Patents by Inventor Michael Düncher

Michael Düncher 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: 12587061
    Abstract: An electric motor contains a motor shaft which is arranged in a motor housing. The motor shaft is rotatably mounted about a rotational axis in at least one rolling or ball bearing, which sits in a bearing receiving area and contains an outer ring and an inner ring fixed to the motor shaft. The outer ring of the rolling bearing is pretensioned by a spring disc which sits in the bearing receiving area and has a number of wave trains with alternatingly axially projecting half wave trains, and the spring disc has a number of centering elements on the inner circumference. The centering elements rest against the motor shaft when the spring disc is untensioned and is arranged at a distance to the motor shaft when the spring disc is tensioned.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: March 24, 2026
    Assignee: Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
    Inventors: Kevin Koch, Michael Düncher, Daniel Hirsch
  • Patent number: 12500459
    Abstract: A stator for an electric motor has a stator main body with stator teeth arranged in the form of a star and a stator yoke. The stator main body is formed with a number of axial grooves on an outer circumference. Spring elements are inserted into the axial grooves and the spring elements circumferentially protrude in the radial direction from the stator main body. The spring elements are introduced with a radial form-fit.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: December 16, 2025
    Assignee: Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Wuerzburg
    Inventors: Kevin Koch, Michael Düncher, Daniel Hirsch
  • Publication number: 20250274003
    Abstract: An electric motor has a stator with a cylindrical stator main body with radially inwardly directed stator teeth and with a number of first axial slots formed on the circumferential side in the stator main body, and a motor housing for accommodating the stator. A number of second axial slots are provided on a housing inner wall and are arranged in alignment with the first axial slots. A spring element is provided, which has a spring main body which is inserted in a radially form-fitting manner into one of the first axial slots. A spring arm protrudes out of the spring main body and projects radially on the circumference of the stator main body. The spring arm has a stiffening contour along an arm longitudinal direction, which increases a tangential stiffness of the spring arm.
    Type: Application
    Filed: February 27, 2025
    Publication date: August 28, 2025
    Inventors: Michael DÜNCHER, Daniel HIRSCH
  • Patent number: 12348107
    Abstract: An electric motor has a stator and a rotor which is arranged on a motor shaft in a rotationally fixed manner. The motor shaft is rotatably mounted about a rotational axis in at least one rolling bearing within a motor housing. The rolling bearing is arranged in a bearing shield in a bearing receiving area, the outer ring of the rolling bearing is pretensioned by a spring disc which sits in the bearing receiving area in a fixed manner to the housing, and the spring disc has an opening and a number of spring elements raised axially towards the outer ring in a disc body surrounding the opening.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: July 1, 2025
    Assignee: Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
    Inventors: Kevin Koch, Michael Düncher
  • Publication number: 20250158482
    Abstract: A stator for an electric motor has a cylindrical stator main body with radially inwardly directed stator teeth and with a number of axial slots over the circumference. Each of a number of spring elements has a spring main body that is or can be radially interlockingly inserted into a corresponding axial slot and also spring arms extending or bent out of the spring body and projecting circumferentially radially beyond the stator main body. The number of spring arms increases as an axial length of the stator main body increases, and/or a ratio between a spring width of the respective spring arm and a material thickness of the spring element or the spring main body lies between 10 and 15, preferably between 11 and 14, or further preferably at 13±0.5.
    Type: Application
    Filed: February 13, 2023
    Publication date: May 15, 2025
    Inventors: Daniel HIRSCH, Michael DÜNCHER
  • Publication number: 20230291283
    Abstract: An electric motor of a motor vehicle, in particular a steering motor, includes a housing having a motor compartment and an electronics compartment. The motor compartment and the electronics compartment are separated by a housing wall that has a plurality of openings. A stator is situated in the motor compartment and an electronics system is situated in the electronics compartment. The stator and the electronics system electrically contact one another through phase connections which project through the openings. A separating element is situated between the stator and the electronics system. The separating element at least partially covers the openings and the housing wall.
    Type: Application
    Filed: May 19, 2023
    Publication date: September 14, 2023
    Inventors: Kevin Koch, Michael Düncher
  • Publication number: 20230238853
    Abstract: An electric motor has a stator and a rotor which is arranged on a motor shaft in a rotationally fixed manner. The motor shaft is rotatably mounted about a rotational axis in at least one rolling bearing within a motor housing. The rolling bearing is arranged in a bearing shield in a bearing receiving area, the outer ring of the rolling bearing is pretensioned by a spring disc which sits in the bearing receiving area in a fixed manner to the housing, and the spring disc has an opening and a number of spring elements raised axially towards the outer ring in a disc body surrounding the opening.
    Type: Application
    Filed: January 30, 2023
    Publication date: July 27, 2023
    Inventors: Kevin Koch, Michael Düncher
  • Publication number: 20230208251
    Abstract: An electric motor contains a motor shaft which is arranged in a motor housing. The motor shaft is rotatably mounted about a rotational axis in at least one rolling or ball bearing, which sits in a bearing receiving area and contains an outer ring and an inner ring fixed to the motor shaft. The outer ring of the rolling bearing is pretensioned by a spring disc which sits in the bearing receiving area and has a number of wave trains with alternatingly axially projecting half wave trains, and the spring disc has a number of centering elements on the inner circumference. The centering elements rest against the motor shaft when the spring disc is untensioned and is arranged at a distance to the motor shaft when the spring disc is tensioned.
    Type: Application
    Filed: February 28, 2023
    Publication date: June 29, 2023
    Inventors: Kevin Koch, Michael Düncher, Daniel Hirsch
  • Publication number: 20230042306
    Abstract: A stator for an electric motor has a stator main body with stator teeth arranged in the form of a star and a stator yoke. The stator main body is formed with a number of axial grooves on an outer circumference. Spring elements are inserted into the axial grooves and the spring elements circumferentially protrude in the radial direction from the stator main body. The spring elements are introduced with a radial form-fit.
    Type: Application
    Filed: October 14, 2022
    Publication date: February 9, 2023
    Inventors: Kevin Koch, Michael Düncher, Daniel Hirsch