Patents by Inventor Jan Christian Langsdorf

Jan Christian Langsdorf 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: 20230420954
    Abstract: A switched mode power supply charging device for an appliance comprises a circuit comprising a wireless interface circuit and operative to obtain appliance-related data for at least one personal care appliance and transmit the appliance-related data over the wireless interface circuit.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Inventors: Jan Christian Langsdorf, Jannik Loeper, Martin Dietrich, Simon Contreras
  • Publication number: 20230421065
    Abstract: A switched mode power supply charger device for a personal care appliance comprises a power supply cable and a power plug. The power plug comprises a housing comprising a first compartment and a second compartment adjacent the first compartment. A converter is disposed in the first compartment. A communication circuit is disposed in the second compartment.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Inventors: Jan Christian Langsdorf, Jannik LOEPER, Martin DIETRICH
  • Publication number: 20220324127
    Abstract: A personal care appliance with a flexible circuit board having a first end portion, a second end portion and a flexible bridge between the first end portion and the second end portion. A first rigid circuit board is mounted to the first end portion of the flexible circuit board. A second rigid circuit board is mounted to the second end portion of the flexible circuit board and folded over the first rigid circuit board. At least one electronic component that emits electromagnetic waves is mounted to the first rigid circuit board. A flexible shield is folded over the at least one electronic component.
    Type: Application
    Filed: April 7, 2021
    Publication date: October 13, 2022
    Inventors: Jannik Loeper, Jan Christian Langsdorf, Martin Stratmann
  • Publication number: 20220324126
    Abstract: A personal care appliance with a flexible circuit board having a first end portion, a second end portion and a flexible bridge between the first end portion and the second end portion. A first rigid circuit board is mounted to the first end portion of the flexible circuit board. A second rigid circuit board is mounted to the second end portion of the flexible circuit board and folded over the first rigid circuit board. At least one electronic component that emits electromagnetic waves is mounted to the first rigid circuit board. A flexible antenna is in electrical communication with first rigid circuit board. The flexible antenna has a top surface with a copper track facing away from the first rigid circuit board in a folded position.
    Type: Application
    Filed: April 7, 2021
    Publication date: October 13, 2022
    Inventors: Jannik Loeper, Jan Christian Langsdorf, Martin Stratmann
  • Publication number: 20220001559
    Abstract: A grooming device. The grooming device includes a handle having a neck portion, a displacement sensor positioned within the neck portion, a housing portion, a coupling mechanism securing the neck portion and the housing portion to one another, and a power source positioned within the handle. The neck portion includes a proximal end and a distal end. The proximal end of the neck portion having an implement connecting structure. The housing portion includes a proximal end, a distal end, and a location element. The proximal end of the housing portion is pivotably connected to the distal end of the neck portion about a handle pivot axis. As the neck portion pivots about the handle pivot axis relative to the housing portion, the displacement sensor detects displacement of the location element. A grooming implement is connected to the implement connecting structure.
    Type: Application
    Filed: July 2, 2020
    Publication date: January 6, 2022
    Inventors: Alexander Hiller, Judith Von Dahlen, Dominik Jueling, Aliaksandr Andrasiuk, Jan Christian Langsdorf, Ian Anthony Good
  • Patent number: 10424857
    Abstract: A connector is disclosed comprising at least one contact clip. The contact clip comprises an electrically conductive substrate having a longitudinal axis, a first terminal located at a first end of the substrate, wherein the first terminal comprises at least two contact tongues between which a longitudinal slot is formed, which contact tongues are elastically deformable with respect to each other in a first direction which is perpendicular to the longitudinal axis, and a second terminal located at a second end of the substrate. The connector may further comprise a chassis and a PCB. In addition, a device comprising an energy consumer, an electrical energy source, a PCB and at least one connector is disclosed.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: September 24, 2019
    Assignee: Braun GMBH
    Inventors: Andreas Erndt, Michael Steghaus, Jan Christian Langsdorf, Torsten Klemm
  • Publication number: 20180309218
    Abstract: A connector is disclosed comprising at least one contact clip. The contact clip comprises an electrically conductive substrate having a longitudinal axis, a first terminal located at a first end of the substrate, wherein the first terminal comprises at least two contact tongues between which a longitudinal slot is formed, which contact tongues are elastically deformable with respect to each other in a first direction which is perpendicular to the longitudinal axis, and a second terminal located at a second end of the substrate. The connector may further comprise a chassis and a PCB. In addition, a device comprising an energy consumer, an electrical energy source, a PCB and at least one connector is disclosed.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 25, 2018
