Patents by Inventor Johan Berg

Johan Berg 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: 20240121654
    Abstract: A first network node, a second network node and methods therein, for handling baseband processing of signals communicated with wireless devices in a wireless network. The first network node communicates a first type of signals with a first wireless device and performs a first part of baseband processing of the first type of signals using a non-GPP implemented processor. The first network node also communicates the first type of signals with the second network node for a second part of baseband processing of the first type of signals using a GPP implemented processor. The first network node further communicates a second type of signals with a second wireless device and performs both of said first and second parts of baseband processing of the second type of signals using the non-GPP implemented processor.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 11, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chenguang LU, Johan ZHANG, Miguel BERG, Daniel CEDERHOLM
  • Publication number: 20230405875
    Abstract: A hand-held electrically powered cut-off tool (100) for cutting concrete and stone by a rotatable cutting disc (105), the cut-off tool (100) comprising an electric motor (130) arranged to be controlled by a control unit (110) via a motor control interface (120), wherein the control unit (110) is arranged to obtain data indicative of an angular velocity of the cutting disc (105), and to detect a kickback condition based on a decrease in angular velocity, wherein the control unit (110) is arranged to control an electromagnetic braking of the electric motor (130) in response to detecting a kickback condition, wherein the control unit (110) is arranged to determine an angular acceleration associated with the electric motor (130), and to detect the kickback condition based on a comparison between the determined angular acceleration and a configurable detection threshold.
    Type: Application
    Filed: September 20, 2021
    Publication date: December 21, 2023
    Inventors: Magnus Rosén, Victor Johansson, David Dufke, Johan Berg
  • Publication number: 20230390963
    Abstract: A hand-held electrically powered cut-off tool (100) for cutting concrete and stone by a rotatable cutting disc (105), the cut-off tool (100) comprising an electric motor (130) arranged to be controlled by a control unit (110) via a motor control interface (120), wherein the control unit (110) is arranged to obtain data indicative of an angular velocity of the cutting disc (105), and to detect a kickback condition based on a decrease in angular velocity, wherein the control unit (110) is arranged to determine an angular acceleration associated with the electric motor (130), and to detect the kickback condition based on a comparison between the determined angular acceleration and a detection threshold, wherein the detection threshold is configured at an angular acceleration between 5000 rad/s2 and 35000 rad/s2, and preferably between 10000 rad/s2 and 30000 rad/s2, and more preferably between 20000 rad/s2 and 30000 rad/s2.
    Type: Application
    Filed: September 20, 2021
    Publication date: December 7, 2023
    Inventors: Magnus Rosén, Victor Johansson, David Dufke, Johan Berg
  • Publication number: 20230396056
    Abstract: A hand-held electrically powered cut-off tool (100) for cutting concrete and stone by a rotatable cutting disc (105), the cut-off tool (100) comprising an electric motor (130) arranged to be controlled by a control unit (110) via a motor control interface (120), wherein the control unit (110) is arranged to obtain data indicative of an angular velocity of the cutting disc (105), and to detect a kickback condition based on a decrease in angular velocity, and wherein the control unit (110) is arranged to electromagnetically brake the electric motor (130) in response to detecting a kickback condition.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 7, 2023
    Inventors: Magnus Rosén, Victor Johansson, David Dufke, Johan Berg
  • Patent number: 11759077
    Abstract: The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: September 19, 2023
    Assignee: HUSQVARNA AB
    Inventors: Johan Berg, Magnus Rosén, Lars Freidlitz, Pär Madbro, Joakim Leff-Hallstein
  • Patent number: 11185938
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive sensor data from a sensor associated with a construction device including a working element, determine a presence of a density gradient in a working material based on the sensor data, and cause an automatic response relative to operation of he working element based on the determination of the presence of the density gradient.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: November 30, 2021
    Assignee: Husqvarna AB
    Inventor: Johan Berg
  • Patent number: 10924881
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive construction device location data associated with a construction device, receive worker location data associated with a worker, and determine a safety condition based on the construction device location data and the worker location data.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: February 16, 2021
    Assignee: HUSQVARNA AB
    Inventors: Johan Berg, Anders Erestam
  • Patent number: 10842337
    Abstract: The present invention relates to a safety arrangement for a floor surfacing machine (1) comprising at least one drive wheel (3, 4), a motor arrangement (5, 6) for propelling said drive wheel (3, 4), a surfacing apparatus (13) and a control unit (10, 11a) for controlling the operation of said motor arrangement (5, 6) and said surfacing apparatus (13). The arrangement comprises at least one detecting unit (55; 56, 57) connected to said control unit (10,11a) and adapted for determining a torque required for operating each drive wheel (3, 4) wherein said control unit (10,11a) is configured for preventing operation of said surfacing apparatus (13) if said required torque is lower than a predetermined limit value. The invention also relates to a method for obtaining safety in a floor surfacing machine (1).
