EP 2028372 B1 20150729 - Stator for an eccentric screw pump or an eccentric screw motor in accordance with the Moineau principle
Title (en)
Stator for an eccentric screw pump or an eccentric screw motor in accordance with the Moineau principle
Title (de)
Stator für eine Exzenterschneckenpumpe oder einen Exzenterschenkenmotor nach dem Moineau-Prinzip
Title (fr)
Stator pour une pompe à vis sans fin excentrique ou un moteur à vis sans fin excentrique selon le principe Moineau
Publication
Application
Priority
- EP 04803164 A 20041117
- US 71481203 A 20031117
Abstract (en)
[origin: US2005106052A1] The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the stator has one spiral more than does the motor. So that the stator also remains functional under conditions where the fixed connection between the lining and the outer tube could be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes disposing two inner tubes that have apertures in the lining.
IPC 8 full level
F04C 2/107 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 2/1075 (2013.01 - EP US); F04C 15/0003 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 2005106052 A1 20050519; US 7131827 B2 20061107; BR PI0416662 A 20070116; BR PI0416662 B1 20170207; CA 2473001 A1 20050517; CA 2473001 C 20110419; CA 2712364 A1 20050517; CA 2712364 C 20130827; DE 502004009512 D1 20090702; EP 1738078 A2 20070103; EP 1738078 B1 20090520; EP 2028372 A2 20090225; EP 2028372 A3 20140827; EP 2028372 B1 20150729; US 2007053783 A1 20070308; US 7329106 B2 20080212; WO 2005047702 A2 20050526; WO 2005047702 A3 20051124
DOCDB simple family (application)
US 71481203 A 20031117; BR PI0416662 A 20041117; CA 2473001 A 20040706; CA 2712364 A 20040706; DE 502004009512 T 20041117; EP 04803164 A 20041117; EP 08018529 A 20041117; EP 2004013037 W 20041117; US 59374006 A 20061107