    Inventors: Andreas Erndt, Michael Steghaus, Jan Christian Langsdorf, Torsten Klemm
  • Patent number: 10038330
    Abstract: Method for controlling the battery capacity of a secondary battery in a battery-driven household electrical appliance and a respective household electrical appliance are described, wherein the battery-driven household electrical appliance has an electrical load and a control means adapted to control the operation of the household electrical appliance and to monitor the capacity of the secondary battery, said method comprising the following steps: recognizing a situation of storage of the household electrical appliance in which the household electrical appliance is not in use; determining the current capacity of the secondary battery; comparing the current capacity of the secondary battery with a desired storage capacity for the electrical household appliance; activating an energy-consuming load in the electrical household appliance if the current capacity of the secondary battery is higher than the desired storage capacity until the current capacity is equal to the desired storage capacity; activating an e
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: July 31, 2018
    Assignee: Braun GMBH
    Inventors: Torsten Klemm, Jan Christian Langsdorf, Gerd Laschinski, Hartmut Loth-Krausser, Christof Ungemach
  • Patent number: 9833915
    Abstract: An electrically driven shaver comprises a housing and at least one hair cutting element that is driven by an electromotor. A thermoelectric skin cooling element and the electromotor are electrically operable by a microcontroller and an on/off switch which is electrically connected with the microcontroller. The microcontroller is adapted to activate and deactivate operation of both the electromotor and the skin cooling element. The skin cooling element is located adjacent to the hair cutting element. The microcontroller is adapted to immediately deactivate operation of the electromotor and relative to that to deactivate operation of the skin cooling element at later point of time, both in response to the “off” actuation of the same on/off switch.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: December 5, 2017
    Assignee: Braun GmbH
    Inventors: Renata Burghardt, Gerd Laschinski, Jan Christian Langsdorf, Diana Kappes, Sonja Georgescu
  • Publication number: 20160365741
    Abstract: Method for controlling the battery capacity of a secondary battery in a battery-driven household electrical appliance and a respective household electrical appliance are described, wherein the battery-driven household electrical appliance has an electrical load and a control means adapted to control the operation of the household electrical appliance and to monitor the capacity of the secondary battery, said method comprising the following steps: recognizing a situation of storage of the household electrical appliance in which the household electrical appliance is not in use; determining the current capacity of the secondary battery; comparing the current capacity of the secondary battery with a desired storage capacity for the electrical household appliance; activating an energy-consuming load in the electrical household appliance if the current capacity of the secondary battery is higher than the desired storage capacity until the current capacity is equal to the desired storage capacity; activating an e
    Type: Application
    Filed: June 6, 2016
    Publication date: December 15, 2016
    Inventors: Torsten Klemm, Jan Christian Langsdorf, Gerd Laschinski, Hartmut Loth-Krausser, Christof Ungemach
  • Publication number: 20160327314
    Abstract: A method and a user electrical appliance for switching on a function of a user electrical appliance having a cooling element are described, wherein the cooling element is coming into contact with the users skin during regular use of the electrical appliance and wherein the cooling element is connected to a thermo element having a cold side and a warm side, the cold side of the thermo element being in thermoconducting contact with the cooling element and the warm side of the thermo element being in thermoconducting contact with a heat reservoir element of the user electrical appliance. The method comprises the following steps: (a) measuring a voltage induced by the thermo element; (b) determining whether the measured voltage is above a determined threshold; (c) activating the function if the measured voltage is above the determined threshold.
    Type: Application
    Filed: May 4, 2016
    Publication date: November 10, 2016
    Inventor: Jan Christian Langsdorf
  • Publication number: 20160325444
    Abstract: A method and a user electrical appliance for adjusting the maximum cooling temperature of a cooling element of the user electrical appliance are described, wherein the cooling element is coming in contact with the users skin during regular use of the electrical appliance and wherein the cooling element is connected to a thermo element having a cold side and a warm side, the cold side of the thermo element being in thermoconducting contact with the cooling element and the warm side of the thermo element being in thermoconducting contact with a heat reservoir element of the user electrical appliance. The method comprising the following steps: (a) measuring the temperature (?) of the heat reservoir element; (b) determining whether the measured temperature (?) is below a lower threshold (?low); (c) cooling the cooling element thereby heating the heat reservoir element if the measured temperature (?) is below the lower threshold (?low).
