Patents by Inventor Ralph GUEHRER

Ralph GUEHRER 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: 12655905
    Abstract: A transmission device (5) for an electrically drivable vehicle axle (1) includes a transmission input shaft (7), a transmission output shaft (10) connected thereto via gear-wheel pairs (8, 9), and a parking lock device (15). The parking lock device (15) is arranged in a transmission housing (11) and includes an electric actuator (16) for actuating a locking pawl (18) engageable with a parking interlock gear (19) operatively connected to the transmission output shaft (10). The locking pawl and the parking interlock gear (19) are arranged in an interior space (14) of the transmission housing (11) that is acted upon by oil, and the electric actuator (16) is arranged in an oil-free interior space (13) of the transmission housing (11). The output shaft (21) of the electric actuator (16) extends through an intermediate wall (12) and is operatively connected to the locking pawl.
    Type: Grant
    Filed: October 25, 2023
    Date of Patent: June 16, 2026
    Assignee: ZF Friedrichshafen AG
    Inventors: Matthias List, Tobias Miller, Stefan Borchert, Jörg Buhl, Stephan Hahn, Marco Kiesel, Ralph Guehrer
  • Publication number: 20240141990
    Abstract: A transmission device (5) for an electrically drivable vehicle axle (1) includes a transmission input shaft (7), a transmission output shaft (10) connected thereto via gear-wheel pairs (8, 9), and a parking lock device (15). The parking lock device (15) is arranged in a transmission housing (11) and includes an electric actuator (16) for actuating a locking pawl (18) engageable with a parking interlock gear (19) operatively connected to the transmission output shaft (10). The locking pawl and the parking interlock gear (19) are arranged in an interior space (14) of the transmission housing (11) that is acted upon by oil, and the electric actuator (16) is arranged in an oil-free interior space (13) of the transmission housing (11). The output shaft (21) of the electric actuator (16) extends through an intermediate wall (12) and is operatively connected to the locking pawl.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 2, 2024
    Inventors: Matthias List, Tobias Miller, Stefan Borchert, Jörg Buhl, Stephan Hahn, Marco Kiesel, Ralph Guehrer
  • Publication number: 20230223814
    Abstract: A stator arrangement of an electric machine having a substantially cylindrical stator carrier with a radially inner joining surface and with a radially outer joining surface. A lamination stack is arranged at the inner joining surface, and the stator carrier with the outer joining surface is received by an inner joining surface of a housing of the electric machine. A connection between the stator carrier and the housing is carried out with an interference fit, and one of the joining surfaces of the stator carrier and housing, which cooperate with one another, is formed interrupted in circumferential direction.
    Type: Application
    Filed: June 8, 2021
    Publication date: July 13, 2023
    Inventors: Alexander FRANK, Norbert LOHAUS, Ralph GUEHRER