Global Patent Index - EP 2330299 A4

EP 2330299 A4 20160615 - VACUUM EVACUATION DEVICE

Title (en)

VACUUM EVACUATION DEVICE

Title (de)

VORRICHTUNG FÜR VAKUUMENTLEERUNG

Title (fr)

DISPOSITIF D'ÉVACUATION DE VIDE

Publication

EP 2330299 A4 20160615 (EN)

Application

EP 09812899 A 20090910

Priority

  • JP 2009004496 W 20090910
  • JP 2008232324 A 20080910

Abstract (en)

[origin: EP2330299A1] A vacuum evacuation device including: a main pump; an auxiliary pump connected in series to the main pump; and an inter-pump piping for interconnecting an outlet of the main pump and an inlet of the auxiliary pump, wherein the main pump includes a mechanical booster pump; a ratio of the maximum power of a motor for the main pump to the maximum pumping rate of the main pump is no less than 5 W/(m 3 /h); the inter-pump piping includes a branch pipe branched from the middle of the inter-pump piping; and a check valve for releasing gas in the inter-pump piping and preventing a back flow of the gas is provided in the middle of the branch pipe.

IPC 8 full level

F04B 37/14 (2006.01); F04B 41/06 (2006.01); F04C 23/00 (2006.01); F04C 25/02 (2006.01)

CPC (source: EP KR US)

F04B 37/10 (2013.01 - KR); F04B 37/14 (2013.01 - EP US); F04B 37/16 (2013.01 - KR); F04B 39/10 (2013.01 - KR); F04B 41/06 (2013.01 - EP US)

Citation (search report)

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 SM TR

DOCDB simple family (publication)

EP 2330299 A1 20110608; EP 2330299 A4 20160615; CN 102124225 A 20110713; JP WO2010029750 A1 20120202; KR 101193479 B1 20121022; KR 20110040980 A 20110420; TW 201018790 A 20100516; TW I467092 B 20150101; US 2011164992 A1 20110707; WO 2010029750 A1 20100318

DOCDB simple family (application)

EP 09812899 A 20090910; CN 200980132175 A 20090910; JP 2009004496 W 20090910; JP 2010528647 A 20090910; KR 20117005262 A 20090910; TW 98130464 A 20090909; US 200913063040 A 20090910