Patents by Inventor Stefan Karlsson

Stefan Karlsson 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: 11881743
    Abstract: A rotor arrangement for an electric motor is disclosed. The rotor arrangement comprises a first rotor comprising a hollow cylinder and a cylindrical rotor stack shrink-fitted onto the hollow cylinder. The first rotor comprises a first end plate attached to a first end portion of the hollow cylinder. The rotor arrangement further comprises a rotor shaft comprising a first shaft member and a second shaft member arranged coaxially to the first shaft member. The first shaft member is connected to a connection portion of the first end plate. The rotor arrangement comprises a second rotor connected to the second shaft member. The present disclosure further relates to an electric propulsion motor arrangement, a vehicle, and a set of rotors for electric motors.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: January 23, 2024
    Assignee: Scania CV AB
    Inventors: Christian Ness, Stefan Karlsson, Christer Wallen, Jörgen Forsberg
  • Patent number: 11834788
    Abstract: The present invention relates to a crescent former for producing tissue paper, the former comprising a forming section (A), a press section (B) and a drying section (C), wherein the crescent former further comprises a felt fabric (41) for carrying the stock from the forming nip (15) of the forming section (A) to the press nip (22) of the press section (B), and the felt fabric (41) being configured to carry the stock to the press nip (22) where the stock is transferred to the drying section (C), wherein further the felt fabric (41) is configured to be returned from the press nip (22) to the forming nip (15) in a return section (D) such that the felt fabric (41) forms an endless loop, wherein the return section (D) comprises a cleaning station (42), of which at least a part is arranged in a negative machine direction (?MD) in relation to a center line (R) of the forming roll (12).
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 5, 2023
    Assignee: VALMET AB
    Inventors: Karl Adamsson, Stefan Söderberg, Stefan Karlsson
  • Publication number: 20230339314
    Abstract: A transmission unit, a vehicle powertrain comprising the transmission unit and a vehicle are disclosed. The transmission unit comprises a first transmission shaft comprising a first gear wheel, and a second transmission shaft comprising a second gear wheel and a third gear wheel. The second gear wheel is arranged to cooperate with the first gear wheel. The transmission unit further comprises a third transmission shaft comprising a fourth gear wheel, the fourth gear wheel being arranged to cooperate with the third gear wheel. The third transmission shaft further comprises a fifth gear wheel arranged to be selectively connectable to the third transmission shaft for rotation therewith. The fifth gear wheel is arranged to cooperate with the second gear wheel. The transmission unit may be incorporated in a transmission arrangement further comprising a planetary gearbox unit.
    Type: Application
    Filed: July 27, 2021
    Publication date: October 26, 2023
    Inventors: Stefan KARLSSON, Jörgen FORSBERG, Tomas LÖFWALL, Per ARNELÖF, Tobias MÜLLER
  • Publication number: 20230341027
    Abstract: A transmission unit, a vehicle powertrain and a vehicle are provided. The transmission unit comprises a first transmission shaft forming an input shaft of the transmission unit, and a second transmission shaft comprising a first shaft portion and a second shaft portion. The first shaft portion is rotatably connected to the first transmission shaft via a first gear wheel pair. The transmission unit further comprises a third transmission shaft rotatably connectable to the first shaft portion via a second gear wheel pair and rotatably connectable to the second shaft portion via a third gear wheel pair. The second and third gear wheel pairs are arranged at a distance from each other in a direction parallel to the longitudinal axis of the second transmission shaft such that, when the transmission unit is arranged in the vehicle powertrain, an electrical machine may be arranged therebetween.
