Patents by Inventor Christoph Margraf

Christoph Margraf 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: 11962226
    Abstract: A rotor carrier for a rotor of an electric machine and to a hybrid module with such a rotor carrier. The rotor carrier includes a tubular base body having elements on an outer circumferential surface facing the rotor for connection between base body and rotor, the base body is connected to a hub by a connection element. The connection element has an axial portion which extends along a part of the axial length of the base body and runs coaxial to the latter, in that receptacles for parts of a clutch are provided on an inner circumferential surface of the axial portion remote of the base body, and in that the connection element has a flange area adjoining the axial portion.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 16, 2024
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Wolfgang Großpietsch, Angelika Ebert, Monika Rößner, Christoph Margraf, Thomas Bauer
  • Patent number: 11807099
    Abstract: A rotor carrier for a rotor of an electric machine and to a hybrid module with such a rotor carrier. The rotor carrier includes a pot-shaped base body. The base body overlaps only a portion of the axial extension of the rotor, in that the rotor carrier comprises a second supporting body that has elements on an outer circumferential surface for a positive engagement connection and/or frictional engagement connection between supporting body and rotor, in that the supporting body has a radially extending flange, and in that the bottom of the base body and the flange of the supporting body are connected to one another.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: November 7, 2023
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Wolfgang Großpietsch, Angelika Ebert, Monika Rößner, Christoph Margraf, Thomas Bauer
  • Patent number: 11708888
    Abstract: A shaft (W) for a motor vehicle transmission (G) includes four axial bore holes (B1, B2, B3, B4) for conducting fluid within the shaft (W). A central axis of each of the four bore holes (B1, B2, B3, B4) is spaced apart from an axis of rotation (WA) of the shaft (W). A radial distance (r1) between the central axis of at least two of the four bore holes (B1, B2, B3, B4) and the axis of rotation (WA) differs from a radial distance (r2) between the central axis of one of the remaining bore holes and the axis of rotation (WA). A transmission (G) for a motor vehicle with a shaft (W) is also provided.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: July 25, 2023
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Christoph Margraf, Carl Schilling, Martin Brehmer, Oliver Angele, Manuel Steinmann, Sebastian Freis, Felix Fink, Tamas Gyarmati, Stefan Benz-Breitweg, Robert Reiser, Christian Staiger
  • Patent number: 11359715
    Abstract: A shaft (W) for a motor vehicle transmission (G) may have axial bore holes positioned within the shaft and configured to guide fluid within the shaft. The shaft may have first, second, and third axial sections (W1, W2, W3), the second axial section being axially between the first and third axial sections. Fluid enters the axial bore holes in the second axial section and exits the axial bore holes in the first and third axial sections. One of the axial bore holes (B2; B1, B1a) is arranged, at least partially, in the first axial section and is radially spaced from an axis of rotation (WA) of the shaft. Another of the axial bore holes (B1RS; B_SE5, B3a) is arranged, at least partially, in the third axial section. The one of the axial bore holes (B2; B1, B1a) is coaxial with the other of the axial bore holes (B1RS; B_SE5, B3a).
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: June 14, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Christoph Margraf, Carl Schilling, Martin Brehmer, Oliver Angele, Manuel Steinmann, Sebastian Freis, Stefan Benz-Breitweg, Robert Reiser, Christian Staiger, Felix Fink, Tamas Gyarmati
  • Patent number: 11261943
    Abstract: A multi-stage planetary transmission for a bicycle or a pedelec includes a transmission input shaft (1), a transmission output shaft (2), and at least three planetary gear sets (VRS, VR1, VR2, RS1, RS2, NRS, NR1, NR2). A first planetary gear set (RS1) and a second planetary gear set (RS2) are configured as a main gear set and at least one further planetary gear set (VRS, VR1, VR2, NRS, NR1, NR2) is configured as a front-mounted gear set and/or as a rear-mounted gear set. At least three free-wheel clutches (F1, F2, F3, F4) and at least three brakes (B1, B2, B3, B4) are provided for implementing at least eight gears (G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, G11, G12, G13, G14, G15, G16). Moreover, the multi-stage transmission may be a bottom bracket transmission. In addition, a bicycle or pedelec with the multi-stage transmission is proposed.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 1, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Christoph Margraf, Thomas Riedisser, Ulrich Doerr, Kim Führer, Hagen Doepfert
  • Patent number: 11193559
    Abstract: A transmission having planetary gearsets (RS1, RS2, RS3, RS4, RS5). Elements (ST2, ST4) of gearsets (RS2, RS4) form input and output shafts, respectively. Element (SO1) of gearset (RS1) couples element (HO5) of gearset (RS5) and can be immobilized by shift element (A). Element (ST1) of gearset (RS1) couples element (HO4) of gearset (RS4). Element (HO1) of gearset (RS1) can be immobilized by shift element (B). Elements (SO4, ST2) of gearsets (RS4 RS2) can connect by shift element (C). Elements (HO2, SO3, SO5) of gearsets (RS2, RS3, RS5) couple and can couple element (SO4) of gearset (RS4) by shift element (E). An element of gearset (RS4) is connected to an element of gearset (RS3), while another element of gearset (RS4) can be connected by shift element (D) to another element of gearset (RS3). Elements (SO2 ST5) of gearsets (RS2, RS5) are connected and can be immobilized by shift element (F).
