Patents by Inventor Ulrich Schroeder
Ulrich Schroeder 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).
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Patent number: 9099946Abstract: A high speed energy storage flywheel comprises a rotor which is located in a vacuum chamber provided in a stator housing and is supported by magnetic bearings with respect to the stator housing. A fluid tank used for releasing in a controlled manner, a fluid inside the vacuum chamber and therefore create a braking effect on the rotor by friction.Type: GrantFiled: January 31, 2014Date of Patent: August 4, 2015Assignee: SKF MAGNETIC MECHATRONICSInventor: Ulrich Schroeder
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Publication number: 20150171675Abstract: A permanent magnet rotor assembly comprises a cylindrically shaped shaft having an outer surface, a plurality of permanent magnets constituting portions of annular segments and an outer retaining cylindrical sleeve surrounding the plurality of permanent magnets. The assembly further comprises a cylindrical magnet housing mounted on the cylindrically shaped shaft for supporting the plurality of permanent magnets. The cylindrical magnet housing is formed of a magnetic material. The retaining cylindrical sleeve is preloaded by a resultant interference fit IF2 which is defined by the following formula: IF2=?ØY+?{square root over (((ØY+IF1)?2+ØY?2?ØX?2))}. where ØY is an external diameter of the plurality of permanent magnets, ØX is an internal diameter of the cylindrical magnet housing, and IF1 is a primary interference fit between an external diameter of the cylindrically shaped shaft and the internal diameter of the cylindrical magnet housing.Type: ApplicationFiled: December 16, 2014Publication date: June 18, 2015Applicant: SKF MAGNETIC MECHATRONICSInventors: Eduardo CARRASCO, Ulrich SCHROEDER
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Patent number: 8895800Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer and a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles having a moisture content of at least 8% by weight.Type: GrantFiled: July 30, 2009Date of Patent: November 25, 2014Assignee: BASF SEInventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph Louden
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Publication number: 20140302985Abstract: The present invention relates to a process for producing fluid-absorbent cores, comprising mixing a fibrous material and fluid-absorbent polymer particles having low moisture content and low apparent density and pressing the obtained mixture under specific conditions.Type: ApplicationFiled: June 19, 2014Publication date: October 9, 2014Applicant: BASF SEInventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, Sylvia Bertha, John Joseph Louden
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Patent number: 8821109Abstract: A device for detecting the axial position of a rotary shaft of a rotary machine comprises a target of ferromagnetic material placed at the end of the rotary shaft, an induction coil associated with a stationary magnetic circuit and placed facing the target while leaving an airgap, and a power supply circuit. The power supply circuit comprises an AC voltage source connected between a first end of the induction coil and a zone situated at a reference voltage, at least one capacitor connected between the ends of the induction coil, and a detector device interposed between a second end of the induction coil and the zone situated at the reference voltage, in order to deliver on a line information about the magnitude of the current flowing between the second end and the zone situated at the reference voltage.Type: GrantFiled: April 9, 2012Date of Patent: September 2, 2014Assignee: SKF Magnetic MechatronicsInventor: Ulrich Schroeder
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Patent number: 8796174Abstract: The present invention relates to a process for producing fluid-absorbent cores, comprising mixing a fibrous material and fluid-absorbent polymer particles having low moisture content and low apparent density and pressing the obtained mixture under specific conditions.Type: GrantFiled: August 3, 2009Date of Patent: August 5, 2014Assignee: BASF SEInventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, Sylvia Bertha, John Joseph Louden
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Publication number: 20140210424Abstract: A high speed energy storage flywheel comprises a rotor which is located in a vacuum chamber provided in a stator housing and is supported by magnetic bearings with respect to the stator housing. A fluid tank used for releasing in a controlled manner, a fluid inside the vacuum chamber and therefore create a braking effect on the rotor by friction.Type: ApplicationFiled: January 31, 2014Publication date: July 31, 2014Applicant: SKF MAGNETIC MECHATRONICSInventor: Ulrich Schroeder
