Patents by Inventor Dirk LETTOW

Dirk LETTOW 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: 20230278623
    Abstract: A power steering assembly for an electro-mechanical power steering system of motor vehicles, in particular utility vehicles, includes a steering gear. The steering gear is designed to transmit a rotational movement introduced by a steering element, in particular by a steering wheel, via an input side of the steering gear, in particular via an input shaft of the steering gear, to an output side of the steering gear. The power steering assembly is designed to convert a movement derived from the output side of the steering gear into a rotational movement of at least one wheel of the motor vehicle about a steering axis. The power steering assembly is characterized in that the power steering assembly has an absorption unit for at least partial absorption of roadside shocks from the wheel of the motor vehicle.
    Type: Application
    Filed: July 5, 2021
    Publication date: September 7, 2023
    Inventors: Jens-Hauke MUELLER, Dimitri EPSTEIN, Dirk LETTOW, Sven KIRSCHBAUM
  • Publication number: 20230264737
    Abstract: A shaft arrangement for a steering gear has an input shaft, an output shaft and a torsion rod. The torsion rod is connected in a rotationally secure manner to the input shaft in an input-side connection region of the shaft arrangement. The torsion rod is connected in a rotationally secure manner to the output shaft in an output-side connection region of the shaft arrangement. The input-side connection region is spaced apart from the output-side connection region. The shaft arrangement has a rotation prevention member, wherein the rotation prevention member limits a rotation of the input shaft relative to the output shaft to a maximum rotation angle and, when the maximum rotation angle is reached, can transmit a torque from the input shaft to the output shaft.
    Type: Application
    Filed: July 5, 2021
    Publication date: August 24, 2023
    Inventors: Dimitri EPSTEIN, Dirk LETTOW, Sven KIRSCHBAUM
  • Patent number: 11614146
    Abstract: A planetary gear transmission has a sun gear, a ring gear, at least one first planet gear, and at least one second planet gear. The first planet gear and the second planet gear are arranged on a planet carrier, and the sun gear, the ring gear, the first planet gear, and the second planet gear mesh with one another. The planetary gear transmission is characterized in that the planet carrier has a first planet carrier part and a second planet carrier part. The first planet carrier part and the second planet carrier part are designed such that the planet carrier parts are rotated relative to each other starting from a base position and can be fixed in their respective rotated position relative to each other, wherein the at least one first planet gear is connected to the first planet carrier part, and the at least one second planet gear is connected to the second planet carrier part.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 28, 2023
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Dirk Lettow, Sven Kirschbaum, Jens-Hauke Mueller
  • Publication number: 20220268339
    Abstract: A planetary gear transmission has a sun gear, a ring gear, at least one first planet gear, and at least one second planet gear. The first planet gear and the second planet gear are arranged on a planet carrier, and the sun gear, the ring gear, the first planet gear, and the second planet gear mesh with one another. The planetary gear transmission is characterized in that the planet carrier has a first planet carrier part and a second planet carrier part. The first planet carrier part and the second planet carrier part are designed such that the planet carrier parts are rotated relative to each other starting from a base position and can be fixed in their respective rotated position relative to each other, wherein the at least one first planet gear is connected to the first planet carrier part, and the at least one second planet gear is connected to the second planet carrier part.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 25, 2022
    Inventors: Dirk LETTOW, Sven KIRSCHBAUM, Jens-Hauke MUELLER