Patents by Inventor Stefan Weigl
Stefan Weigl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10760571Abstract: A coupling element for connecting a helix-shaped eccentric screw pump rotor to a drive shaft, with a drive shaft receiving portion and a rotor connecting portion arranged at an opposite end of the coupling element from the drive shaft receiving portion, the rotor connecting portion is constituted as a hollow cylinder for receiving a rotor end of the screw pump rotor, wherein the hollow cylinder has at least two inner circumferential surfaces which are complementary to the rotor and have a radius which is fixed with respect to the cross-sectional center of the hollow cylinder.Type: GrantFiled: June 9, 2016Date of Patent: September 1, 2020Assignee: NETZSCH Pumpen & Systeme GmbHInventors: Mikael Tekneyan, Philipp Nübl, Stefan Weigl, Helmuth Weber, Markus Rosam
-
Publication number: 20200070176Abstract: A cutting unit for recovering gluten from a mixture containing starch and gluten, having a housing in which is formed a cutting chamber having an inlet and an outlet. A first shaft, which is mounted in a rotatable manner in the housing, has a multiplicity of first disc-like cutting tools, which are fitted in a rotationally fixed manner on the first shaft, wherein in each case two adjacent cutting tools of the multiplicity of first cutting tools are spaced apart from one another axially to form an interspace. A second shaft, which is mounted in a rotatable manner in the housing is arranged parallel to the first shaft and has a multiplicity of second disc-like cutting tools, which are fitted in a rotationally fixed manner on the second shaft, wherein in each case two adjacent cutting tools of the multiplicity of second cutting tools are spaced apart from one another axially to form a further interspace.Type: ApplicationFiled: November 14, 2017Publication date: March 5, 2020Inventors: Stefan Weigl, Herbert Brunner, Achim Dehnz, Dominik Hindera, Franz Kneidl, Thomas Schmitt, Stefan Schoeberl, Erwin Weber, Horst Engl
-
Patent number: 10539136Abstract: A method for fixing rotary pistons in a rotary piston pump and a method for dismantling rotary pistons of a rotary piston pump, where the rotary piston pump has two counter-rotating rotary arranged in a pump space on drive shafts. The rotary pistons each include a seating for the drive shafts. The respective drive shaft is arranged and fixed with an end region in the seating of the respective rotary piston. A diameter of the drive shafts in the end region can be widened elastically. In an operational state, in which the rotary pistons are arranged on the respective drive shafts, a frictional connection is formed between the respective seating of the rotary piston and the end region of the respective drive shaft.Type: GrantFiled: November 20, 2015Date of Patent: January 21, 2020Assignee: NETZSCH Pumpen & Systeme GmbHInventors: Stefan Weigl, Franz Kneidl, Thomas Schmitt, Achim Dehnz, Dominik Hindera, Mathias Obermaier, Markus Rosam, Erwin Weber
-
Publication number: 20180180044Abstract: A coupling element for connecting a helix-shaped eccentric screw pump rotor to a drive shaft, with a drive shaft receiving portion and a rotor connecting portion arranged opposite, which is constituted as a hollow cylinder for receiving a rotor end, wherein the hollow cylinder has at least two inner circumferential surfaces which are complementary to the rotor and have a radius which is fixed with respect to the cross-sectional center of the hollow cylinder.Type: ApplicationFiled: June 9, 2016Publication date: June 28, 2018Applicant: NETZSCH Pumpen & Systeme GmbHInventors: Mikael Tekneyan, Philipp Nübl, Stefan Weigl, Helmuth Weber, Markus Rosam
-
