EP 1656504 A1 20060517 - REDUCING EXHAUST PULSATION IN DRY PUMPS
Title (en)
REDUCING EXHAUST PULSATION IN DRY PUMPS
Title (de)
REDUZIERUNG DER ABGASPULSATION IN TROCKENPUMPEN
Title (fr)
REDUCTION DES PULSATIONS D'ECHAPPEMENT DANS DES POMPES SECHES
Publication
Application
Priority
- GB 2004003316 W 20040802
- GB 0319344 A 20030818
Abstract (en)
[origin: WO2005019652A1] A vacuum pump comprises a stator housing first and second shafts adapted for counter-rotation within the stator. Each shaft carries a plurality of rotor elements such that the rotor elements on the first shaft intermesh with the rotor elements on the second shaft. The pump also comprises a pump inlet for receiving fluid to be pumped and a pump outlet for exhausting pumped fluid. Each of the intermeshing rotor elements proximate the outlet comprises a plurality of protrusions extending from a centre of rotation, the protrusions being rotationally asymmetrically arranged around the centre of rotation of the rotor element.
IPC 1-7
IPC 8 full level
F04C 18/12 (2006.01); F04C 23/00 (2006.01); F04C 29/00 (2006.01)
CPC (source: EP)
F04C 18/123 (2013.01); F04C 23/001 (2013.01); F04C 29/0035 (2013.01)
Citation (search report)
See references of WO 2005019652A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005019652 A1 20050303; EP 1656504 A1 20060517; GB 0319344 D0 20030917; JP 2007502932 A 20070215; TW 200513594 A 20050416
DOCDB simple family (application)
GB 2004003316 W 20040802; EP 04767951 A 20040802; GB 0319344 A 20030818; JP 2006523664 A 20040802; TW 93124573 A 20040816