Patents by Inventor Stefan Kern

Stefan Kern 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).

  • Publication number: 20190290879
    Abstract: In a method for performing an inhalation a reservoir is filed with a medication fluid or a medication container is connected to a designated connecting piece, a nebulizer unit is connected to a control unit and a mouthpiece, the nebulizer unit is activated, the medication fluid is atomized into a fine particulate aerosol which is emitted into an aerosol chamber formed by the nebulizer unit and the mouthpiece, and an inhalation is performed by a user. A pressure within the aerosol chamber and/or a flow rate through the aerosol chamber is measured using the control unit. The nebulizer is activated with each breath on occurrence of at least one activation criterion detected using the control unit. The nebulizer unit is deactivated with fulfillment of at least one stop criterion.
    Type: Application
    Filed: July 13, 2017
    Publication date: September 26, 2019
    Inventor: Stefan Kern
  • Patent number: 10385829
    Abstract: The present disclosure is directed to systems and methods for generating one or more farm-level power curves for a wind farm that can be used to validate an upgrade provided to the wind farm. The method includes operating the wind farm in a first operational mode. Another step includes collecting turbine-level operational data from one or more of the wind turbines in the wind farm during the first operational mode. The method also includes aggregating the turbine-level operational data into a representative farm-level time-series. Another step includes analyzing the operational data collected during the first second operational mode. Thus, the method also includes generating one or more farm-level power curves for the first operational mode based on the analyzed operational data.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: August 20, 2019
    Assignee: General Electric Company
    Inventors: Megan Wilson, Stefan Kern, Siddhanth Chandrashekar, Dongjai Lee, Sara Delport, Akshay Ambekar, Subhankar Ghosh
  • Patent number: 10371124
    Abstract: The present disclosure is directed to a system and method for determining wake losses of a wind farm. The wind farm includes a plurality of wind turbines. The method includes operating the wind farm in a first operational mode. Another step includes collecting turbine-level data from at least one upstream wind turbines in the wind farm during the first operational mode. The method also includes estimating a freestream farm-level power output for the wind farm during first operational mode based, at least in part, on the collected turbine-level data. A further step includes measuring an actual farm-level power output for the wind farm for the first operational mode. Thus, the method also includes determining the wake losses of the wind farm for the first operational mode as a function of the measured actual farm-level power output and the estimated freestream farm-level power output.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: August 6, 2019
    Assignee: General Electric Company
    Inventors: Megan Wilson, Stefan Kern, Akshay Krishnamurty Ambekar
  • Publication number: 20190139682
    Abstract: A bushing for switchgear is composed of an outer metal ring, a current-conducting element and a disk-shaped ceramic insulating element which can be mounted in a floating manner in the outer metal ring. There is also described a switchgear with such a bushing.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 9, 2019
    Inventors: STEFAN KERN, MICHAEL LEITNER, MAX SANDKE
  • Patent number: 10260481
    Abstract: The present disclosure is directed to a system and method for assessing farm-level performance of a wind farm. The method includes operating the wind farm in a first operational mode and identifying one or more pairs of wind turbines having wake interaction. The method also includes generating a pairwise dataset for the wind turbines pairs. Further, the method includes generating a first wake model based on the pairwise dataset and predicting a first farm-level performance parameter based on the first wake model. The method also includes operating the wind farm in a second operational mode and collecting operational data during the second operational mode. Moreover, the method includes predicting a first farm-level performance parameter for the second operational mode using the first wake model and the operational data from the second operational mode. The method further includes determining a second farm-level performance parameter during the second operational mode.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: April 16, 2019
    Assignee: General Electric Company
    Inventors: Megan Wilson, Stefan Kern, Siddhanth Chandrashekar, Akshay Ambekar
  • Patent number: 10174729
    Abstract: An injector for a fuel supply system of an internal combustion engine, namely for a common rail fuel supply system of an internal combustion engine which is formed in particular as a large diesel internal combustion engine or ship's diesel internal combustion engine, having an injection nozzle, a control valve and a retaining body. The injection nozzle and the control valve form a clamped composite, and the composite formed of the injection nozzle and control valve can be mounted on the retaining body as a unit and disassembled from the retaining body as a unit.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: January 8, 2019
    Assignee: MAN Energy Solutions SE
    Inventors: Thomas Atzkern, Maximilian Indrich, Stefan Kern, Claudius Weber, Ludwig Maier, Holger Schaar, Wolfgang Wagner, Thomas Klaua, Harald Wellenkötter, Werner Wörle
  • Patent number: 9995277
    Abstract: A method for controlling a wind farm includes: receiving temperature data associated with a plurality of locations along a sound path between the wind farm and a sound immission point from one or more sensors; estimating a propagation characteristic of the sound path based at least in part on the temperature data; predicting a noise level at the sound immission point based at least in part on the propagation characteristic; determining a control signal for one or more wind turbines in the wind farm based at least in part on the noise level; and using the control signal to control the one or more wind turbines.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: June 12, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Andreas Herrig, Seongkyu Lee, Stefan Kern, Thierry Pascal Maeder, Benoit Philippe Petitjean, Roger Drobietz, Sujan Kumar Pal, Biju Nanukuttan
  • Patent number: 9997302
    Abstract: An electrical component may include an electrically conductive element and electrical insulation that at least partially surrounds the element and without contact. A heat pipe may be surrounded by the insulation at least at one end and may partially protrude from the insulation, wherein the part of the heat pipe protruding from the insulation protrudes closer to the central element than the insulation.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: June 12, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Vladimir Danov, Stefan Kern, Jochen Schaefer
  • Publication number: 20170370348
    Abstract: The present disclosure is directed to a system and method for assessing farm-level performance of a wind farm. The method includes operating the wind farm in a first operational mode and identifying one or more pairs of wind turbines having wake interaction. The method also includes generating a pairwise dataset for the wind turbines pairs. Further, the method includes generating a first wake model based on the pairwise dataset and predicting a first farm-level performance parameter based on the first wake model. The method also includes operating the wind farm in a second operational mode and collecting operational data during the second operational mode. Moreover, the method includes predicting a first farm-level performance parameter for the second operational mode using the first wake model and the operational data from the second operational mode. The method further includes determining a second farm-level performance parameter during the second operational mode.