Publication number: 20170306949Abstract: A method for fixing rotary pistons in a rotary piston pump and a method for dismantling rotary pistons of a rotary piston pump, where the rotary piston pump has two counter-rotating rotary arranged in a pump space on drive shafts. The rotary pistons each include a seating for the drive shafts. The respective drive shaft is arranged and fixed with an end region in the seating of the respective rotary piston. A diameter of the drive shafts in the end region can be widened elastically. In an operational state, in which the rotary pistons are arranged on the respective drive shafts, a frictional connection is formed between the respective seating of the rotary piston and the end region of the respective drive shaft.Type: ApplicationFiled: November 20, 2015Publication date: October 26, 2017Applicant: NETZSCH Pumpen & Systeme GmbHInventors: Stefan Weigl, Franz Kneidl, Thomas Schmitt, Achim DEHNZ, Dominik HINDERA, Mathias OBERMAIER, Markus Rosam, Erwin Weber
-
Patent number: 9617995Abstract: A rotary piston pump with at least two double- or multi-lobe rotary pistons rotating in opposite directions, the drive shafts whereof include seals, wherein the seals are constituted as slip ring seals or lip seals or stuffing-box seals, which in each case are disposed on the shaft shoulder belonging to the respective rotary piston, and one slip ring per seal is provided with a locking device, which includes a large number of fixing positions. The seals are pushed onto a tubular shoulder of the rotary piston, the rotary piston is introduced into the pump housing, the securing element is connected to the slip ring seal in a form-fit manner by rotation of the rotary piston and the shaft shoulder is then rigidly connected to the drive shaft.Type: GrantFiled: August 6, 2014Date of Patent: April 11, 2017Assignee: NETZSCH Pumpen & Systeme GmbHInventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven, Thomas Schmitt
-
Patent number: 9617992Abstract: A rotary piston pump for the delivery of liquids and for the delivery of liquids containing solids. The rotary piston pump includes a pump housing which is provided with an inlet and an outlet. The pump housing includes a lining. Disposed in the pump housing, or inside the lining, are at least two counter-rotating rotary pistons, which form pump spaces during their rotation. During the rotational movement, the rotary pistons are sealed against one another, against the pump housing and against the lining. Disposed in the pump housing and/or in the lining, in the spatial vicinity of the inlet and/or the outlet, are means with which the pulsation can be reduced or even completely prevented.Type: GrantFiled: November 3, 2014Date of Patent: April 11, 2017Assignee: NETZSCH Pumpen & Systeme GmbHInventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven
-
Patent number: 9611850Abstract: A method and a device for fixing and synchronizing rotary pistons in a rotary piston pump involves introducing the rotary pistons into the pump space of the rotary piston pump. A shaft stub of each rotary piston is then pushed through a pump rear wall onto a driveshaft provided for the respective rotary piston. The rotary pistons are aligned and synchronized in the pump space via a template, the template being fixed detachably to a pump housing. The shaft stubs of the respective rotary piston are connected, after the synchronization, in each case via a clamping device in a friction-locked manner to the respective driveshaft, outside the pump space.Type: GrantFiled: August 6, 2014Date of Patent: April 4, 2017Assignee: NETZSCH Pumpen & Systeme GmbHInventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven
-
Patent number: 9028233Abstract: A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element.Type: GrantFiled: October 5, 2012Date of Patent: May 12, 2015Assignee: NETZSCH-Pumpen & Systeme GmbHInventors: Hans Juergen Linde, Bernhard Murrenhoff, Robert Kurz, Reinhard Denk, Josef Strassl, Thomas Boehme, Hisham Kamal, Stefan Weigl, Roger Willis, Stefan Kern, Johann Kreidl, Gunter Herr, Franz Kneidl, Mikael Tekneyan, Erwin Weber, Marcel Verhoeven, Mathias Gradl, Udo Enderle
-
Publication number: 20150050174Abstract: A rotary piston pump for the delivery of liquids and for the delivery of liquids containing solids. The rotary piston pump includes a pump housing which is provided with an inlet and an outlet. The pump housing includes a lining. Disposed in the pump housing, or inside the lining, are at least two counter-rotating rotary pistons, which form pump spaces during their rotation. During the rotational movement, the rotary pistons are sealed against one another, against the pump housing and against the lining. Disposed in the pump housing and/or in the lining, in the spatial vicinity of the inlet and/or the outlet, are means with which the pulsation can be reduced or even completely prevented.Type: ApplicationFiled: November 3, 2014Publication date: February 19, 2015Inventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven
