Patents by Inventor Ulrich Hantke

Ulrich Hantke 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).

  • Planetary gearbox having nested planetary gear stages
    Patent number: 8613687
    Abstract: A planetary gearbox, for an automatic transmission of a motor vehicle, comprising two stages, each provided with a sun gear, a ring gear and interposed planetary gears. The ring gear of the first planetary stage also forms the sun gear of the second stage, and the planetary gears of both stages are guided by a common planet carrier, produced from a casting material, which accommodates the planetary gears of the first stage at an axial offset position to the planetary gears of the second stage. The planet carrier is designed as one-piece such that pockets are respectively disposed in the planet carrier for receiving the planetary gears of the first stage at an offset angle, in the circumferential direction, to the pockets for receiving the planetary gears of the second stage, so that it is possible to form the pockets during casting using slides.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: December 24, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Hagen Döpfert, Alexander Bucher, Peter Ziemer, Ulrich Hantke
  • PLANETARY GEARBOX HAVING NESTED PLANETARY GEAR STAGES
    Publication number: 20120083384
    Abstract: A planetary gearbox, for an automatic transmission of a motor vehicle, comprising two stages, each provided with a sun gear, a ring gear and interposed planetary gears. The ring gear of the first planetary stage also forms the sun gear of the second stage, and the planetary gears of both stages are guided by a common planet carrier, produced from a casting material, which accommodates the planetary gears of the first stage at an axial offset position to the planetary gears of the second stage. The planet carrier is designed as one-piece such that pockets are respectively disposed in the planet carrier for receiving the planetary gears of the first stage at an offset angle, in the circumferential direction, to the pockets for receiving the planetary gears of the second stage, so that it is possible to form the pockets during casting using slides.
    Type: Application
    Filed: May 19, 2010
    Publication date: April 5, 2012
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Ziemer, Hagen Doepfert, Alexander Bucher, Ulrich Hantke