Patents by Inventor Denis EHRLER

Denis EHRLER 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: 20250379492
    Abstract: A cut-off machine includes an electrical drive motor for driving a cutting tool. Provided in the cut-off machine is a control unit which supplies the drive motor with electrical power via a switching element. The control unit is connected to an actuator and changes the speed of the drive motor with the size and/or shape of the control signal. The control unit has a first and a second operating mode. In the first operating mode, depending on the control signal, the speed of the drive motor is supplied according to a first operating curve with a first maximum power and a first end speed. In a second operating mode, depending on the size of the control signal, the speed of the drive motor is supplied according to a second operating curve with a second maximum power and a second end speed.
    Type: Application
    Filed: June 3, 2025
    Publication date: December 11, 2025
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Alexander Haas, Sebastian Renz, Denis Ehrler, Tobias Wagner, Patrick Schindler, Horst Otterbach
  • Publication number: 20250326079
    Abstract: A handheld work apparatus includes: a housing (2); a motor support unit (10) which is separate from the housing (2) and is connected to the housing (2); a drive motor (3) arranged in the housing (2) for driving a tool (5) that rotates about an axis of rotation (8), wherein the drive motor (3) is attached to the motor support unit (10); a protective hood (51), the protective hood (51) at least partially covering the tool (5) and a stop (110) being provided on the protective hood (51). A mating stop (120) is formed on the motor support unit (10), in particular directly, which is provided for operative connection with the stop (110) of the protective hood (51) in order to restrict the pivoting movement of the protective hood (51) to an end position (131).
    Type: Application
    Filed: April 21, 2025
    Publication date: October 23, 2025
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Denis Ehrler, Johannes Gültlinger, Patrick Schindler, Johann-Sebastian Renz
  • Publication number: 20250326042
    Abstract: A handheld work apparatus includes a housing (2). A drive motor (3) is arranged in the housing (2) for driving a tool (2) that rotates about an axis of rotation (8). A protective hood (51) at least partially covers the tool (5). An operating stop (120) is fixed relative to the housing (2) and a counter-body (110) is arranged on the protective hood (51) and corresponds to the operating stop (120). The operating stop (120) is designed as an energy absorption element which, in the event of an excess load acting on the operating stop (120) due to the counter-body (110), moves away from the counter-body (110) in order to absorb kinetic energy of the protective hood (51) and to protect components of the counter-body (110). The work apparatus (1) includes an end stop (101) for restricting the rotational movement of the protective hood (51) to an end position (25).
    Type: Application
    Filed: April 21, 2025
    Publication date: October 23, 2025
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Patrick Schindler, Denis Ehrler, Jürgen Hohl, Fabian Willems, Tobias Wagner
  • Publication number: 20250326103
    Abstract: A work apparatus includes: a housing; a motor support unit designed separately from the housing, the housing being fixed to the motor support unit. A drive motor is designed as an electric motor for driving a tool and is attached to the motor support unit. A receptacle housing designed separately from the motor support unit for receiving at least one battery pack for supplying the drive motor with electrical power is fixed to the housing. The receptacle housing and the motor support unit are designed and arranged relative to each other in such a way that the receptacle housing is able to move relative to the motor support unit in order to reduce, in particular to prevent, direct transmission of inertial forces emanating from the receptacle housing to the motor support unit in the event of an impact load on the work apparatus.
