EP 0396008 A3 19901227 - VACUUM PUMP WITH SUCTION FILTER
Title (en)
VACUUM PUMP WITH SUCTION FILTER
Publication
Application
Priority
DE 8905452 U 19890429
Abstract (en)
[origin: EP0396008A2] The invention relates to a vacuum pump (1) which has a filter in the intake region; in order to precipitate particles down to a particle size of 1 mu m without considerably reducing the conductance, the filter is a nonwoven fabric containing stainless steel fibres; expediently, the filter is a sintered metal nonwoven fabric having a density of approximately 800 to 1000 g/m<2> and a porosity of more than 90 per cent. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 53/00 (2006.01); B01D 29/01 (2006.01); B01D 35/02 (2006.01); B01D 39/20 (2006.01); B01D 46/10 (2006.01); B01D 46/30 (2006.01); F04B 39/16 (2006.01); F04C 29/00 (2006.01); F04D 29/70 (2006.01)
CPC (source: EP)
F04C 29/00 (2013.01); F04D 29/701 (2013.01)
Citation (search report)
- [A] DE 2720278 A1 19781109 - NIPPON SEISEN CO LTD
- [A] US 2846139 A 19580805 - BLOUNT JOSEPH W, et al
- [A] EP 0173787 A2 19860312 - LEYBOLD HERAEUS GMBH & CO KG [DE]
- [A] DE 2713290 A1 19780511 - TEXTRON INC
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
DE 8905452 U1 19890810; DE 59010846 D1 19980917; EP 0396008 A2 19901107; EP 0396008 A3 19901227; EP 0396008 B1 19980812; JP H0361678 A 19910318
DOCDB simple family (application)
DE 8905452 U 19890429; DE 59010846 T 19900425; EP 90107820 A 19900425; JP 11072390 A 19900427