Patents by Inventor Frank Riggenmann

Frank Riggenmann 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).

  • Method for changing gear stages and transmission arrangement
    Patent number: 9551416
    Abstract: The invention relates to a method for changing gear stages in a transmission having a hydrostatic transmission and a downstream manual transmission, and a corresponding transmission arrangement. First, a desire to shift is detected within the manual transmission to change the gear stages. The hydrostatic transmission and the downstream manual transmission are activated to change the gear stage of the downstream transmission. Whether the gear stage to be engaged through a gear stage change was successfully engaged is detected by a detection device, which is connected to an electronic control unit of the transmission arrangement. If the engagement of the gear stage to be engaged is not successful, the original gear stage is reengaged. After the engagement of the original gear stage, the downstream transmission is again activated such that the gear stage to be engaged is engaged.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: January 24, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Peter Dschida, Frank Riggenmann, Karl-Heinz Vogl, Michael Frasch, Heinz Hense
  • METHOD FOR CHANGING GEAR STAGES AND TRANSMISSION ARRANGEMENT
    Publication number: 20110172888
    Abstract: The invention relates to a method for changing gear stages in a transmission having a hydrostatic transmission and a downstream manual transmission, and a corresponding transmission arrangement. First, a desire to shift is detected within the manual transmission to change the gear stages. The hydrostatic transmission and the downstream manual transmission are activated to change the gear stage of the downstream transmission. Whether the gear stage to be engaged through a gear stage change was successfully engaged is detected by a detection device, which is connected to an electronic control unit of the transmission arrangement. If the engagement of the gear stage to be engaged is not successful, the original gear stage is reengaged. After the engagement of the original gear stage, the downstream transmission is again activated such that the gear stage to be engaged is engaged.
    Type: Application
    Filed: August 5, 2009
    Publication date: July 14, 2011
    Inventors: Peter Dschida, Frank Riggenmann, Karl-Heinz Vogl, Michael Frasch, Heinz Hense