Patents by Inventor Steffen Lang

Steffen Lang 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: 20190096570
    Abstract: A high voltage direct current energy transmission (HVDCT) air-core inductor includes at least one concentric winding layer having electric terminals are formed at its ends, and includes an electrostatic shield that has a layer of electrostatically dissipative material having a surface resistance ranging from 109 to 1014 ohm/square, wherein at least one end of the layer is provided with a collector electrode that extends essentially along the circumference of the end of the layer and that is to be connected to one of the terminals, and where the layer is designed as a spray coating on an outer surface of an exterior winding layer.
    Type: Application
    Filed: April 20, 2017
    Publication date: March 28, 2019
    Inventors: Peter GRIEBLER, Steffen LANG, Stephan RAUCHENZAUNER
  • Patent number: 10102989
    Abstract: An electric switching device may include at least two conductor elements that can be placed at a distance from one another and contacted with each other using a moving mechanism, and a housing that defines a circuit breaker chamber, wherein the housing is made of an insulator, and at least partly surrounds the conductor elements. At least one face of the housing may have a resistive coating made of a matrix material filled with a filler, wherein the coating has a sheet resistance between 108 and 1012 ohm at the operating field strength, and is conductingly connected to the conductor elements.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: October 16, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Werner Hartmann, Steffen Lang
  • Publication number: 20180145554
    Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a resistance coating for a corona shielding system in an electrical machine, for example a medium- or high-voltage machine, such as a generator in a power plant for generation of electrical energy, but also other electrical equipment having a relatively high rated voltage, such as transformers, bushings, cables etc. In some embodiments, a resistance coating for an electrical machine may include: an electrically insulating matrix; electrically conductive particles incorporated into the matrix in the form of a metal oxide in platelet form with a conductivity generated by doping. A percolation threshold of the resistance coating is exceeded in two orthogonal directions providing a conductivity of the resistance coating in the two orthogonal directions higher by at least a factor of 10, than in a third orthogonal direction.
    Type: Application
    Filed: May 19, 2016
    Publication date: May 24, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: Steffen Lang, Bastian Plochmann
  • Publication number: 20180005722
    Abstract: The present disclosure relates to a corona shielding material. The teachings thereof may be embodied in a material with an adjustable resistance and/or a corona shielding system which comprises an overhang corona shielding system (OCS). In some embodiments, a corona shielding material may include: a matrix; and a filler comprising doped and undoped particles in a given size fraction. A resistance of the corona shielding material is set by a concentration of doped particles in the filler particle size fraction.
    Type: Application
    Filed: November 25, 2015
    Publication date: January 4, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: Steffen Lang, Bastian Plochmann, Friedhelm Pohlmann, Christian Staubach
  • Patent number: 9859766
    Abstract: A rotor end-bell (2) for an electric generator, the rotor end-bell (2) being made at least in part of fiber-reinforced plastic. A rotor (1) and an electric generator (T) have at least one such rotor end-bell (2). The end-bell can be advantageously used in high-speed turbo generators.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: January 2, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Peter Gröppel, Steffen Lang, Claus Rohr
  • Patent number: 9843246
    Abstract: A method and device for forming corona shielding on a winding bar for high-voltage machines has end corona shielding in a first section and outer corona shielding in a second section that adjoins the first section. The method includes providing a first composition, including a carrier material and a first filler therein and a first electrical resistance; providing a second composition, including the same carrier material and a second filler therein and a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, doping of which determines electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: December 12, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Harald Griem, Steffen Lang, Friedhelm Pohlmann, Christian Staubach
  • Publication number: 20170294817
    Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system for an electrical machine. For example, a corona shielding system may include: an outer corona shield and an overhang corona shielding. The outer corona shielding and the overhang corona shielding may comprise a first corona shielding material having a nonlinear field strength-dependent electrical resistance.