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: December 7, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Andreas Beisswenger, Christoph Margraf, Stefan Brom, Kai Bornträger, Michael Trübenbach, Johannes Glückler
  • Publication number: 20210370766
    Abstract: A shaft (W) for a motor vehicle transmission (G) includes four axial bore holes (B1, B2, B3, B4) for conducting fluid within the shaft (W). A central axis of each of the four bore holes (B1, B2, B3, B4) is spaced apart from an axis of rotation (WA) of the shaft (W). A radial distance (r1) between the central axis of at least two of the four bore holes (B1, B2, B3, B4) and the axis of rotation (WA) differs from a radial distance (r2) between the central axis of one of the remaining bore holes and the axis of rotation (WA). A transmission (G) for a motor vehicle with a shaft (W) is also provided.
    Type: Application
    Filed: October 23, 2019
    Publication date: December 2, 2021
    Inventors: Christoph Margraf, Carl Schilling, Martin Brehmer, Oliver Angele, Manuel Steinmann, Sebastian Freis, Felix Fink, Tamas Gyarmati, Stefan Benz-Breitweg, Robert Reiser, Christian Staiger
  • Publication number: 20210328479
    Abstract: A rotor carrier for a rotor of an electric machine and to a hybrid module with such a rotor carrier. The rotor carrier includes a tubular base body having elements on an outer circumferential surface facing the rotor for connection between base body and rotor, the base body is connected to a hub by a connection element. The connection element has an axial portion which extends along a part of the axial length of the base body and runs coaxial to the latter, in that receptacles for parts of a clutch are provided on an inner circumferential surface of the axial portion remote of the base body, and in that the connection element has a flange area adjoining the axial portion.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 21, 2021
    Inventors: Wolfgang GROßPIETSCH, Angelika EBERT, Monika RÖßNER, Christoph MARGRAF, Thomas BAUER
  • Publication number: 20210277980
    Abstract: A transmission having planetary gearsets (RS1, RS2, RS3, RS4, RS5). Elements (ST2, ST4) of gearsets (RS2, RS4) form input and output shafts, respectively. Element (SO1) of gearset (RS1) couples element (HO5) of gearset (RS5) and can be immobilized by shift element (A). Element (ST1) of gearset (RS1) couples element (HO4) of gearset (RS4). Element (HO1) of gearset (RS1) can be immobilized by shift element (B). Elements (SO4, ST2) of gearsets (RS4 RS2) can connect by shift element (C). Elements (HO2, SO3, SO5) of gearsets (RS2, RS3, RS5) couple and can couple element (SO4) of gearset (RS4) by shift element (E). An element of gearset (RS4) is connected to an element of gearset (RS3), while another element of gearset (RS4) can be connected by shift element (D) to another element of gearset (RS3). Elements (SO2 ST5) of gearsets (RS2, RS5) are connected and can be immobilized by shift element (F).
    Type: Application
    Filed: November 17, 2017
    Publication date: September 9, 2021
    Inventors: Peter ZIEMER, Andreas BEISSWENGER, Christoph MARGRAF, Stefan BROM, Kai BORNTRÄGER, Michael TRÜBENBACH, Johannes GLÜCKLER
  • Publication number: 20210268889
    Abstract: A rotor carrier for a rotor of an electric machine and to a hybrid module with such a rotor carrier. The rotor carrier includes a pot-shaped base body. The base body overlaps only a portion of the axial extension of the rotor, in that the rotor carrier comprises a second supporting body that has elements on an outer circumferential surface for a positive engagement connection and/or frictional engagement connection between supporting body and rotor, in that the supporting body has a radially extending flange, and in that the bottom of the base body and the flange of the supporting body are connected to one another.
