EP 2249037 A2 20101110 - Method for producing a stator segment for a stator constructed in segments of an eccentric screw pump
Title (en)
Method for producing a stator segment for a stator constructed in segments of an eccentric screw pump
Title (de)
Verfahren zur Herstellung eines Statorsegments für einen segmentweise aufgebauten Stator einer Exzenterschneckenpumpe
Title (fr)
Procédé de fabrication d'un segment de stator de pompe à vis excentrique à stator segmenté
Publication
Application
Priority
US 43583809 A 20090505
Abstract (en)
The method involves machining a stator segment (1) provided in an initial condition by a material erosive linear cutting unit for producing a helical segment inner surface (2). The cutting unit is moved along closed outer edges (3, 4) such that the edges run on the inner surface. The cutting unit is aligned such that a gradient of the cutting unit lies on the inner surface and formed as a jet e.g. water jet, laser jet or plasma jet or a wire e.g. spark erosion wire or fuse wire. The stator segment is made of metal i.e. aluminum, ceramic or cross-linked thermoplastic polymer. An independent claim is also included for a stator segment for a stator constructed in segments of an eccentric screw pump or eccentric screw motor.
Abstract (de)
Verfahren zur Herstellung eines Statorsegments für einen segmentsweise aufgebauten Stator einer Exenterschneckenpumpe wobei ein sich in einem Ausgangszustand befindendes Statorsegment mittels eines Material abtragenden linearen Schneidmittels zur Erzeugung einer helixförmigen Segmentinnenfläche (2) bearbeitet wird.
IPC 8 full level
F04C 2/107 (2006.01)
CPC (source: EP US)
F04C 2/1075 (2013.01 - EP US); F04C 2230/10 (2013.01 - EP US); F04C 2240/70 (2013.01 - EP US); Y10T 29/49242 (2015.01 - EP US)
Citation (applicant)
US 7396220 B2 20080708 - DELPASSAND MAJID S [US], et al
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA ME RS
DOCDB simple family (publication)
EP 2249037 A2 20101110; CA 2703059 A1 20101105; US 2010284842 A1 20101111
DOCDB simple family (application)
EP 10004334 A 20100423; CA 2703059 A 20100504; US 43583809 A 20090505