Global Patent Index - EP 3507496 A1

EP 3507496 A1 20190710 - DRY-COMPRESSING VACUUM PUMP

Title (en)

DRY-COMPRESSING VACUUM PUMP

Title (de)

TROCKENVERDICHTENDE VAKUUMPUMPE

Title (fr)

POMPE À VIDE À COMPRESSION SÈCHE

Publication

EP 3507496 A1 20190710 (DE)

Application

EP 17751770 A 20170814

Priority

  • DE 202016005208 U 20160830
  • EP 2017070626 W 20170814

Abstract (en)

[origin: CA3034112A1] A dry-compressing vacuum pump, in particular a screw pump, has two rotor elements (14) which are arranged in a pump chamber (12) and which are each carried by a rotor shaft (22). Two shaft ends of the rotor shafts (22) project through a side wall (28) of the pump housing (10). On the two shaft ends (28) there is arranged in each case one toothed belt pulley (38). Furthermore, a drive device and an electric motor for driving the rotor shaft (22) are provided. According to the invention, the rotor shafts (22) are driven by means of a toothed belt (40). To be able to use a toothed belt for drive purposes, a rotational flank clearance between the two rotor elements (14) of greater than ±0.75°, in particular greater than ±1°, is provided.

IPC 8 full level

F04C 18/08 (2006.01); F04C 18/16 (2006.01); F04C 25/02 (2006.01)

CPC (source: EP KR US)

F04C 18/084 (2013.01 - EP KR US); F04C 18/126 (2013.01 - US); F04C 18/16 (2013.01 - EP KR US); F04C 25/02 (2013.01 - EP KR US); F04C 29/005 (2013.01 - KR); F04C 29/0071 (2013.01 - US); F04C 29/005 (2013.01 - US); F04C 2210/1005 (2013.01 - KR); F04C 2210/221 (2013.01 - KR); F04C 2220/12 (2013.01 - EP KR US); F04C 2230/602 (2013.01 - EP KR US); F04C 2240/20 (2013.01 - US); F04C 2240/50 (2013.01 - KR); F04C 2240/80 (2013.01 - US); F05B 2210/12 (2013.01 - KR); F05B 2210/16 (2013.01 - KR); F05B 2240/50 (2013.01 - KR US); F05B 2260/4021 (2013.01 - KR US)

Citation (search report)

See references of WO 2018041620A1

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

DE 202016005208 U1 20171201; BR 112019002903 A2 20190521; CA 3034112 A1 20180308; CN 109642574 A 20190416; CN 109642574 B 20200804; EP 3507496 A1 20190710; EP 3507496 B1 20200715; JP 2019526738 A 20190919; KR 20190043139 A 20190425; US 2019186493 A1 20190620; WO 2018041620 A1 20180308

DOCDB simple family (application)

DE 202016005208 U 20160830; BR 112019002903 A 20170814; CA 3034112 A 20170814; CN 201780052596 A 20170814; EP 17751770 A 20170814; EP 2017070626 W 20170814; JP 2019511755 A 20170814; KR 20197006039 A 20170814; US 201716328581 A 20170814