    Type: Application
    Filed: June 28, 2016
    Publication date: December 28, 2017
    Inventors: Megan Wilson, Stefan Kern, Siddhanth Chandrashekar, Akshay Ambekar
  • Publication number: 20170335827
    Abstract: The present disclosure is directed to a system and method for determining wake losses of a wind farm. The wind farm includes a plurality of wind turbines. The method includes operating the wind farm in a first operational mode. Another step includes collecting turbine-level data from at least one upstream wind turbines in the wind farm during the first operational mode. The method also includes estimating a freestream farm-level power output for the wind farm during first operational mode based, at least in part, on the collected turbine-level data. A further step includes measuring an actual farm-level power output for the wind farm for the first operational mode. Thus, the method also includes determining the wake losses of the wind farm for the first operational mode as a function of the measured actual farm-level power output and the estimated freestream farm-level power output.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 23, 2017
    Inventors: Megan Wilson, Stefan Kern, Akshay Krishnamurty Ambekar
  • Publication number: 20170328348
    Abstract: The present disclosure is directed to systems and methods for generating one or more farm-level power curves for a wind farm that can be used to validate an upgrade provided to the wind farm. The method includes operating the wind farm in a first operational mode. Another step includes collecting turbine-level operational data from one or more of the wind turbines in the wind farm during the first operational mode. The method also includes aggregating the turbine-level operational data into a representative farm-level time-series. Another step includes analyzing the operational data collected during the first second operational mode. Thus, the method also includes generating one or more farm-level power curves for the first operational mode based on the analyzed operational data.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 16, 2017
    Inventors: Megan Wilson, Stefan Kern, Siddhanth Chandrashekar, Dongjai Lee, Sara Delport, Akshay Ambekar, Subhankar Ghosh
  • Publication number: 20170252794
    Abstract: A metal-cutting machine for flat material parts comprises metal-cutting tools (21, 22, 23), held on a machine frame, and a support unit (10), on which a flat material part to be machined can be placed for a positioning in the metal-cutting machine. The support unit comprises a feed table (10), which is clamped remote from the beams and on one side about a pivot axis that is pivotable parallel to the beam orientation (39) and the free end (26) of which feed table in the parking position rests on a support surface (27) assigned to the lower beam (21), which support surface is connected via a sliding surface (28) to the top side (29) of the lower beam (21).
    Type: Application
    Filed: February 22, 2017
    Publication date: September 7, 2017
    Inventor: Stefan KERN
  • Publication number: 20170207036
    Abstract: An electrical component may include an electrically conductive element and electrical insulation that at least partially surrounds the element and without contact. A heat pipe may be surrounded by the insulation at least at one end and may partially protrude from the insulation, wherein the part of the heat pipe protruding from the insulation protrudes closer to the central element than the insulation.
    Type: Application
    Filed: June 25, 2015
    Publication date: July 20, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Vladimir DANOV, Stefan KERN, Jochen SCHÄFER
  • Patent number: 9617995
    Abstract: 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: Grant
    Filed: August 6, 2014
    Date of Patent: April 11, 2017
    Assignee: NETZSCH Pumpen & Systeme GmbH
    Inventors: 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: 9617992
    Abstract: 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: Grant
    Filed: November 3, 2014
    Date of Patent: April 11, 2017
    Assignee: NETZSCH Pumpen & Systeme GmbH
    Inventors: 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: 9611850
    Abstract: 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: Grant
    Filed: August 6, 2014
    Date of Patent: April 4, 2017
    Assignee: NETZSCH Pumpen & Systeme GmbH
    Inventors: 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: 9525295
    Abstract: In a method for operating an electric device, which includes a first storage battery pack, a second storage battery pack and an electrical load, no more than one storage battery pack is discharged at any given time to operate the load. In the process, the storage battery pack to be discharged is selected as a function of a temperature of the first storage battery pack and a temperature of the second storage battery pack and/or as a function of an internal resistance of the first storage battery pack and an internal resistance of the second storage battery pack.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: December 20, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Kern, Andreas Friese, Andreas Kynast, Philipp Zipf
  • Publication number: 20160032892
    Abstract: A method for controlling a wind farm includes: receiving temperature data associated with a plurality of locations along a sound path between the wind farm and a sound immission point from one or more sensors; estimating a propagation characteristic of the sound path based at least in part on the temperature data; predicting a noise level at the sound immission point based at least in part on the propagation characteristic; determining a control signal for one or more wind turbines in the wind farm based at least in part on the noise level; and using the control signal to control the one or more wind turbines.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 4, 2016
    Inventors: Andreas Herrig, Seongkyu Lee, Stefan Kern, Thierry Pascal Maeder, Benoit Philippe Petitjean, Roger Drobietz, Sujan Kumar Pal, Biju Nanukuttan
  • Patent number: 9028233
    Abstract: 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: Grant
    Filed: October 5, 2012
    Date of Patent: May 12, 2015
    Assignee: NETZSCH-Pumpen & Systeme GmbH
    Inventors: 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: 20150050174
    Abstract: 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: Application
    Filed: November 3, 2014
    Publication date: February 19, 2015
    Inventors: 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