-
Publication number: 20140360359Abstract: A rotary piston for a rotary piston pump includes at least one supporting body, through which a rotational axis of the rotary piston extends, and at least one end cap section, which is disposed radially outwards from the at least one supporting body and is connected flexibly, preferably elastically, to the at least one supporting body.Type: ApplicationFiled: August 20, 2014Publication date: December 11, 2014Inventors: Liessel Roland, Wolfgang Nindel, Bernhard Murrenhoff, Robert Kurz, Reinhard Denk, Josef Strassl, Thomas Boehme, Hisham Kamal, Stefan Weigl, Roger Willis, Stefan Kern, Johann Kreidl, Gunther Herr, Marcel Verhoeven, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber
-
Publication number: 20140345451Abstract: A method and a device for fixing and synchronising rotary pistons in a rotary piston pump are disclosed. The rotary pistons are introduced into the pump space of the rotary piston pump. A shaft stub of each rotary piston is then pushed through a pump rear wall onto a driveshaft provided for the respective rotary piston. The rotary pistons are aligned and synchronised in the pump space by means of a template, the template being fixed detachably to a pump housing. The shaft stubs of the respective rotary piston are connected, after the synchronisation, in each case by means of a clamping device in a friction-locked manner to the respective driveshaft, outside the pump space.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven
-
Publication number: 20140348687Abstract: A rotary piston pump with at least two double- or multi-lobe rotary pistons rotating in opposite directions, the drive shafts whereof include seals, wherein the seals are constituted as slip ring seals or lip seals or stuffing-box seals, which in each case are disposed on the shaft shoulder belonging to the respective rotary piston, and one slip ring per seal is provided with a locking device, which includes a large number of fixing positions. The seals are pushed onto a tubular shoulder of the rotary piston, the rotary piston is introduced into the pump housing, the securing element is connected to the slip ring seal in a form-fit manner by rotation of the rotary piston and the shaft shoulder is then rigidly connected to the drive shaft.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Stefan Weigl, Reinhard Denk, Hisham Kamal, Josef Strassl, Robert Kurz, Bernhard Murrenhoff, Thomas Boehme, Gunther Herr, Franz Kneidl, Mikael Tekneyan, Matthias Gradl, Erwin Weber, Roger Willis, Stefan Kern, Johann Kreidl, Marcel Verhoeven, Thomas Schmitt
-
Publication number: 20140016991Abstract: The invention discloses a joint for the transmission of torques and axial forces in conjunction with an eccentric rotary motion. In a preferred embodiment, the joint according to the invention is used in an eccentric screw pump for connecting the drive to the pump rotor. The joint connects a coupling rod and a tool and/or a drive to one another. When the joint is used in an eccentric screw pump, the tool is the rotor of the pump. Furthermore, the joint is provided with at least one casing. The axial forces acting on the joint can be transmitted by a first joint part and the torques by a second joint part.Type: ApplicationFiled: September 17, 2013Publication date: January 16, 2014Inventors: Hisham Kamal, Stefan Weigl, Christian Bindig
-
Publication number: 20130129555Abstract: The rotary piston pump includes two counter-rotating rotary pistons and an oval pump housing. Every rotary piston has a rotary piston vane and is provided with a contact element. The contact points of the flanks of the two rotary pistons in which the two rotary pistons form a friction pairing are provided with a contact element each. The interior of the oval pump housing is likewise provided with an exchangeable contact element.Type: ApplicationFiled: October 5, 2012Publication date: May 23, 2013Inventors: Hans Juergen Linde, Bernhard Murrenhoff, Robert Kurz, Reinhard Denk, Josef Strassl, Thomas Boehme, Hisham Kamal, Stefan Weigl, Roger Willis, Stefan Kern, Johann Kreidl, Gunter Herr, Franz Kneidl, Mikael Tekneyan, Erwin Weber, Marcel Verhoeven, Mathias Gradl
