Patents by Inventor Tobias Schlittenbauer

Tobias Schlittenbauer 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: 12241509
    Abstract: The invention relates to a drive unit (10) for a vehicle, comprising an electric machine (12) having a rotor shaft (14) and a transmission (16) having a transmission shaft (18). According to the invention, the rotor shaft (14) and the transmission shaft (18) are interlocking and coupled by means of an interlocking toothing (44), wherein a lubricant channel (46) is formed in the transmission shaft (18), which feeds into an inner space (48) of the rotor shaft (14) at the end facing the rotor shaft (14) in order to provide lubricant for the interlocking toothing (44), wherein the rotor shaft (14) has an end side (50) at the axial end facing the transmission shaft (18), on which end side one or more openings (52) are formed, extending from an inner circumference (54) of the rotor shaft (14) bordering the inner space (48) to the outer circumference (56) thereof, such that the lubricant channel (46) is fluidically connected to the openings (52) via the inner space (48) and the interlocking toothing (44).
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: March 4, 2025
    Assignee: Robert Bosch GmbH
    Inventors: Janek Kraeuter, Timo Kiekbusch, Tobias Schlittenbauer, Witold Techman, Zhengyu Liu
  • Publication number: 20250020202
    Abstract: Proposed is an oil duct part (1) to be mounted in a transmission (100), in particular a motor vehicle transmission, wherein said oil duct part (1) comprises a conduit (2) with an inlet port (11) and an outlet port (12), wherein the conduit (2) has an oil conducting direction (F) from the inlet port (11) to the outlet port (12) and has a conduit wall (21) that is closed all around perpendicularly to the oil conducting direction (F), wherein the oil duct part (1) further comprises at least one oil collection region (13a) for collecting oil conducted through the conduit (2), wherein the oil duct part (1) also comprises at least one drain (15a) for oil from the at least one oil collection region (13a).
    Type: Application
    Filed: November 7, 2022
    Publication date: January 16, 2025
    Inventors: Csaba Hegedus, Manfred Saretzki, Peter Zold, Tobias Schlittenbauer
  • Publication number: 20230235792
    Abstract: The invention relates to a drive unit (10) for a vehicle, comprising an electric machine (12) having a rotor shaft (14) and a transmission (16) having a transmission shaft (18). According to the invention, the rotor shaft (14) and the transmission shaft (18) are interlocking and coupled by means of an interlocking toothing (44), wherein a lubricant channel (46) is formed in the transmission shaft (18), which feeds into an inner space (48) of the rotor shaft (14) at the end facing the rotor shaft (14) in order to provide lubricant for the interlocking toothing (44), wherein the rotor shaft (14) has an end side (50) at the axial end facing the transmission shaft (18), on which end side one or more openings (52) are formed, extending from an inner circumference (54) of the rotor shaft (14) bordering the inner space (48) to the outer circumference (56) thereof, such that the lubricant channel (46) is fluidically connected to the openings (52) via the inner space (48) and the interlocking toothing (44).
    Type: Application
    Filed: May 4, 2021
    Publication date: July 27, 2023
    Inventors: Janek Kraeuter, Timo Kiekbusch, Tobias Schlittenbauer, Witold Techman, Zhengyu Liu
  • Patent number: 11448291
    Abstract: The invention relates to a power-shift multi-speed transmission (10), comprising at least one stepped planet gear (20), which revolves around a first sun gear (18) and in a first ring gear (26). The first ring gear (26) is held on a lockable freewheel (28). A first planet gear step (22) of the stepped planet gear (20) revolves in the first ring gear (26), while a second planet gear step (24) revolves in a second ring gear (36), with which at least one brake (34) is associated.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: September 20, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Patent number: 11448298
    Abstract: The invention relates to a multi-speed planetary transmission (10). The multi-speed planetary transmission (10) comprises a driveshaft (12), which comprises a sun gear (18) and a ring gear (19), and an output shaft (14), which comprises a planet carrier with at least one planet gear (30). The drive shaft (12) and the output shaft (14) can be connected together or separated from each other by means of a clutch (20). The multi-speed planetary transmission (10) has a freewheel (26), via which a shift is carried out between a first transmission ratio i_1 and a second transmission ratio i_2 under a load using the clutch (20).
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 20, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Patent number: 11312231
    Abstract: The invention relates to a power-shift multi-speed transmission (10) provided in the power train of a vehicle, comprising at least one sun gear (14, 80), at least one stepped planetary gear (16, 22), at least one ring gear (34, 36), and an input shaft (12) and an output shaft (40). The power-shift multi-speed transmission (10) can be shifted into a shift mode of a first speed or into a shift mode of a second speed and vice versa by means of the at least one stepped planetary gear (16, 22). A first brake (30) is associated with a first ring gear (34) and a second brake (32) is associated with a second ring gear (36). Depending on the actuation of these brakes, in the shift modes there is at least one torque flow under acceleration, or at least one torque flow on overrun, through the power-shift multi-speed transmission (10).
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: April 26, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Publication number: 20210404536
    Abstract: The invention relates to a multi-speed transmission (10) which is driven via an electric machine (64). The multi-speed transmission (10) has a planet carrier (22), on which at least one first and second stepped planetary gear (24, 30) are received. First planetary steps (26, 32) of the stepped planetary gears (24, 30) mesh with a first sun gear (18), and second planetary steps (28, 34) of the stepped planetary gears (24, 30) mesh with a second sun gear (20, 54). A first brake (38) is paired with the first sun gear (18), and a second brake (42) is paired with the second sun gear (20, 54), the actuation of each said brake producing a first gear ratio, a second gear ratio for a parking lock function, and an overlapping gear shift.
    Type: Application
    Filed: October 16, 2019
    Publication date: December 30, 2021
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Publication number: 20210323399
    Abstract: The invention relates to a power-shift multi-speed transmission (10) provided in the power train of a vehicle, comprising at least one sun gear (14, 80), at least one stepped planetary gear (16, 22), at least one ring gear (34, 36), and an input shaft (12) and an output shaft (40). The power-shift multi-speed transmission (10) can be shifted into a shift mode of a first speed or into a shift mode of a second speed and vice versa by means of the at least one stepped planetary gear (16, 22). A first brake (30) is associated with a first ring gear (34) and a second brake (32) is associated with a second ring gear (36). Depending on the actuation of these brakes, in the shift modes there is at least one torque flow under acceleration, or at least one torque flow on overrun, through the power-shift multi-speed transmission (10).
    Type: Application
    Filed: July 10, 2019
    Publication date: October 21, 2021
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Publication number: 20210231199
    Abstract: The invention relates to a multi-speed planetary transmission (10). The multi-speed planetary transmission (10) comprises a driveshaft (12), which comprises a sun gear (18) and a ring gear (19), and an output shaft (14), which comprises a planet carrier with at least one planet gear (30). The drive shaft (12) and the output shaft (14) can be connected together or separated from each other by means of a clutch (20).
    Type: Application
    Filed: April 30, 2019
    Publication date: July 29, 2021
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed
  • Publication number: 20210215232
    Abstract: The invention relates to a power-shift multi-speed transmission (10), comprising at least one stepped planet gear (20), which revolves around a first sun gear (18) and in a first ring gear (26). The first ring gear (26) is held on a lockable freewheel (28). A first planet gear step (22) of the stepped planet gear (20) revolves in the first ring gear (26), while a second planet gear step (24) revolves in a second ring gear (36), with which at least one brake (34) is associated.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 15, 2021
    Inventors: Tobias Schlittenbauer, Ianislav Krastev, Wael Mohamed