    Type: Application
    Filed: July 27, 2021
    Publication date: October 26, 2023
    Inventors: Stefan KARLSSON, Jörgen FORSBERG, Tomas LÖFWALL, Per ARNELÖF, Tobias MÜLLER
  • Publication number: 20230212819
    Abstract: The present invention relates to a crescent former for producing tissue paper, the former comprising a forming section (A), a press section (B) and a drying section (C), wherein the crescent former further comprises a felt fabric (41) for carrying the stock from the forming nip (15) of the forming section (A) to the press nip (22) of the press section (B), and the felt fabric (41) being configured to carry the stock to the press nip (22) where the stock is transferred to the drying section (C), wherein further the felt fabric (41) is configured to be returned from the press nip (22) to the forming nip (15) in a return section (D) such that the felt fabric (41) forms an endless loop, wherein the return section (D) comprises a cleaning station (42), of which at least a part is arranged in a negative machine direction (-MD) in relation to a center line (R) of the forming roll (12).
    Type: Application
    Filed: August 27, 2021
    Publication date: July 6, 2023
    Inventors: Karl ADAMSSON, Stefan SÖDERBERG, Stefan KARLSSON
  • Publication number: 20230076200
    Abstract: A rotor arrangement for an electric motor is disclosed. The rotor arrangement comprises a first rotor comprising a hollow cylinder and a cylindrical rotor stack shrink-fitted onto the hollow cylinder. The first rotor comprises a first end plate attached to a first end portion of the hollow cylinder. The rotor arrangement further comprises a rotor shaft comprising a first shaft member and a second shaft member arranged coaxially to the first shaft member. The first shaft member is connected to a connection portion of the first end plate. The rotor arrangement comprises a second rotor connected to the second shaft member. The present disclosure further relates to an electric propulsion motor arrangement, a vehicle, and a set of rotors for electric motors.
    Type: Application
    Filed: February 11, 2021
    Publication date: March 9, 2023
    Inventors: Christian Ness, Stefan Karlsson, Christer Wallen, Jörgen Forsberg
  • Publication number: 20220242217
    Abstract: Disclosed is a modular transmission platform for a vehicle. The modular transmission platform comprises a first transmission shaft with at least one input shaft configured to be connected to at least one propulsion unit, a second transmission shaft rotatably connected to the first transmission shaft via a first transmission unit, and a third transmission shaft with a first output shaft configured to be connected to a propeller shaft. The third transmission shaft is rotatably connected to the second transmission shaft via a second transmission unit. The modular transmission platform comprises at least one second output shaft, configured for providing torque to equipment connected to the at least one second output shaft. The at least one input shaft and the first output shaft extend from the modular transmission platform in the same direction.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 4, 2022
    Applicant: Scania CV AB
    Inventors: Stefan KARLSSON, Jörgen FORSBERG, Tomas LÖFWALL, Christian NESS
  • Publication number: 20220153120
    Abstract: The invention relates to a powertrain for a vehicle. The powertrain comprising: at least one propulsion unit; a transmission connected to the at least one propulsion unit; a propeller shaft connected to the transmission, and at least one drive shaft of a rear axle, which at least one drive shaft is connected to the propeller shaft, so that the propeller shaft extends between the transmission and the at least one drive shaft. The at least one propulsion unit is arranged in a position between the transmission and the rear axle in a longitudinal direction of the vehicle. The invention also relates to a vehicle.