    Type: Application
    Filed: April 21, 2025
    Publication date: October 23, 2025
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Patrick Schindler, Denis Ehrler, Alexander Härtel
  • Patent number: 12284937
    Abstract: A work apparatus includes a housing, an electric motor arranged in the housing, the electric motor including a rotor shaft driven rotationally about a rotor axis, an output shaft for driving a tool, the output shaft being connected with a form fit to the rotor shaft on a receptacle of the rotor shaft, and a flange supported on the housing. The rotor shaft is mounted rotatably via a rotor shaft bearing arranged in the flange, the rotor shaft bearing extending along a bearing section in the direction of the rotor axis, and wherein the output shaft extends at least as far as the bearing section of the rotor shaft bearing.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: April 29, 2025
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Denis Ehrler, Matthias Maier, Anton Angelusch
  • Patent number: 12233524
    Abstract: A handheld work apparatus includes a motor, a transmission shaft, a tool, a guide tube, a housing, and a first anti-vibration element. The motor via the transmission shaft drives the tool. The transmission shaft is received in the guide tube. The motor is disposed in the housing. The tool is disposed on a front longitudinal end of the guide tube. The housing is disposed on the rear longitudinal end of the guide tube. The housing at least partially encompasses the guide tube, wherein the guide tube projects from the housing. The first anti-vibration element is disposed such that it acts in a vibration-decoupling manner between the housing and the guide tube. The first anti-vibration element is disposed on that side of the motor facing the tool. The handheld work apparatus includes a second anti-vibration element connecting the motor to the housing in an at least indirectly vibration-decoupled manner.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: February 25, 2025
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Johannes Menzel, Lars Robert Kraft, Matthias Maier, Denis Ehrler, Felix Moessinger, Marc Schmid
  • Patent number: 12206136
    Abstract: A cell connector structure is provided for a rechargeable battery pack that supplies electrical drive power to an electrically driven gardening and/or forestry work appliance. The cell connector structure has: a plurality of cell connectors, wherein the cell connectors are designed for electrically connecting rechargeable battery cells, at least one cell connector element, wherein the cell connectors and the at least one cell connector element are designed for being arranged on one another and for being secured against becoming detached from one another, a plurality of voltage tap elements, wherein the voltage tap elements have voltage tap cables, wherein the voltage tap cables are designed for being electrically connected to the cell connectors, and at least one tap element body, wherein the voltage tap elements and the at least one tap element body are designed for being arranged on another and for being secured against becoming detached from one another.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 21, 2025
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Gerhard Stuebs, Sebastian Schenk, Denis Ehrler, Alexander Nordmann, Joachim Kolb
  • Patent number: 12176129
    Abstract: A power tool has a drive unit and an operating handle. At least one electrical line connects the operating handle and the drive unit to each other. The at least one electrical line is fastened at a first electrical connection location to the operating handle and at a second electrical connection location to the drive unit. A safety cable extends along the at least one electrical line between operating handle and drive unit. The safety cable has a first end section and a second end section. The first end section is connected mechanically fixed at a first fixation location to the operating handle. The second end section is connected mechanically fixed at a second fixation location to the drive unit. The at least one electrical line and the safety cable are guided together such that the safety cable forms a tear-off protection for the at least one electrical line.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: December 24, 2024
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Andreas Dettling, Dennis Karl, Denis Ehrler, Markus König, Manuel Waiblinger, Jan Lukas Braun, Alexander Härtel
  • Patent number: 12164281
    Abstract: A hand-guided garden, forestry and/or construction working apparatus has an inactive state, an active state and a variable setting, as well as an apparatus operator control element which can be activated by a user. In the inactive state, the garden, forestry and/or construction working apparatus is designed to be transferred into the active state triggered by activation of the apparatus operator control element, and in the active state the garden, forestry and/or construction working apparatus is designed to change the setting and not to be transferred into the inactive state triggered by activation of the apparatus operator control element.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: December 10, 2024
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Dirk Foerstner, Denis Ehrler, Michael Varga
  • Patent number: 12010943
    Abstract: A construction for a battery pack has: a temperature sensor with a sensor head, wherein the sensor head measures a temperature of at least one battery cell via a sensor element and a number of sensor cables contiguous to the sensor head; an assembly body, defining a head disposal region for disposing the sensor head and a cable disposal region contiguous to the head disposal region for disposing a cable portion of the number of sensor cables. The assembly body has a head securing element with a cable conduit. A conduit width of the cable conduit is larger than or equal to a cable width of the disposed cable portion and smaller than a head width of the disposed sensor head such that the head securing element is configured for securing in a form-fitting manner the sensor head disposed in the head disposal region in relation to a movement in the direction of the cable disposal region. The assembly body has a cable securing element.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 18, 2024
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Denis Ehrler, Malte Von Hofen, Alexander Nordmann, Joachim Kolb
  • Publication number: 20240075607
    Abstract: A handheld work apparatus includes a motor, a transmission shaft, a tool, a guide tube, a housing, and a first anti-vibration element. The motor via the transmission shaft drives the tool. The transmission shaft is received in the guide tube. The motor is disposed in the housing. The tool is disposed on a front longitudinal end of the guide tube. The housing is disposed on the rear longitudinal end of the guide tube. The housing at least partially encompasses the guide tube, wherein the guide tube projects from the housing. The first anti-vibration element is disposed such that it acts in a vibration-decoupling manner between the housing and the guide tube. The first anti-vibration element is disposed on that side of the motor facing the tool. The handheld work apparatus includes a second anti-vibration element connecting the motor to the housing in an at least indirectly vibration-decoupled manner.
