Patents by Inventor Sascha GROETZKI

Sascha GROETZKI 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).

  • Drive assembly for a two-wheeled vehicle
    Patent number: 11746852
    Abstract: A drive assembly for a two-wheeled vehicle, wherein a closed chain is guided around a drive pinion and a sprocket for output. The chain is formed by pins, on each a bush rotatable about the center longitudinal axis of the pin, a roller provided on each bushing, for rotation around the bushing and has play, and the pins being connected to each other at two opposite ends by means of plates. The outer surface of the bushings and the rollers is coated with pure ta-C, having no further chemical elements except for unavoidable trace elements resulting from production in a PVD method. An Ra roughness between 0.03 ?m and 0.2 ?m and/or an Rz roughness between 0.3 ?m and 2 ?m is adhered to the surface of the coatings. The surfaces of the pinion and the sprocket in contact with the rollers do not have a coating of diamond-like carbon.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: September 5, 2023
    Assignees: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, FRAUNHOFER-GESELLSCHAFT ZUR FOERDERONG DER ANGEWANDTEN FORSCHUNG E.V
    Inventors: Franz-Josef Wetzel, Sascha Groetzki, Lionel Mathern, Volker Weihnacht, Andreas Leson
  • DRIVE ASSEMBLY FOR A TWO-WHEELED VEHICLE
    Publication number: 20200232541
    Abstract: A drive assembly for a two-wheeled vehicle, wherein a closed chain is guided around a drive pinion and a sprocket for output. The chain is formed by pins, on each a bush rotatable about the center longitudinal axis of the pin, a roller provided on each bushing, for rotation around the bushing and has play, and the pins being connected to each other at two opposite ends by means of plates. The outer surface of the bushings and the rollers is coated with pure ta-C, having no further chemical elements except for unavoidable trace elements resulting from production in a PVD method. An Ra roughness between 0.03 ?m and 0.2 ?m and/or an Rz roughness between 0.3 ?m and 2 ?m is adhered to the surface of the coatings. The surfaces of the pinion and the sprocket in contact with the rollers do not have a coating of diamond-like carbon.
    Type: Application
    Filed: November 5, 2018
    Publication date: July 23, 2020
    Applicants: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Franz-Josef WETZEL, Sascha GROETZKI, Lionel MATHERN, Volker WEIHNACHT, Andreas LESON