    Type: Application
    Filed: February 12, 2020
    Publication date: May 19, 2022
    Applicant: Scania CV AB
    Inventors: Stefan KARLSSON, Jörgen FORSBERG, Tomas LÖFWALL, Christian NESS
  • Patent number: 11296580
    Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 5, 2022
    Assignee: Scania CV AB
    Inventors: Jörgen Engström, Stefan Karlsson
  • Patent number: 11254835
    Abstract: Halogen-free decorative surface covering compositions comprising a polymer blend, the polymer blend comprising: a) at least one thermoplastic elastomer, the thermoplastic elastomer being a block copolymer comprising hard and soft sequences, wherein the hard sequence is a (co)polymer of one or more vinyl aromatic monomer(s) and wherein the soft sequence is a (co)polymer of one or more alkylene(s) or of a mixture of one or more alkylene(s) and one or more vinylaromatic monomers; b) at least one thermoplastic polyurethane.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: February 22, 2022
    Assignee: Tarkett GDL
    Inventors: Helena Johansson, Roland Karlsson, Stefan Karlsson, Nils Wallnäs
  • Patent number: 11200763
    Abstract: It is provided a method for providing a credential set to a credential carrier for gaining access to a physical space. The method is performed in a credential provider and comprises the steps of: preloading a plurality of credential sets from a server into a local memory, each credential set being usable to gain access to a physical space and each credential set comprising a first validity time; wherein, when a network connection between the credential provider and the server is unavailable, performing the following steps: obtaining a request to provide a credential set for a physical space; retrieving a credential set from the local memory, the credential set being usable to gain access to the physical space indicated in the request; and providing, as long as the first validity time of the credential set has not expired, the retrieved credential set to a credential carrier.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: December 14, 2021
    Assignee: ASSA ABLOY AB
    Inventors: Martin Giebat, Jan Elfström, Marius Lauritzen, Colin Johansen, Johan Häggbom, Ewan Dunlop, Per Nordbeck, Fredrik Allansson, Johan Gärde, Stefan Karlsson, Peter Törnhult, Christoffer Hellgren, Claes Jonsson, Stig Lagerstedt
  • Publication number: 20210241430
    Abstract: Methods, systems, and computer program products for improving the generation of a 3D mesh texture include extracting a plurality of high frequency image components and a plurality of low frequency image components from a plurality of two-dimensional (2D) images of a three-dimensional (3D) object captured at respective points of perspective of the 3D object, generating a low frequency texture atlas from the plurality of low frequency image components, generating a high frequency texture atlas from the plurality of high frequency image components by performing a texturing operation comprising seam leveling on a subset of the plurality of high frequency image components, and generating the texture atlas by merging the low frequency texture atlas with the high frequency texture atlas.
    Type: Application
    Filed: September 13, 2018
    Publication date: August 5, 2021
    Applicant: Sony Corporation
    Inventors: Fredrik MATTISSON, Pal SZASZ, Stefan KARLSSON
  • Patent number: 10992205
    Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 27, 2021
    Assignee: Scania CV AB
    Inventors: Jörgen Engström, Stefan Karlsson
  • Publication number: 20210089984
    Abstract: Embodiments described herein generally relate to a customizable management system for various unique packaging production architectures. The customizable management system can be configurable to universally integrate with various systems within a variety of unique packaging production architectures. For example, the customizable management system can comprise one or more importer modules that receive package creation requests and translate the requests into a second format that is readable by one or more staging and selection modules. The system may also comprise staging and selection modules that are configured to identify within each translated packaging creation order one or more final packaging parameters and identify a workgroup that is capable of meeting the one or more final packaging parameters. The system may also comprise one or more machine group modules in communication with one or more packaging stations.
    Type: Application
    Filed: December 2, 2020
    Publication date: March 25, 2021
    Inventors: Chris R. Featherstone, Jeffrey Lee Rasmussen, Andreas Harnesk, Ryan Osterhout, Stefan Karlsson, Robert Lingstyul, Clinton P. Smith
  • Patent number: 10956099
    Abstract: A computer-implemented method of automatically optimizing a print production process, comprising the operations of: receiving a printed matter specification, comprising data regarding at least one printed matter, as input data from a remote device; and determining an optimized print production specification on basis of the printed matter specification and print production resources data; wherein the operation of determining an optimized print production specification comprises: fetching print production resources data, comprising printing press data regarding at least one available printing press; determining all possible signatures by means of the printed matter specification; determining, for each printing press, all possible print sheet sizes and print areas, by means of the printing press data; determining all possible impositions by means of at least the signatures and the print areas; and determining an optimized production specification by means of at least the impositions, the print areas, and at l
