MUMBAI, India, March 14 -- Intellectual Property India has published a patent application (202514079553 A) filed by Netzsch Pumpen & Systeme Gmbh, Selb, Germany, on Aug. 21, 2025, for 'stators for eccentric screw pumps, eccentric screw pump and production method.'
Inventor(s) include Martin Zierhofer; Burim Djimsiti; Christian Hoffmann; Stefan Kern; Frank Gotz; Priscilla Benedet-Eulenberger; Andreas Eicher; and Stefan Weigl.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The invention relates to a stator (3; 103) for an eccentric screw pump (1), with a stator body (5; 115) having a jacket (19; 119) and an elastic inner lining (21; 121), with which the jacket (19; 119) is provided. According to a first aspect, the jacket and the inner lining are in each case formed with a thermoplastic plastic material. According to a second aspect, the jacket is formed with a thermoplastic plastic material, the inner lining is formed with a material with elastomeric properties and the stator body is produced in a two-component injection molding process or in an at least two-stage casting process. According to a third aspect, the jacket has a screw surface-like outer surface (31; 131) on the outer side at least in sections, which is modified area by area at least by means of additional demolding surfaces (36; 136). According to a fourth aspect, a stator (3; 103) for an eccentric screw pump (1) is further proposed, having an inner component or inner lining (21; 121), which is provided for a cooperation with a rotor (4) of the eccentric screw pump (1) and which is formed with a thermoplastic elastomer or a thermoplastic polyurethane. An eccentric screw pump and a method for the production of a stator for an eccentric screw pump are further proposed."
Disclaimer: Curated by HT Syndication.
