Patents by Inventor Juergen Kurth

Juergen Kurth 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: 10895382
    Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: January 19, 2021
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Vishnu R. Unni, Sujith Ramanpillai Indusekharan Nair, Abin Krishnan, Norbert Marwan, Jürgen Kurths
  • Patent number: 10883605
    Abstract: A seal assembly for sealing a shaft configured to rotate in a main direction, the seal assembly including a stiffener and at least one elastomer seal member connected to the stiffener, the elastomer seal member including a seal region having a seal section configured to seal against a shaft and seal a to-be-sealed space, the seal section including a first screw thread web structure configured to pump a leakage fluid toward the to-be-sealed space when the shaft rotates in the main direction, a second annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, and a third annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, wherein the second web structure is axially spaced from the third web structure.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 5, 2021
    Assignee: Aktiebolaget SKF
    Inventors: Juergen Kurth, Christoph Passow
  • Publication number: 20200345616
    Abstract: The present invention relates to a composition comprising a polymer, wherein this polymer is water-soluble and has a melting point of at least 145° C. and comprises sulfonic acid groups, and an organic amine having at least two amino groups, and optionally further cosmetic ingredients. Furthermore, the present invention relates to a process for restyling human hair comprising applying to the human hair a composition comprising a polymer, wherein this polymer is water-soluble and has a melting point of at least 145° C. and comprises sulfonic acid groups, and an organic amine, and optionally further cosmetic ingredients, thereafter heat-treating the hair, together with the composition on its surface, thereafter allowing the hair to cool down to a temperature of below 100° C., and thereafter changing the hair style by heat-treating the hair. Furthermore, the present invention relates to the use of the said polymer or of the said composition for restyling human hair.
    Type: Application
    Filed: November 19, 2018
    Publication date: November 5, 2020
    Inventors: Juergen Falkowski, Andrea Tomlinson, Helena Wiethoff, Nicole Kurth
  • Publication number: 20200191890
    Abstract: A system and method are provided for operating a magnetic resonance tomograph. A transmitter of the magnetic resonance tomograph transmits a predetermined test pulse with a reduced power. The magnetic resonance tomograph receives the test pulse with the local coil. A controller compares the received test pulse with a predetermined pulse response and emits a warning signal when the received test signal differs from the predetermined pulse response.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 18, 2020
    Inventors: Jürgen Nistler, Volker Matschl, Stephan Biber, Rainer Kurth, Christian Wünsch, Georg Martschenko
  • Publication number: 20190293182
    Abstract: A seal assembly for sealing a shaft configured to rotate in a main direction, the seal assembly including a stiffener and at least one elastomer seal member connected to the stiffener, the elastomer seal member including a seal region having a seal section configured to seal against a shaft and seal a to-be-sealed space, the seal section including a first screw thread web structure configured to pump a leakage fluid toward the to-be-sealed space when the shaft rotates in the main direction, a second annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, and a third annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, wherein the second web structure is axially spaced from the third web structure.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventors: Juergen Kurth, Christoph Passow
  • Publication number: 20190264916
    Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Inventors: VISHNU R. UNNI, SUJITH RAMANPILLAI INDUSEKHARAN NAIR, ABIN KRISHNAN, NORBERT MARWAN, JÜRGEN KURTHS
  • Patent number: 10385976
    Abstract: A seal assembly for sealing a shaft configured to rotate in a main direction, the seal assembly including a stiffener and at least one elastomer seal member connected to the stiffener, the elastomer seal member including a seal region having a seal section configured to seal against a shaft and seal a to-be-sealed space, the seal section including a first screw thread web structure configured to pump a leakage fluid toward the to-be-sealed space when the shaft rotates in the main direction, a second annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, and a third annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, wherein the second web structure is axially spaced from the third web structure.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: August 20, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Juergen Kurth, Christoph Passow
  • Patent number: 10197103
    Abstract: A sealing arrangement for sealing a first chamber against a second chamber, the sealing arrangement being located between a first machine element and a second machine element. A relative movement occurs between the two machine elements. The sealing arrangement comprises a sealing element which is equipped with at least one sealing lip. The sealing lip(s) is/are held by the sealing element and is/are fixed by the sealing element at one of the machine elements. The sealing lip(s) is/are in sliding contact with the other machine element. The sealing arrangement comprises a lip element that is fixed with one of the machine elements and is in sliding contact with the other machine element. The lip element comprises a conductive element for establishing electrical conductivity of the lip element, so that electrical conductivity is established between the two machine elements by the lip element in an effective an economical manner.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: February 5, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Alain Gezault, Juergen Kurth
  • Publication number: 20180266563
    Abstract: A seal assembly includes a carrier element, and at least one seal element disposed on the carrier element, the seal element including a seal section configured to abut against a shaft. The seal section includes first and second axially spaced, radially inwardly projecting annular ridges configured to sealingly abut against the shaft at least when the shaft is not rotating relative to the seal element, and first and second sets of circumferentially spaced, radially inwardly projecting pumping elements disposed axially between the first annular ridge and the second annular ridge. The pumping elements of the first set of pumping elements have a first angle with respect to the circumferential direction at a first point and a second angle, different from the first angle, with respect to the circumferential direction at a second point.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 20, 2018
    Inventor: Juergen Kurth
  • Publication number: 20180106379
    Abstract: A seal assembly for sealing a shaft configured to rotate in a main direction, the seal assembly including a stiffener and at least one elastomer seal member connected to the stiffener, the elastomer seal member including a seal region having a seal section configured to seal against a shaft and seal a to-be-sealed space, the seal section including a first screw thread web structure configured to pump a leakage fluid toward the to-be-sealed space when the shaft rotates in the main direction, a second annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, and a third annular, circumferentially extending web structure configured to sealingly abut on the shaft at least when the shaft is not rotating, wherein the second web structure is axially spaced from the third web structure.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 19, 2018