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 24, 2020
    Assignee: HUSQVARNA AB
    Inventors: Johan Persson, Johan Berg, Magnus Rosén
  • Patent number: 10818197
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive teaching data from a construction device in a teaching mode based on an operator performing an operation with the construction device and generate an operation profile based on the teaching data for execution by one or more construction devices. The operation profile defines parameters associated with the operation to enable one or more construction devices to repeat the operation in an operate mode.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: October 27, 2020
    Assignee: HUSQVARNA AB
    Inventors: Ulf Pettersson, Johan Berg, Anders Erestam
  • Publication number: 20200315420
    Abstract: The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Johan Berg, Magnus Rosen, Lars Freidlitz, Par Madbro, Joakim Leff-Hallstein
  • Patent number: 10729300
    Abstract: The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: August 4, 2020
    Assignee: HUSQVARNA AB
    Inventors: Johan Berg, Magnus Rosén, Lars Freidlitz, Pär Madbro, Joakim Leff-Hallstein
  • Patent number: 10666041
    Abstract: Disclosed herein is a liquid system tool having an integrated residual current device, RCD. The liquid system tool comprises a current circuit having a power input for receiving an alternating electrical current, AC, a rectifier for rectifying the AC into a direct current, DC, a voltage booster for increasing a DC voltage and a motor unit connected to an output of the voltage booster for driving the liquid system tool. The RCD comprises a sensor element connected to an output of the rectifier and an input of the voltage booster and being configured to collect an analog current signal and an analog to digital, A/D, converter configured to convert the analog current signal into a digital current signal.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: May 26, 2020
    Assignee: Husqvarna AB
    Inventors: Magnus Rosén, Johan Linnér, Johan Berg
  • Patent number: 10486250
    Abstract: An electric power saw/cutter includes a rotatable saw structure, a rear handle with a switch/speed control, a front handle, and a drive unit for rotating the saw structure. The drive unit includes a saw structure drive arrangement to which the saw structure is attachable, a transmission for driving the saw drive arrangement, an electric motor for driving an input shaft of the transmission, and a support structure for holding/carrying the saw structure drive arrangement. The transmission and the electric motor may be characterized in that the front handle and the rear handle are directly connected to each other to form a handle unit, which unit is resiliently connected to the drive unit, so that vibrations from the saw blade and drive unit will be reduced in the handle unit.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: November 26, 2019
    Assignee: HUSQVARNA AB
    Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
  • Publication number: 20190348831
    Abstract: Disclosed herein is a liquid system tool having an integrated residual current device, RCD. The liquid system tool comprises a current circuit having a power input for receiving an alternating electrical current, AC, a rectifier for rectifying the AC into a direct current, DC, a voltage booster for increasing a DC voltage and a motor unit connected to an output of the voltage booster for driving the liquid system tool. The RCD comprises a sensor element connected to an output of the rectifier and an input of the voltage booster and being configured to collect an analog current signal and an analog to digital, A/D, converter configured to convert the analog current signal into a digital current signal.
    Type: Application
    Filed: October 13, 2017
    Publication date: November 14, 2019
    Inventors: Magnus Rosén, Johan Linnér, Johan Berg
  • Publication number: 20190239712
    Abstract: The present invention relates to a safety arrangement for a floor surfacing machine (1) comprising at least one drive wheel (3, 4), a motor arrangement (5, 6) for propelling said drive wheel (3, 4), a surfacing apparatus (13) and a control unit (10, 11a) for controlling the operation of said motor arrangement (5, 6) and said surfacing apparatus (13). The arrangement comprises at least one detecting unit (55; 56, 57) connected to said control unit (10,11a) and adapted for determining a torque required for operating each drive wheel (3, 4) wherein said control unit (10,11a) is configured for preventing operation of said surfacing apparatus (13) if said required torque is lower than a predetermined limit value. The invention also relates to a method for obtaining safety in a floor surfacing machine (1).
    Type: Application
    Filed: October 12, 2017
    Publication date: August 8, 2019
    Inventors: Johan Persson, Johan Berg, Magnus Rosén
  • Publication number: 20190070681
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive sensor data from a sensor associated with a construction device including a working element, determine a presence of a density gradient in a working material based on the sensor data, and cause an automatic response relative to operation of he working element based on the determination of the presence of the density gradient.
    Type: Application
    Filed: March 6, 2017
    Publication date: March 7, 2019
    Applicant: HUSQVARNA AB
    Inventor: Johan Berg
  • Patent number: 10029341
    Abstract: The present invention relates to a floor surfacing machine comprising a frame that is carried by a first wheel and a second wheel. The floor surfacing machine further comprises a first motor, a handle arrangement, at least one planetary head that is rotatably mounted to the frame and at least one satellite surfacing head that is rotatably mounted to the planetary head, where the first motor is arranged to propel the planetary head. The floor surfacing machine comprises a first control unit, and a remote control panel which in turn comprises a second control unit) that is arranged to communicate with the first control unit. The floor surfacing machine also comprises a second motor that is arranged to propel the satellite surfacing heads such that the planetary head and the satellite surfacing heads are independently operable.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: July 24, 2018
    Assignee: HUSQVARNA AB
    Inventors: Johan Berg, Magnus Rosén, Lars Freidlitz, Pär Madbro, Joakim Leff-Hallstein
  • Publication number: 20170263151
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive teaching data from a construction device in a teaching mode based on an operator performing an operation with the construction device and generate an operation profile based on the teaching data for execution by one or more construction devices. The operation profile defines parameters associated with the operation to enable one or more construction devices to repeat the operation in an operate mode.
    Type: Application
    Filed: March 3, 2017
    Publication date: September 14, 2017
    Inventors: Ulf Pettersson, Johan Berg, Anders Erestam
  • Publication number: 20170255193
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive construction device location data associated with a construction device, receive worker location data associated with a worker, and determine a safety condition based on the construction device location data and the worker location data.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 7, 2017
    Inventors: Johan Berg, Anders Erestam
  • Publication number: 20170238779
    Abstract: The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.
    Type: Application
    Filed: June 1, 2015
    Publication date: August 24, 2017
    Applicant: HUSQVARNA AB
    Inventors: Johan Berg, Magnus Rosén, Lars Freidlitz, Pär Madbro, Joakim Leff-Hallstein