    Type: Application
    Filed: July 8, 2019
    Publication date: September 2, 2021
    Inventors: Wolfgang GROßPIETSCH, Angelika EBERT, Monika RÖßNER, Christoph MARGRAF, Thomas BAUER
  • Publication number: 20210207689
    Abstract: A multi-stage planetary transmission for a bicycle or a pedelec includes a transmission input shaft (1), a transmission output shaft (2), and at least three planetary gear sets (VRS, VR1, VR2, RS1, RS2, NRS, NR1, NR2). A first planetary gear set (RS1) and a second planetary gear set (RS2) are configured as a main gear set and at least one further planetary gear set (VRS, VR1, VR2, NRS, NR1, NR2) is configured as a front-mounted gear set and/or as a rear-mounted gear set. At least three free-wheel clutches (F1, F2, F3, F4) and at least three brakes (B1, B2, B3, B4) are provided for implementing at least eight gears (G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, G11, G12, G13, G14, G15, G16). Moreover, the multi-stage transmission may be a bottom bracket transmission. In addition, a bicycle or pedelec with the multi-stage transmission is proposed.
    Type: Application
    Filed: April 29, 2019
    Publication date: July 8, 2021
    Inventors: Peter Ziemer, Christoph Margraf, Thomas Riedisser, Ulrich Doerr, Kim Führer, Hagen Doepfert
  • Patent number: 10995827
    Abstract: A multi-speed transmission has drive and output shafts, three front-mounted and two rear-mounted planetary gear sets, and shift elements which can be engaged to selectively implement at least eleven forward gears and one reverse gear. The front gear sets are connected to one element of the rear gear sets. Five shift elements are assigned to the front gear sets and two are assigned to the rear gear sets, such that the front gear sets transmit seven output speeds to the rear gear sets. If normalized to the input speed of the drive shaft, at least one output speed of the front gear sets is less than 0, one output speed is greater than 1, one output speed is equal to 0, one output speed is equal to 1 and two output speeds are between 0 and 1.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: May 4, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Kai Bornträger, Christoph Margraf, Andreas Beisswenger, Stefan Brom
  • Patent number: 10955031
    Abstract: A multi-speed transmission having drive and output shafts, front-mounted planetary gearsets, rear-mounted planetary gearsets and six shift elements. Selective engagement of shift elements selectively renders a drive shaft speed and speeds generated in the front gearsets for achieving a reverse gear and twelve forward gears via the rear gearsets transmissible as an output speed to the output shaft. Four shift elements are assigned to the front gearsets and two are assigned to the rear gearsets. At least one front gearset is rigidly connected to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to the rear gearsets. If normalized to the drive shaft input speed, one output speed is smaller than 0, three output speeds are between 0 and 1, one output speed is equal to 1 and one output speed is greater than 1.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: March 23, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Kai Bornträger, Christoph Margraf, Andreas Beisswenger, Stefan Brom
  • Patent number: 10876600
    Abstract: A multi-speed transmission having drive and output shafts, three front-mounted and two rear-mounted planetary gearsets, six shift elements which are selectively engaged to render a speed of the drive shaft and speeds generated in the front gearsets to achieve at least one reverse and twelve forward gears via at least one of the rear gearsets transmissible as the output shaft speed. Four shift elements are assigned to the front gearsets and two shift elements are assigned to the rear gearsets. At least one of the front gearsets is fixed to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to at least one of the rear gearsets. If normalized to the input speed of the drive shaft, one of the six output speeds is less than 0, four are between 0 and 1, and one is equal to 1.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: December 29, 2020
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Kai Bornträger, Christoph Margraf, Andreas Beisswenger, Stefan Brom
  • Patent number: 10759265
    Abstract: A transmission having five planetary gearsets and seven shift elements for achieving various ratios between drive and output shafts. A forward gearset has three shafts. Two intermediate gearsets have four shafts. Two main gearsets have at least four shafts. Depending on the shift states of the second and third shift elements, the forward gearset can generate two rotational speeds at the output side, which transfer from a forward gearset shaft to an intermediate gearset shaft. Depending on the shift states of the first to fifth shift elements, the intermediate gearset can generate eight rotational speeds at the output side, which pass from another intermediate gearset shaft to a main gearset shaft. Depending on the shift states of the seven shift elements, the main gearset can generate up to fourteen forward and two reverse gears at the output side, which are transferred by another main gearset shaft to the output shaft.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: September 1, 2020
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Kai Bornträger, Christoph Margraf, Stefan Brom, Andreas Beisswenger, Michael Trübenbach, Johannes Glückler
  • Publication number: 20200271213
    Abstract: A shaft (W) for a motor vehicle transmission (G) may have axial bore holes positioned within the shaft and configured to guide fluid within the shaft. The shaft may have first, second, and third axial sections (W1, W2, W3), the second axial section being axially between the first and third axial sections. Fluid enters the axial bore holes in the second axial section and exits the axial bore holes in the first and third axial sections. One of the axial bore holes (B2; B1, B1a) is arranged, at least partially, in the first axial section and is radially spaced from an axis of rotation (WA) of the shaft. Another of the axial bore holes (B1RS; B_SE5, B3a) is arranged, at least partially, in the third axial section. The one of the axial bore holes (B2; B1, B1a) is coaxial with the other of the axial bore holes (B1RS; B_SE5, B3a).