    Type: Application
    Filed: April 26, 2023
    Publication date: March 7, 2024
    Inventors: Johannes Menzel, Lars Robert Kraft, Matthias Maier, Denis Ehrler, Felix Moessinger, Marc Schmid
  • Patent number: 11877542
    Abstract: A backpack blower has a backpack with a load-bearing frame, a blower tube with a backpack-side tube section which is held on a rear side of the load-bearing frame, and a hand-side tube section which extends past a first side region of the load-bearing frame, a drive motor, an energy source for the drive motor, and an axial fan which is driven by the drive motor, has an axial fan axis, and is arranged in the backpack-side tube section of the blower tube. The backpack-side tube section of the blower tube runs with a main direction component in a backpack transverse direction of the load-bearing frame and has an axial blower tube end termination which projects laterally beyond a second side region of the load-bearing frame, which second side region faces away from the first side region, and/or is surrounded at least on a part of its circumference by a protective ring element which is connected to the load-bearing frame. The blower may be an electric leaf blower.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: January 23, 2024
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Andreas Dettling, Dennis Karl, Denis Ehrler, Sebastian Friedrich, Simon Klingler
  • Publication number: 20230354740
    Abstract: A work apparatus includes a housing, an electric motor arranged in the housing, the electric motor including a rotor shaft driven rotationally about a rotor axis, an output shaft for driving a tool, the output shaft being connected with a form fit to the rotor shaft on a receptacle of the rotor shaft, and a flange supported on the housing. The rotor shaft is mounted rotatably via a rotor shaft bearing arranged in the flange, the rotor shaft bearing extending along a bearing section in the direction of the rotor axis, and wherein the output shaft extends at least as far as the bearing section of the rotor shaft bearing.
    Type: Application
    Filed: April 26, 2023
    Publication date: November 9, 2023
    Inventors: Denis Ehrler, Matthias Maier, Anton Angelusch
  • Patent number: 11642771
    Abstract: A hand-guided motorized working apparatus and an operating device for the apparatus are provided. The operating device has a handle shank configured to be hand-gripped, an operating element receiving region adjoining the handle shank, and an operating unit which acts on the apparatus operation and includes an operating element which is held movably on the operating element receiving region for actuation by a finger of a hand gripping the handle shank, and has a finger rest region extending along an outer side of the operating element receiving region.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: May 9, 2023
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Johannes Luecke, Dirk Foerstner, Denis Ehrler, Michael Varga
  • Publication number: 20220189657
    Abstract: A power tool has a drive unit and an operating handle. At least one electrical line connects the operating handle and the drive unit to each other. The at least one electrical line is fastened at a first electrical connection location to the operating handle and at a second electrical connection location to the drive unit. A safety cable extends along the at least one electrical line between operating handle and drive unit. The safety cable has a first end section and a second end section. The first end section is connected mechanically fixed at a first fixation location to the operating handle. The second end section is connected mechanically fixed at a second fixation location to the drive unit. The at least one electrical line and the safety cable are guided together such that the safety cable forms a tear-off protection for the at least one electrical line.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 16, 2022
    Inventors: Andreas Dettling, Dennis Karl, Denis Ehrler, Markus König, Manuel Waiblinger, Jan Lukas Braun, Alexander Härtel
  • Publication number: 20220061235
    Abstract: A backpack blower has a backpack with a load-bearing frame, a blower tube with a backpack-side tube section which is held on a rear side of the load-bearing frame, and a hand-side tube section which extends past a first side region of the load-bearing frame, a drive motor, an energy source for the drive motor, and an axial fan which is driven by the drive motor, has an axial fan axis, and is arranged in the backpack-side tube section of the blower tube. The backpack-side tube section of the blower tube runs with a main direction component in a backpack transverse direction of the load-bearing frame and has an axial blower tube end termination which projects laterally beyond a second side region of the load-bearing frame, which second side region faces away from the first side region, and/or is surrounded at least on a part of its circumference by a protective ring element which is connected to the load-bearing frame. The blower may be an electric leaf blower.
