EP 1522729 B2 20130327 - Progressive cavity pump and stator for such a pump
Title (en)
Progressive cavity pump and stator for such a pump
Title (de)
Exzenterschnecken-Pumpe und Stator für eine solche Pumpe
Title (fr)
Pompe à cavité progressive et stator pour une telle pompe
Publication
Application
Priority
EP 03022804 A 20031007
Abstract (en)
[origin: EP1522729A1] Eccentric spiral pump comprises an inner casing (2) made from wear-resistant elastic material in a cylindrical housing casing (1). An inner surface (3) of the inner casing or the inner casing has a rinsing direction and length on the side facing inward. A screw-like rotor (6, 8) inserted into the inner casing in a first axial position is also provided. An independent claim is also included for an elastomer stator for the eccentric spiral pump. Preferred Features: The inner casing is extended from its front in the radial or axial direction so that the front edge (24) of the rotor rotates eccentrically during the pump operation.
IPC 8 full level
F04C 2/107 (2006.01)
CPC (source: EP)
F04C 2/1075 (2013.01)
Citation (opposition)
Opponent :
- DE 10026694 A1 20001221 - INST FRANCAIS DU PETROLE [FR]
- US 6183226 B1 20010206 - WOOD STEVEN M [US], et al
- DE 1303705 C2 19731011
- DE 19531318 A1 19970227 - ARTEMIS KAUTSCHUK KUNSTSTOFF [DE]
- US 6170572 B1 20010109 - FULBRIGHT GENE RAY NEIL [US], et al
- DE 2937403 A1 19810402 - GUMMI JAEGER KG GMBH & CIE
- DE 3304751 A1 19840823 - KUNSTSTOFFTECHNIK OBERNKIRCHEN [DE]
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 PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1522729 A1 20050413; EP 1522729 B1 20061227; EP 1522729 B2 20130327; AT E349617 T1 20070115; CY 1106407 T1 20111012; DE 50306120 D1 20070208; ES 2279917 T3 20070901; ES 2279917 T5 20130624
DOCDB simple family (application)
EP 03022804 A 20031007; AT 03022804 T 20031007; CY 071100401 T 20070322; DE 50306120 T 20031007; ES 03022804 T 20031007