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Publication number: 20140199179Abstract: A hybrid magnetic suspension of a rotor (1) having compressor wheels (2, 3) having permanent magnets (104, 114) integral to shrunk fit rings (8, 18) arranged on the rotor (1) in the vicinity of the compressor wheels (2, 3), permanent magnets (124, 134) integral to stationary rings (23, 33) coaxially arranged with the rotor (1) and associated with a resilient material (5, 15) to define a passive radial magnetic bearing, coils (6, 16) associated with magnetic armatures (10, 20) and facing rotor parts (7, 17) being located perpendicularly to the rotor (1), and axial sensors (60, 160) configured for sensing the axial position of the rotor (1) and control means (200) configured for feeding the coils (6, 16) as a function of the outputs of the axial sensors (60, 160) for generating both axial bearing forces and a motor torque and thereby being adapted for defining an axial bearingless motor.Type: ApplicationFiled: December 26, 2013Publication date: July 17, 2014Applicant: Aktiebolaget SKFInventors: Joaquim Da Silva, Yves Dupuis, Olivier Lemarchand, Lateb Ramdane, Erwan Salahun, Ulrich Schroeder
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Patent number: 8669410Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer, a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles, and an acquisition distribution layer, wherein the acquisition distribution layer comprises a fibrous material and 0 to 20% by weight of spherical fluid-absorbent polymer particles.Type: GrantFiled: July 30, 2009Date of Patent: March 11, 2014Assignee: BASF SEInventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph Louden
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Publication number: 20140023534Abstract: An electric centrifugal compressor for a heat ventilation air conditioning system for vehicles comprises a motor portion (20) and a centrifugal compressor portion (10) driven by the motor portion (20) through a shaft (15). It comprises an electromagnetic device for levitating the shaft (15) during functional operation of the electric compressor and auxiliary landing bearings (8). The electromagnetic device may comprise in particular an axial bearingless motor.Type: ApplicationFiled: June 24, 2013Publication date: January 23, 2014Applicant: AKTIEBOLAGET SKFInventors: Lateb Ramdane, Joaquim Da Silva, Eric Helene, Frederic Ponson, Ulrich Schroeder
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Publication number: 20130343927Abstract: A compact electric centrifugal compressor particularly suitable for a heat ventilation air conditioning system for vehicles provides a motor portion (20) and a centrifugal compressor portion (10) driven by the motor portion (20) through a shaft (15). The motor portion includes first and second radial bearingless motors (140, 150). An active axial magnetic bearing or an axial bearingless motor (130) is located between the first and second radial bearingless motors (140, 150). The motor portion is further equipped with auxiliary landing bearings (8).Type: ApplicationFiled: June 24, 2013Publication date: December 26, 2013Applicant: AKTIEBOLAGET SKFInventors: Lateb Ramdane, Joaquim Da Silva, Eric Helene, Frederic Ponson, Ulrich Schroeder
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Publication number: 20120263577Abstract: A device for detecting the axial position of a rotary shaft of a rotary machine comprises a target of ferromagnetic material placed at the end of the rotary shaft, an induction coil associated with a stationary magnetic circuit and placed facing the target while leaving an airgap, and a power supply circuit. The power supply circuit comprises an AC voltage source connected between a first end of the induction coil and a zone situated at a reference voltage, at least one capacitor connected between the ends of the induction coil, and a detector device interposed between a second end of the induction coil and the zone situated at the reference voltage, in order to deliver on a line information about the magnitude of the current flowing between the second end and the zone situated at the reference voltage.Type: ApplicationFiled: April 9, 2012Publication date: October 18, 2012Applicant: SOCIETE DE MECANIQUE MAGNETIQUEInventor: Ulrich SCHROEDER
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Publication number: 20110176910Abstract: The flexibly-mounted turbomolecular pump comprises a leaktight casing mounted on a structure via a mechanical damper, a vertical support driven by an electric motor, radial magnetic bearings, an axial magnetic bearing, radial detectors, an axial detector, an emergency mechanical bearing, and a control module comprising power supply circuits and servo-control circuits for the axial and radial magnetic bearings. The servo-control circuits present low stiffness and include filter circuits for defining a limited passband. The control module comprises a comparator unit for detecting abnormally large movements of the rotor from signals delivered by the axial and radial detectors, which movements are greater than predetermined thresholds.Type: ApplicationFiled: September 21, 2009Publication date: July 21, 2011Applicant: SOCIETE DE MECANIQUE MAGNETIQUEInventors: Ulrich Schroeder, Maurice Brunet, Olivier Lemarchand