    Type: Application
    Filed: February 20, 2020
    Publication date: August 27, 2020
    Inventors: Christoph Margraf, Carl Schilling, Martin Brehmer, Oliver Angele, Manuel Steinmann, Sebastian Freis, Stefan Benz-Breitweg, Robert Reiser, Christian Staiger, Felix Fink, Tamas Gyarmati
  • Publication number: 20200079206
    Abstract: A transmission having five planetary gearsets and seven shift elements for achieving various ratios between drive and output shafts. A forward gearset has three shafts. Two intermediate gearsets have four shafts. Two main gearsets have at least four shafts. Depending on the shift states of the second and third shift elements, the forward gearset can generate two rotational speeds at the output side, which transfer from a forward gearset shaft to an intermediate gearset shaft. Depending on the shift states of the first to fifth shift elements, the intermediate gearset can generate eight rotational speeds at the output side, which pass from another intermediate gearset shaft to a main gearset shaft. Depending on the shift states of the seven shift elements, the main gearset can generate up to fourteen forward and two reverse gears at the output side, which are transferred by another main gearset shaft to the output shaft.
    Type: Application
    Filed: November 16, 2017
    Publication date: March 12, 2020
    Inventors: Peter ZIEMER, Kai BORNTRÄGER, Christoph MARGRAF, Stefan BROM, Andreas BEISSWENGER, Michael TRÜBENBACH, Johannes GLÜCKLER
  • Publication number: 20200056680
    Abstract: A multi-speed transmission having drive and output shafts, front-mounted planetary gearsets, rear-mounted planetary gearsets and six shift elements. Selective engagement of shift elements selectively renders a drive shaft speed and speeds generated in the front gearsets for achieving a reverse gear and twelve forward gears via the rear gearsets transmissible as an output speed to the output shaft. Four shift elements are assigned to the front gearsets and two are assigned to the rear gearsets. At least one front gearset is rigidly connected to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to the rear gearsets. If normalized to the drive shaft input speed, one output speed is smaller than 0, three output speeds are between 0 and 1, one output speed is equal to 1 and one output speed is greater than 1.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 20, 2020
    Inventors: Peter ZIEMER, Kai BORNTRÄGER, Christoph MARGRAF, Andreas BEISSWENGER, Stefan BROM
  • Patent number: 10527108
    Abstract: A rotating shifting element arrangement for an automatic transmission of a vehicle, having a cylinder element (2), is proposed, in which an actuating piston (3) for actuating a shifting element (1) is arranged in an axially movable way, a compensating cavity (4) of the shifting element (1) being provided by way of the actuating piston (3) and an oil dam (5), and wherein the oil dam (5) is fixed radially outside the piston face (6) of the actuating piston (3).
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: January 7, 2020
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventor: Christoph Margraf
  • Patent number: 10480641
    Abstract: A system for locking and releasing a shifting position of a shifting element that is hydraulically actuatable by an actuating pressure is provided. The shifting element is arranged coaxially with a transmission shaft. The system includes a stop valve. The stop valve is subjectable to a control pressure that is separate from the actuating pressure of the shifting element. The stop valve is arranged radially inside the shifting element in the transmission housing.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: November 19, 2019
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Josef Haupt, Christoph Margraf, Markus Herrmann, Thilo Schmidt, Ulrich Doerr, Christian Sibla, Stefan Beck, Maik Wiesner, Stefan Brom