    Type: Application
    Filed: May 4, 2016
    Publication date: November 10, 2016
    Inventors: Jan Christian Langsdorf, Gerd Laschinski, Christian Wachter
  • Patent number: 8991195
    Abstract: A method with the following steps is described for testing a Peltier element: applying a voltage to the Peltier element; switching off the voltage at the end of a defined period of time; measuring the voltage at the Peltier element; and comparing the measured voltage with a reference value. Furthermore, a small electrical appliance, such as an electric shaver, with a Peltier element is described, which small electrical appliance has a safety device which ensures that a malfunction of the Peltier element cannot result in danger to the user.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: March 31, 2015
    Assignee: Braun GmbH
    Inventor: Jan Christian Langsdorf
  • Publication number: 20140290452
    Abstract: An electrically driven shaver comprises a housing and at least one hair cutting element that is driven by an electromotor. A thermoelectric skin cooling element and the electromotor are electrically operable by a microcontroller and an on/off switch which is electrically connected with the microcontroller. The microcontroller is adapted to activate and deactivate operation of both the electromotor and the skin cooling element. The skin cooling element is located adjacent to the hair cutting element. The microcontroller is adapted to immediately deactivate operation of the electromotor and relative to that to deactivate operation of the skin cooling element at later point of time, both in response to the “off” actuation of the same on/off switch.
    Type: Application
    Filed: March 20, 2014
    Publication date: October 2, 2014
    Applicant: Braun GmbH (a German Corporation)
    Inventors: Renata Burghardt, Gerd Laschinski, Jan Christian Langsdorf, Diana Kappes, Sonja Georgescu
  • Patent number: 8810328
    Abstract: A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; and a device for detecting the load of the oscillator and for setting the circuit arrangement into one of multiple operating states depending on the detected load. The device determines the load of the oscillator using an electrical variable occurring in the oscillator.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: August 19, 2014
    Assignee: Braun GmbH
    Inventors: Philipp Jung, Joachim Lepper, Jan Christian Langsdorf, Thomas Hohmann
  • Patent number: 8581443
    Abstract: A method and a circuit arrangement for the inductive transfer of energy with an oscillator and a device to detect the inductive load of the oscillator, and to modify a damping element in the oscillator depending on the load of said oscillator.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: November 12, 2013
    Assignee: Braun GmbH
    Inventors: Philipp Jung, Joachim Lepper, Jan Christian Langsdorf, Lutz Ronald Herzberg, Thomas Hohmann
  • Patent number: 8471547
    Abstract: A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; a power supply for supplying the oscillator with energy and having a complex input resistance; and a device for detecting the inductive load of the oscillator and for modifying the complex input resistance of the power supply depending on the load of the oscillator.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: June 25, 2013
    Assignee: Braun GmbH
    Inventors: Philipp Jung, Joachim Lepper, Jan Christian Langsdorf, Lutz Ronald Herzberg, Thomas Hohmann, Herbert Petzold
  • Publication number: 20130069606
    Abstract: The present invention relates to a dc converter whose output voltage is adjustable. The dc converter has an output at which an output voltage (VOUT) may be tapped, and which has an output terminal and a reference potential terminal, a control circuit which has a control input, a voltage divider (R1, R2), which is connected in parallel to the output, and which has a center tap connected to the control input, and a voltage source (DC) which is connected in series to the voltage divider (R1, R2), and whose voltage (VSET) is adjustable.
    Type: Application
    Filed: August 17, 2012
    Publication date: March 21, 2013
    Inventors: Christian Wachter, Jan Christian Langsdorf, Gerd Laschinski
  • Publication number: 20120234022
    Abstract: A method with the following steps is described for testing a Peltier element: applying a voltage to the Peltier element; switching off the voltage at the end of a defined period of time; measuring the voltage at the Peltier element; and comparing the measured voltage with a reference value. Furthermore, a small electrical appliance, such as an electric shaver, with a Peltier element is described, which small electrical appliance has a safety device which ensures that a malfunction of the Peltier element cannot result in danger to the user.
    Type: Application
    Filed: January 17, 2012
    Publication date: September 20, 2012
    Inventor: Jan Christian Langsdorf
  • Publication number: 20120112845
    Abstract: A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; and a device for detecting the load of the oscillator and for setting the circuit arrangement into one of multiple operating states depending on the detected load. The device determines the load of the oscillator using an electrical variable occurring in the oscillator.
    Type: Application
    Filed: December 8, 2011
    Publication date: May 10, 2012
    Applicant: Braun GmbH
    Inventors: Philipp Jung, Joachim Lepper, Jan Christian Langsdorf, Thomas Hohmann