-
Publication number: 20130094985Abstract: A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element.Type: ApplicationFiled: October 5, 2012Publication date: April 18, 2013Inventors: Hans Juergen Linde, Bernhard Murrenhoff, Robert Kurz, Reinhard Denk, Josef Strassl, Thomas Boehme, Hisham Kamal, Stefan Weigl, Roger Willis, Stefan Kern, Johann Kreidl, Gunter Herr, Franz Kneidl, Mikael Tekneyan, Erwin Weber, Marcel Verhoeven, Mathias Gradl, Udo Enderle
-
Patent number: 6582824Abstract: A composition comprises a curable epoxy-containing material, a first thermoplastic polyurethane component, a curative for the epoxy-containing material, and optionally, a second thermoplastic polyurethane component that is different than the first thermoplastic polyurethane component. The compositions are useful for sealing discontinuities in a substrate surface, especially those found in motor vehicles. Sealant articles and methods of sealing discontinuities are also disclosed.Type: GrantFiled: March 30, 2001Date of Patent: June 24, 2003Assignee: 3M Innovative Properties CompanyInventors: Stefan Weigl, Gertrud A. Klein, Shuichi Kitano, Kotaro Shinozaki, Tomohiro Koiwa, Kazuyoshi Shiozaki
-
Patent number: 6565969Abstract: The present invention relates to an adhesive article comprising a bondable layer having on at least one major surface a layer of pressure sensitive adhesive, wherein the bondable layer comprises a thermosetting material, a thermoplastic material, or a hybrid material, wherein the pressure sensitive adhesive layer substantially retains pressure sensitive adhesive characteristics after storage at room temperature for at least about three months prior to bonding the adhesive article, and the adhesive article has a overlap shear measured at room temperature according to ASTM D-1002-94 of at least about 6.9 MPa after bonding as well as a method for making an adhesive article.Type: GrantFiled: October 21, 1999Date of Patent: May 20, 2003Assignee: 3M Innovative Properties CompanyInventors: Alain Henri Lamon, Susan C. Noe, Dieter Jung, Juergen Klingen, Jörg von Seggern, Jadwiga Walhoefer, Stefan Weigl, Robert E. Bolitsky
-
Publication number: 20010025079Abstract: The present invention provides an adhesive composition comprising a uniform mixture of components, the components comprising a first and a second thermoplastic polyurethane, the first thermoplastic polyurethane being a thermoplastic polyurethane of which the shear tan &dgr; versus temperature curve approaches infinity at a temperature above 150° C. and that has a glass transition temperature of not more than 10° C., the second thermoplastic polyurethane having a softening point of not more than 80° C. and the adhesive composition being solid at a temperature of 20° C. and being capable of bonding to glass or a ceramic frit layer provided on glass at a temperature between 100° C. and 160° C. The present invention further provides a method for bonding a locator pin to a window glass using the adhesive composition and further a locator pin having the adhesive composition.Type: ApplicationFiled: December 27, 2000Publication date: September 27, 2001Applicant: 3M Innovative Properties CompanyInventors: Stefan Weigl, Gertrud Klein
-
Patent number: 5405675Abstract: An embossed multilayer film comprises an embossed base layer and a conformable, substantially uniformly thick protective surface layer that overlies the base layer. In one embodiment, the embossed multilayer film can be re-embossed. In another embodiment, the surface layer is provided by a polyurethane-based material. The invention also relates to a method of providing such an embossed multilayer film.Type: GrantFiled: December 10, 1992Date of Patent: April 11, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Raymond M. Sawka, Carl W. McMullen, Chia-Tie Ho, Stefan Weigl