    Type: Application
    Filed: August 3, 2015
    Publication date: October 12, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Bernhard Klaussner, Jiri Lang, Steffen Lang, Alexander Litinsky, Guido Schmidt, Christian Schulz-Drost, Klaus Schaefer, Christian Staubach
  • Publication number: 20170288488
    Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially an outer corona shielding system, for an electrical machine. For example, a corona shielding system may include: a polymeric matrix; particles disposed in the matrix, including a mica-coated core and a layer of metal oxide disposed on the core; and a surface functionalization material disposed on a surface of the particles for binding to the matrix.
    Type: Application
    Filed: August 3, 2015
    Publication date: October 5, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Bernhard Klaussner, Jiri Lang, Steffen Lang, Alexander Litinsky, Guido Schmidt, Christian Schulz-Drost, Klaus Schaefer, Christian Staubach
  • Publication number: 20170288487
    Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially for an electrical machine, e.g., a high-voltage machine, such as a generator for generation of electrical energy, an electric motor, or another piece of electrical equipment having a relatively high rated voltage, e.g., a transformer or a bushing or a cable. A corona shielding system may include: a polymeric matrix; and filler particles comprising mica surrounded by a layer of at least one ceramic metal oxide. The filler particles may be distributed throughout the polymeric matrix.
    Type: Application
    Filed: August 3, 2015
    Publication date: October 5, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Bernhard Klaussner, Jiri Lang, Steffen Lang, Alexander Litinsky, Guido Schmidt, Christian Schulz-Drost, Klaus Schaefer, Christian Staubach
  • Publication number: 20170213675
    Abstract: An electric switching device may include at least two conductor elements that can be placed at a distance from one another and contacted with each other using a moving mechanism, and a housing that defines a circuit breaker chamber, wherein the housing is made of an insulator, and at least partly surrounds the conductor elements. At least one face of the housing may have a resistive coating made of a matrix material filled with a filler, wherein the coating has a sheet resistance between 108 and 1012 ohm at the operating field strength, and is conductingly connected to the conductor elements.
    Type: Application
    Filed: July 2, 2015
    Publication date: July 27, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Werner Hartmann, Steffen Lang
  • Publication number: 20170181229
    Abstract: The invention relates to a heating circuit for induction heating coils of an induction cooking hob and to an induction cooking hob including such a heating circuit. In the heating circuit, there are in each case two auxiliary half bridges interconnected to excite a respective resonant circuit for an induction heating coil such that the resonant circuit is excited by a full bridge. Thereby, lost heat is considerably reduced. Via a connecting device the auxiliary half bridges can be controlled to excite induction heating coils, which are partly or fully covered by a cooking vessel.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 22, 2017
    Inventors: Stephane Lomp, Steffen Lang
  • Publication number: 20170077775
    Abstract: An insulating tape in the form of a particle composite for an electrical insulating tape, use of such insulating tape as insulation, and the production of the insulating tape are disclosed. To produce the insulating tape, electrically insulating, platelet-shaped particles are connected by an electrically insulating binder to an electrical insulating material in the form of an at least partially porous insulating tape. The insulating tape may be windable on a conductor structure when wound under exerted tension force, namely without addition of a materially additionally impeding heat flow. A thermal conductivity which is greater relative to the prior art may help prevent heat accumulation and total failures, e.g., of main insulation.
