EP 2835536 B1 20181128 - Vacuum pump stage with special surface roughness yielding a lower gas friction
Title (en)
Vacuum pump stage with special surface roughness yielding a lower gas friction
Title (de)
Vakuumpumpstufe mit besonderer Oberflächenrauigkeit zur Reduzierung der Gasreibung
Title (fr)
Étage de pompe à vide avec rugosité de surface particulière engendrant une réduction du frottement gazeux
Publication
Application
Priority
DE 102013108482 A 20130806
IPC 8 full level
F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 29/16 (2006.01); F04D 29/40 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP)
F04D 17/168 (2013.01); F04D 23/008 (2013.01); F04D 29/403 (2013.01); F04D 29/681 (2013.01); F05D 2300/516 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2835536 A2 20150211; EP 2835536 A3 20150506; EP 2835536 B1 20181128; DE 102013108482 A1 20150212; EP 3088743 A1 20161102; EP 3088743 B1 20191225; EP 3104014 A1 20161214; EP 3104014 B1 20210929
DOCDB simple family (application)
EP 14176840 A 20140714; DE 102013108482 A 20130806; EP 16171240 A 20140714; EP 16171251 A 20140714