EP 3797223 B1 20220720 - STATOR ELEMENT OF A PROGRESSIVE CAVITY PUMP AND PROGRESSIVE CAVITY PUMP
Title (en)
STATOR ELEMENT OF A PROGRESSIVE CAVITY PUMP AND PROGRESSIVE CAVITY PUMP
Title (de)
STATORELEMENT EINER EXZENTERSCHNECKENPUMPE UND EXZENTERSCHNECKENPUMPE
Title (fr)
ELÉMENT DE STATOR D'UNE POMPE À CAVITÉS PROGRESSIVES ET POMPE À CAVITÉS PROGRESSIVES
Publication
Application
Priority
- FR 1854309 A 20180523
- FR 2019051113 W 20190516
Abstract (en)
[origin: WO2019224457A1] The invention relates to a stator element of a progressive cavity pump, the stator element including: a reinforcement tube (20) having a longitudinal axis (A-A), an inner face (22) and an outer face (24), and an elastomer lining attached to the inner face of the reinforcement tube. At least one portion of the reinforcement tube (20) has a substantially constant thickness (e) and said portion of the reinforcement tube (20) is deformed so that it comprises at least a first raised pattern (28) and a second raised pattern (30), the first raised pattern (28) being in the shape of a helical strip having a right-handed thread with respect to the longitudinal axis (A-A), the second raised pattern (30) being in the shape of a helical strip having a left-handed thread with respect to the longitudinal axis (A-A), the first and second raised patterns meeting in least at one section (32).
IPC 8 full level
F04C 2/107 (2006.01)
CPC (source: EP US)
F04C 2/107 (2013.01 - US); F04C 2/1075 (2013.01 - EP US); F04C 13/008 (2013.01 - EP); F04C 2240/10 (2013.01 - US); F04C 2240/20 (2013.01 - US); F04C 2240/802 (2013.01 - US)
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
DOCDB simple family (publication)
WO 2019224457 A1 20191128; CA 3100403 A1 20191128; EP 3797223 A1 20210331; EP 3797223 B1 20220720; FR 3081519 A1 20191129; FR 3081519 B1 20200529; US 11326594 B2 20220510; US 2021190068 A1 20210624
DOCDB simple family (application)
FR 2019051113 W 20190516; CA 3100403 A 20190516; EP 19730401 A 20190516; FR 1854309 A 20180523; US 201917057359 A 20190516