    Type: Application
    Filed: February 13, 2015
    Publication date: March 16, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Hermann Bödinger, Florian Eder, Steffen Lang, Carsten Schuh
  • Publication number: 20170072477
    Abstract: A rotary tool for machining workpieces, comprising at least one main body with a clamping segment, a tool head comprising a cutting region, and at least one coolant channel for feeding a cooling and lubricating fluid into the cutting region. At least one partial surface section of the cutting region forms a hardened region, which covers and/or defines the coolant channel and is surface-hardened. A method for producing a rotary tool.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 16, 2017
    Applicant: GÜHRING KG
    Inventors: Jochen BITZER, Steffen LANG
  • Patent number: 9544947
    Abstract: By performing a method for transmitting to a reading device data of a sensor that is allocated to an inductively heated cooking vessel, a high frequency control voltage is generated from a mains alternating voltage by means of a converter, wherein the high frequency control voltage is applied to an oscillator circuit having an induction heating coil in order to generate a high frequency magnetic alternating field for heating the cooking vessel.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: January 10, 2017
    Assignee: E.G.O. ELEKTRO-GERAETEBAU GMBH
    Inventor: Steffen Lang
  • Publication number: 20160374236
    Abstract: A corona shielding paper for use in a corona shielding system for an electric machine, e.g. a high-voltage machine, may be produced by compacting partial discharge-resistant, planar, conductive particles but can include both reinforcement fibers and a woven fabric.
    Type: Application
    Filed: February 26, 2015
    Publication date: December 22, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Florian Eder, Bernhard Klaussner, Jiri Lang, Steffen Lang, Alexander Litinsky, Guido Schmidt, Christian Schulz-Drost, Klaus Schaefer, Christian Staubach
  • Publication number: 20160369110
    Abstract: A surface coating for lightning protection is embodied as a composite material including a matrix formed from a polysilazane or of a polysiloxane, and filled with lamellar, ceramic particles having an electrically conductive coating of metal oxide. The surface coating may be applied to a blade of a wind turbine by applying the conductive coating in liquid form to the blade, allowing the surface coating to harden at room temperature, and pyrolyzing the surface coating via short periods at temperatures up to 700° C. to form a glassy, electrically conductive coating that is resistant to temperature changes.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 22, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Juergen Huber, Steffen Lang, Bastian Plochmann
  • Publication number: 20160374237
    Abstract: A corona shielding system for an electric machine, for example a high-voltage machine, such as a generator, for generating electrical energy, an electric motor or else other electric operating means having a relatively high rated voltage, such as transformers, bushings, cables, etc, is disclosed. The corona shielding system may include a filler mixture including both planar and spherical particles. Therefore, the electrical conductivity, which is good in the presence of only planar particles in two spatial directions but is very poor in the third, can be adjusted anisotropically in a targeted manner.
    Type: Application
    Filed: February 25, 2015
    Publication date: December 22, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Bernhard Klaussner, Jiri Lang, Steffen Lang, Alexander Litinsky, Guido Schmidt, Christian Schulz-Drost, Klaus Schaefer, Christian Staubach
  • Patent number: 9424967
    Abstract: A varistor, or voltage-limiting composition has a polymer matrix and a particulate filler containing a partially conductive material applied to an electrically non-conductive carrier material. The carrier material has a lower density than the partially conductive material, so that the settling rate of the filler in the polymer matrix is reduced. The voltage-limiting composition can therefore also be used as a lacquer or for prepreg materials. A body which acts as a varistor may be produced using a composition of this kind by a method that includes annealing. The varistor may be used for surge arresters, in particular in medium-voltage systems, low-voltage systems, cable connections and cable fasteners.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 23, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Peter Gröppel, Steffen Lang
  • Patent number: 9396837
    Abstract: An electrical conduction device is provided having an electrically conductive conduction element and an electrically insulating sheathing surrounding said conduction element at least in regions. An overhang corona shielding in the form of a coating composed of a material having a resistivity that increases towards an end of the sheathing is arranged on the sheathing at an outer side. An overhang corona shielding arrangement and a method for producing an overhang corona shielding are also provided.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: July 19, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Kempen, Steffen Lang
  • Publication number: 20160027549
    Abstract: A resistance covering for a DC insulation system may be a matrix material with particles embedded therein, the particles having an aspect ratio greater than 1. The matrix material is flexible to such an extent that the particles align depending on an electric field strength. The particles can align in the electric field and thus a breakdown voltage of the resistance covering is increased. A DC insulation system may have the resistance covering.
    Type: Application
    Filed: January 15, 2014
    Publication date: January 28, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Steffen LANG