EP 0922165 A1 19990616 - VACUUM PUMP
Title (en)
VACUUM PUMP
Title (de)
VAKUUMPUMPE
Title (fr)
POMPE A FAIRE LE VIDE
Publication
Application
Priority
- DE 19634519 A 19960827
- EP 9704509 W 19970819
Abstract (en)
[origin: DE19634519A1] The invention concerns a vacuum pump (1) having an inlet (3) and an outlet (4). According to the invention, in order to prevent disturbance from excess pressure in the pump (1) when it is started, a differential-pressure-controlled inlet valve (52) is provided which chokes the pumping capacity at high inlet pressure.
IPC 1-7
IPC 8 full level
F04B 25/00 (2006.01); F04B 25/02 (2006.01); F04B 39/10 (2006.01); F04B 49/22 (2006.01)
CPC (source: EP)
F04B 25/00 (2013.01); F04B 25/02 (2013.01)
Citation (search report)
See references of WO 9809079A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19634519 A1 19980305; DE 59705578 D1 20020110; DE 59712067 D1 20041209; EP 0922163 A1 19990616; EP 0922163 B1 20011128; EP 0922165 A1 19990616; EP 0922165 B1 20041103; WO 9809077 A1 19980305; WO 9809079 A1 19980305
DOCDB simple family (application)
DE 19634519 A 19960827; DE 59705578 T 19970806; DE 59712067 T 19970819; EP 9704282 W 19970806; EP 9704509 W 19970819; EP 97936688 A 19970806; EP 97944768 A 19970819