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 23, 2021
    Assignee: ARIFIQ DEVELOPMENT AB
    Inventor: Stefan Karlsson
  • Patent number: 10922637
    Abstract: Embodiments described herein generally relate to a customizable management system for various unique packaging production architectures. The customizable management system can be configurable to universally integrate with various systems within a variety of unique packaging production architectures. For example, the customizable management system can comprise one or more importer modules that receive package creation requests and translate the requests into a second format that is readable by one or more staging and selection modules. The system may also comprise staging and selection modules that are configured to identify within each translated packaging creation order one or more final packaging parameters and identify a workgroup that is capable of meeting the one or more final packaging parameters. The system may also comprise one or more machine group modules in communication with one or more packaging stations.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 16, 2021
    Assignee: Packsize LLC
    Inventors: Chris R. Featherstone, Jeffrey Lee Rasmussen, Andreas Harnesk, Ryan Osterhout, Stefan Karlsson, Robert Lingstyul, Clinton P Smith
  • Publication number: 20210017416
    Abstract: Halogen-free decorative surface covering compositions comprising a polymer blend, the polymer blend comprising: a) at least one thermoplastic elastomer, the thermoplastic elastomer being a block copolymer comprising hard and soft sequences, wherein the hard sequence is a (co)polymer of one or more vinyl aromatic monomer(s) and wherein the soft sequence is a (co)polymer of one or more alkylene(s) or of a mixture of one or more alkylene(s) and one or more vinylaromatic monomers; b) at least one thermoplastic polyurethane.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Applicant: Tarkett GDL
    Inventors: Helena Johansson, Roland Karlsson, Stefan Karlsson, Nils Wallnäs
  • Publication number: 20210012598
    Abstract: It is provided a method for providing a credential set to a credential carrier for gaining access to a physical space. The method is performed in a credential provider and comprises the steps of: preloading a plurality of credential sets from a server into a local memory, each credential set being usable to gain access to a physical space and each credential set comprising a first validity time; wherein, when a network connection between the credential provider and the server is unavailable, performing the following steps: obtaining a request to provide a credential set for a physical space; retrieving a credential set from the local memory, the credential set being usable to gain access to the physical space indicated in the request; and providing, as long as the first validity time of the credential set has not expired, the retrieved credential set to a credential carrier.
    Type: Application
    Filed: December 14, 2018
    Publication date: January 14, 2021
    Inventors: Martin GIEBAT, Jan ELFSTRÖM, Marius LAURITZEN, Colin JOHANSEN, Johan HÄGGBOM, Ewan DUNLOP, Per NORDBECK, Fredrik ALLANSSON, Johan GÄRDE, Stefan KARLSSON, Peter TÖRNHULT, Christoffer HELLGREN, Claes JONSSON, Stig LAGERSTEDT
  • Publication number: 20200389072
    Abstract: The present invention relates to an arrangement for cooling of an electrical machine. The electrical machine comprises a rotor rotatably arranged around a rotation axis, a stator including a stator winding arranged radially outside of the rotor, a housing enclosing the rotor and the stator, at least one drain hole configured to drain a cooling fluid from the housing, at least one spraying device configured to spray cooling fluid on the stator winding and a pump configured to pump cooling fluid to the spraying device. The arrangement comprises a control unit, which is configured, when the electrical machine is in operation, to receive information of the temperature in at least one position of the stator winding and to control the pump such that it pumps a flow rate of the cooling fluid to the spraying device, which is related to the estimated temperature of the stator winding.
    Type: Application
    Filed: February 7, 2017
    Publication date: December 10, 2020
    Applicant: SCANIA CV AB
    Inventors: Jörgen ENGSTRÖM, Stefan KARLSSON
  • Publication number: 20200167102
    Abstract: A computer-implemented method of automatically optimizing a print production process, comprising the operations of: receiving a printed matter specification, comprising data regarding at least one printed matter, as input data from a remote device; and determining an optimized print production specification on basis of the printed matter specification and print production resources data; wherein the operation of determining an optimized print production specification comprises: fetching print production resources data, comprising printing press data regarding at least one available printing press; determining all possible signatures by means of the printed matter specification; determining, for each printing press, all possible print sheet sizes and print areas, by means of the printing press data; determining all possible impositions by means of at least the signatures and the print areas; and determining an optimized production specification by means of at least the impositions, the print areas, and at l
    Type: Application
    Filed: March 9, 2017
    Publication date: May 28, 2020
    Inventor: Stefan KARLSSON