    Type: Application
    Filed: September 1, 2021
    Publication date: March 3, 2022
    Inventors: Andreas DETTLING, Dennis KARL, Denis EHRLER, Sebastian FRIEDRICH, Simon KLINGLER
  • Publication number: 20210124335
    Abstract: A hand-guided garden, forestry and/or construction working apparatus has an inactive state, an active state and a variable setting, as well as an apparatus operator control element which can be activated by a user. In the inactive state, the garden, forestry and/or construction working apparatus is designed to be transferred into the active state triggered by activation of the apparatus operator control element, and in the active state the garden, forestry and/or construction working apparatus is designed to change the setting and not to be transferred into the inactive state triggered by activation of the apparatus operator control element.
    Type: Application
    Filed: October 28, 2020
    Publication date: April 29, 2021
    Inventors: Dirk FOERSTNER, Denis EHRLER, Michael VARGA
  • Publication number: 20210001467
    Abstract: A hand-guided motorized working apparatus and an operating device for the apparatus are provided. The operating device has a handle shank configured to be hand-gripped, an operating element receiving region adjoining the handle shank, and an operating unit which acts on the apparatus operation and includes an operating element which is held movably on the operating element receiving region for actuation by a finger of a hand gripping the handle shank, and has a finger rest region extending along an outer side of the operating element receiving region.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Johannes LUECKE, Dirk FOERSTNER, Denis EHRLER, Michael VARGA
  • Publication number: 20200220123
    Abstract: A construction for a battery pack has: a temperature sensor with a sensor head, wherein the sensor head measures a temperature of at least one battery cell via a sensor element and a number of sensor cables contiguous to the sensor head; an assembly body, defining a head disposal region for disposing the sensor head and a cable disposal region contiguous to the head disposal region for disposing a cable portion of the number of sensor cables. The assembly body has a head securing element with a cable conduit. A conduit width of the cable conduit is larger than or equal to a cable width of the disposed cable portion and smaller than a head width of the disposed sensor head such that the head securing element is configured for securing in a form-fitting manner the sensor head disposed in the head disposal region in relation to a movement in the direction of the cable disposal region. The assembly body has a cable securing element.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 9, 2020
    Inventors: Denis EHRLER, Malte VON HOFEN, Alexander NORDMANN, Joachim KOLB
  • Publication number: 20200220144
    Abstract: A cell connector structure is provided for a rechargeable battery pack that supplies electrical drive power to an electrically driven gardening and/or forestry work appliance. The cell connector structure has: a plurality of cell connectors, wherein the cell connectors are designed for electrically connecting rechargeable battery cells, at least one cell connector element, wherein the cell connectors and the at least one cell connector element are designed for being arranged on one another and for being secured against becoming detached from one another, a plurality of voltage tap elements, wherein the voltage tap elements have voltage tap cables, wherein the voltage tap cables are designed for being electrically connected to the cell connectors, and at least one tap element body, wherein the voltage tap elements and the at least one tap element body are designed for being arranged on another and for being secured against becoming detached from one another.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 9, 2020
    Inventors: Gerhard STUEBS, Sebastian SCHENK, Denis EHRLER, Alexander NORDMANN, Joachim KOLB