    Inventors: Juergen Kurth, Christoph Passow
  • Patent number: 9841105
    Abstract: A sealing lip seals a first space from a second space with respect to a liquid medium present in the first space. The sealing lip has abutment surface configured to abut on a sealing surface of a component that is movable relative to the sealing lip along a direction of movement. A groove is defined in the abutment surface and pumps any liquid medium present in the groove towards the first space along the direction of movement. The groove extends completely within the abutment surface and is enclosed by the abutment surface, such that it does not intersect either lateral edge of the sealing lip.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: December 12, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Helmut Benedix, Juergen Kurth, Juergen Netzer, Christoph Passow, Willy Seewald
  • Patent number: 9709173
    Abstract: A radial-shaft sealing assembly includes a sealing lip disposed on a support ring. A cylindrical portion of the sealing lip that abuts on a rotatable shaft contains an elastomeric material and has a profiling for pumping oil or lubricant back to an oil side of the sealing assembly. The profiling includes first and second annular ridges disposed in parallel, and first and second groups of radially-projecting pumping elements disposed therebetween and distributed around the circumference of the cylindrical portion. Each pumping element extending at an angle (?) to the circumferential direction (U) of the cylindrical portion, but the first group of pumping elements has an opposite orientation to the second group of pumping elements.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 18, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Juergen Kurth
  • Patent number: 9556959
    Abstract: A sleeve is configured to be fitted onto a rotating shaft and the sleeve includes a tubular portion extending in an axial direction and having a cylindrical-shaped sealing guide surface configured to contact a radial shaft seal. A flange extends outward from the tubular portion at least substantially in a radial direction that is perpendicular to the axial direction. A first target break line is defined between the tubular portion and the flange and is configured to facilitate separation of the flange from the tubular portion. Further, a second target break line is defined in or on the flange and is configured to facilitate tearing of the flange at least substantially in the radial direction of the flange up to the first target break line.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 31, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: John P Crawford, Juergen Kurth
  • Patent number: 9410555
    Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: August 9, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Helmut Benedix, Juergen Kurth, Willy Seewald, Roland Worsley
  • Publication number: 20160215824
    Abstract: A sealing arrangement for sealing a first chamber against a second chamber, the sealing arrangement being located between a first machine element and a second machine element. A relative movement occurs between the two machine elements. The sealing arrangement comprises a sealing element which is equipped with at least one sealing lip. The sealing lip(s) is/are held by the sealing element and is/are fixed by the sealing element at one of the machine elements. The sealing lip(s) is/are in sliding contact with the other machine element. The sealing arrangement comprises a lip element that is fixed with one of the machine elements and is in sliding contact with the other machine element. The lip element comprises a conductive element for establishing electrical conductivity of the lip element, so that electrical conductivity is established between the two machine elements by the lip element in an effective an economical manner.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 28, 2016
    Applicant: Aktiebolaget SKF
    Inventors: Alain GEZAULT, Juergen KURTH
  • Patent number: 9322475
    Abstract: A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: April 26, 2016
    Assignee: AB SKF
    Inventors: Jürgen Kurth, Jürgen Netzer, Wolfgang Irmen, Willy Seewald
  • Patent number: 9284863
    Abstract: A valve stem seal (1) seals a valve stem (4) that is reciprocally movable in an axial direction. The valve stem seal includes a base body (8) that is connectable with a valve stem guide (6). A first seal lip (10) is resiliently positioned relative to the base body via an elastic connection (16) and seals the valve stem relative to an oil chamber (24). A second seal lip (12) is spaced in the axial direction (2) from the first seal lip and seals the valve stem relative to a gas chamber. The second seal lip is also resiliently positioned relative to the base body via the elastic connection.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 15, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Juergen Kurth, Juergen Netzer
  • Patent number: 9121505
    Abstract: A seal assembly seals a first portion of a machine part relative to a second portion of the machine part. The seal assembly includes at least one seal element that contacts the machine part or contacts a component connected with the machine part or that extends with a gap relative to the machine part or to the component connected with the machine part. At least one of the seal element, the machine part and the component connected with the machine part is provided or coated with a material, which has super hydrophobic properties, in the area of the seal element.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: September 1, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Jürgen Kurth, Jochen Lorenscheit
  • Publication number: 20150042044
    Abstract: A sealing assembly includes a seal support having a support ring made from an elastomeric material, at least one seal element having a ring made from a polymer material, and an abutment ring against which a radial portion of the seal element axially abuts. The seal element is connected in a materially-bonded manner to the support ring along a first radially outer portion of the seal element, and the seal element axially abuts on the abutment ring along a second radially inner portion of the seal element. The seal element and the abutment ring are free of any connection along the second radially inner portion of the seal element.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 12, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Helmut Benedix, Juergen Kurth, Willy Seewald, Roland Worsley
  • Publication number: 20140312571
    Abstract: A radial-shaft sealing assembly includes a sealing lip disposed on a support ring. A cylindrical portion of the sealing lip that abuts on a rotatable shaft contains an elastomeric material and has a profiling for pumping oil or lubricant back to an oil side of the sealing assembly. The profiling includes first and second annular ridges disposed in parallel, and first and second groups of radially-projecting pumping elements disposed therebetween and distributed around the circumference of the cylindrical portion. Each pumping element extending at an angle (?) to the circumferential direction (U) of the cylindrical portion, but the first group of pumping elements has an opposite orientation to the second group of pumping elements.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 23, 2014
    Inventor: Juergen KURTH