EP 2310684 B1 20181107 - VACUUM PUMP IN PARTICULAR ROOTS TYPE PUMP
Title (en)
VACUUM PUMP IN PARTICULAR ROOTS TYPE PUMP
Title (de)
VAKUUMPUMPE, INSBESONDERE WÄLZKOLBENPUMPE
Title (fr)
POMPE À VIDE, NOTAMMENT POMPE DE ROOTS
Publication
Application
Priority
- EP 2009057192 W 20090610
- DE 102008034073 A 20080722
- DE 102008047712 A 20080918
Abstract (en)
[origin: WO2010009939A1] The invention relates to a vacuum pump, in particular, a Roots type pump, comprising a lobe (12) arranged in a suction chamber (10). The pressure side (30) of the pump is connected to the suction side (20) by means of a connecting channel (22). A valve (24) is arranged in the connecting channel (22), which closes a through opening (32). On exceeding a set pressure difference between the pressure side (30) and the suction side (20) the valve opens automatically. In order to reduce the necessary space and to reduce the switching noise from the valve the valve body is embodied as a flap valve (28).
IPC 8 full level
F04C 18/12 (2006.01); F04C 28/26 (2006.01)
CPC (source: EP KR US)
F04C 18/12 (2013.01 - KR); F04C 18/126 (2013.01 - EP US); F04C 28/26 (2013.01 - EP KR US); F04C 28/28 (2013.01 - KR); F04C 29/00 (2013.01 - KR); F04C 2220/10 (2013.01 - EP US); F04C 2270/21 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
WO 2010009939 A1 20100128; CN 102099582 A 20110615; CN 102099582 B 20140528; CN 103867436 A 20140618; CN 103867436 B 20160302; EP 2310684 A1 20110420; EP 2310684 B1 20181107; JP 2011528765 A 20111124; JP 5771144 B2 20150826; KR 20110041538 A 20110421; US 2011129374 A1 20110602; US 8740578 B2 20140603
DOCDB simple family (application)
EP 2009057192 W 20090610; CN 200980128458 A 20090610; CN 201410077978 A 20090610; EP 09779711 A 20090610; JP 2011519097 A 20090610; KR 20117003983 A 20090610; US 200913055224 A 20090610