 A2 19980729; EP 0855517 A3 19990707; EP 0855517 B1 20031008; AT E251722 T1 20031015; DE 19702456 A1 19980730; DE 19702456 B4 20060119; DE 59809829 D1 20031113; JP 4235273 B2 20090311; JP H10205486 A 19980804
DOCDB simple family (application)
EP 98100372 A 19980112; AT 98100372 T 19980112; DE 19702456 A 19970124; DE 59809829 T 19980112; JP 35053397 A 19971219