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Publication number: 20110166541Abstract: An application system for applying a solid particle includes an injector housing having a material inlet, a gas inlet, and a material outlet, and an occluder moveably disposed within the injector housing between the gas inlet and the material outlet. The injector housing and the occluder define there between at least one adjustable aperture downstream of the material inlet and in fluid communication with the gas inlet and the material outlet. The aperture has a first open area with the occluder in a first position and a second open area with the occluder in a second position, the second open area being different than the first open area. The system also includes a nozzle having a nozzle inlet coupled to the material outlet and a nozzle outlet, the inlet having a circular cross-section and the outlet having a rectangular cross-section.Type: ApplicationFiled: September 14, 2009Publication date: July 7, 2011Applicant: BASE SE a German CorporationInventors: Oskar Stephan, Reiner Witt, Ulrich Schröder, John Joseph Louden, Xiaomin Zhang, Martin Juarez-Zamacona
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Publication number: 20110130735Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer and a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles having a moisture content of at least 8% by weight.Type: ApplicationFiled: July 30, 2009Publication date: June 2, 2011Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph
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Publication number: 20110130275Abstract: The present invention relates to a process for producing fluid-absorbent cores, comprising mixing a fibrous material and fluid-absorbent polymer particles having low moisture content and low apparent density and pressing the obtained mixture under specific conditions.Type: ApplicationFiled: August 3, 2009Publication date: June 2, 2011Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, Sylvia Bertha, John Joseph Louden
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Publication number: 20110125119Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer, a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles, and an acquisition distribution layer, wherein the acquisition distribution layer comprises a fibrous material and 0 to 20% by weight of spherical fluid-absorbent polymer particles.Type: ApplicationFiled: July 30, 2009Publication date: May 26, 2011Applicant: BASF SEInventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph Louden
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Patent number: 7858655Abstract: The present invention concerns the use of Provided is a drug composition and a method for using the composition for the prevention and the therapy of neurodegenerative diseases. The combination comprises at least two of the following substances: ?-lipoic acid; ambroxol and one or several inhibitor(s) of the angiotension-converting enzyme (ACE).Type: GrantFiled: January 26, 2004Date of Patent: December 28, 2010Assignee: Keyneurotek Pharmaceuticals AGInventors: Peter Röhnert, Frank Striggow, Klaus Reymann, Siegfried Ansorge, Michael Täger, Ulrich Schröder
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Patent number: 7719151Abstract: An active magnetic bearing (100) with autodetection of position, the bearing comprising at least first and second opposing electromagnets (120, 130) forming stators disposed on either side of a ferromagnetic body (110) forming a rotor and held without contact between said electromagnets. The first and second electromagnets (120, 130) each comprising a magnetic circuit (121; 131) essentially constituted by a first ferromagnetic material and co-operating with said ferromagnetic body to define an airgap, together with an excitation coil (122; 132) powered from a power amplifier whose input current is servo-controlled as a function of the position of the ferromagnetic body relative to the magnetic circuits of the first and second electromagnets.Type: GrantFiled: March 16, 2005Date of Patent: May 18, 2010Assignee: Societe de Mecanique MagnetiqueInventors: Yann Tremaudant, Maurice Brunet, Ulrich Schroeder
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Patent number: 7397216Abstract: The present invention provides a circuit for monitoring harmonic distortion in the power supply of a synchronous electrical machine with permanent magnet excitation that comprises a rotor without a damper cage, a stator with first, second, and third windings, a frequency converter, and control circuits for controlling the frequency converter.Type: GrantFiled: November 1, 2006Date of Patent: July 8, 2008Assignee: Societe de Mecanique MagnetiqueInventors: Ulrich Schroeder, Maurice Brunet, Bertrand Haffray