Patents by Inventor Marcus Alexander

Marcus Alexander 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: 12494684
    Abstract: A rotor includes a rotor body. A plurality of the rotor poles have a two-layer magnet assembly. Each magnet assembly includes an inner layer of at least three magnets and an outer layer of two magnets. The inner layer forms a radially outwardly open arc. The magnets of the inner and outer layers each have an angle of inclination with respect to a pole center axis. The angle of inclination is formed between the pole central axis and an inclination axis of the respective magnet. The magnets of the radially outer layer are arranged such that a point of intersection of the axis of inclination of the radially outer layer with the pole center axis lies radially inside the radially inner layer, and the angle of inclination of the magnets of the outer layer is smaller than the angle of inclination of the outer magnets of the inner layer.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: December 9, 2025
    Assignee: Robert Bosch GmbH
    Inventors: Peter Theisinger, Adrian Heinrich Sichau, Daniel Klis, Juergen Fridrich, Kurt Reutlinger, Marcus Alexander, Mohammad Nassar Albunni
  • Publication number: 20240162769
    Abstract: The invention relates to a rotor (1) of an electric machine (2), said rotor comprising a rotor body (4) which can be rotated about a rotor axis (3) and which, with respect to a cross-section, has a plurality of rotor poles (5) each having a pole center axis, (6) wherein; a plurality, in particular all, of the rotor poles (5) have a two-layer magnet assembly (7) comprising a plurality of magnets (8), in particular permanent magnets; each magnet assembly (7), as viewed in the radial direction with respect to the rotor axis (3), comprises an inner layer (10) of at least three magnets (8) and an outer layer (11) composed of two magnets (8); the inner layer (10) forms a radially outwardly open arc; the outer layer (11) is designed such that the distance between the magnets (8) of the outer layer (11) increases radially outwards; and the magnets (8.
    Type: Application
    Filed: February 25, 2022
    Publication date: May 16, 2024
    Inventors: Peter Theisinger, Adrian Heinrich Sichau, Daniel Klis, Juergen Fridrich, Kurt Reutlinger, Marcus Alexander, Mohammad Nassar Albunni
  • Patent number: 10770956
    Abstract: The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising: —a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5; —a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 8, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Marcus Alexander, Arndt Kelleter, Miguel Ruiz De Larramendi, Patrick Heuser, Mercedes Herranz Gracia
  • Publication number: 20170331353
    Abstract: The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising:—a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5;—a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.
    Type: Application
    Filed: September 11, 2015
    Publication date: November 16, 2017
    Inventors: Marcus Alexander, Arndt Kelleter, Miguel Ruiz De Larramendi, Patrick Heuser, Mercedes Herranz Gracia
  • Patent number: 9369016
    Abstract: A rotor (1) for an electric machine, in particular a permanently excited synchronous machine. At least one recess (20) is formed on the outer wall (12) of the receiving space (6) and forms a non-magnetizable space (29) adjacent to the lengthwise surface (10) of the permanent magnet (7). Due to this non-magnetizable space (29), iron losses in the stator teeth can be reduced in particular during operation of the electric machine in the field weakening range, which may result in a rise in efficacy of up to 3% for the electric machine.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: June 14, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Mercedes Herranz Gracia, Marcus Alexander, Arndt Kelleter, Nils Gebert, Miguel Ruiz De Larramendi, Patrick Heuser, Sebastian Tabarelli
  • Publication number: 20140167552
    Abstract: A rotor (1) for an electric machine, in particular a permanently excited synchronous machine. At least one recess (20) is formed on the outer wall (12) of the receiving space (6) and forms a non-magnetizable space (29) adjacent to the lengthwise surface (10) of the permanent magnet (7). Due to this non-magnetizable space (29), iron losses in the stator teeth can be reduced in particular during operation of the electric machine in the field weakening range, which may result in a rise in efficacy of up to 3% for the electric machine.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 19, 2014
    Inventors: Mercedes Herranz Gracia, Marcus Alexander, Arndt Kelleter, Nils Gebert, Miguel Ruiz De Larramendi, Patrick Heuser, Sebastian Tabarelli
  • Patent number: 6068204
    Abstract: A hose end dispenser for selectively spraying water with and without an additive such as liquid fertilizers and insecticides. The hose end dispenser includes a main conduit having opposite proximal and distal ends and a bypass conduit with a pair of opposite ends fluidly connected to the main conduit. A first of the ends of the bypass conduit is positioned adjacent the proximal end of the main conduit. A second of the ends of the bypass conduit is positioned adjacent the distal end of the main conduit. A container is fluidly connected to main conduit between the first and second ends of the bypass conduit. A rotatable dispensing ball is interposed between the container and the main conduit. A bypass valve is positioned adjacent the proximal end of the main conduit and the first end of the bypass conduit for selectively opening and closing passage of fluid through the main conduit and the bypass conduit, the bypass valve.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 30, 2000
    Inventor: Marcus Alexander