Patents by Inventor Hartmut Vossberg

Hartmut Vossberg 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).

  • Hydraulic steering device with variable ratio
    Patent number: 11485410
    Abstract: A variable ratio hydraulic steering device with two or more orbit displacers ensures steering with low actuating forces even in the event of a total or partial failure of the oil flow supply. In the event of a total or partial failure of the oil flow supply, the device is capable of switching from one orbit displacer to another, if necessary, independently of the pressure at the inlet connection of the steering device.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 1, 2022
    Assignee: WHITE DRIVE MOTORS AND STEERING GMBH
    Inventors: Thomas Pippes, Erhard Bergmann, Hartmut Voßberg
  • Hydraulic steering facility with load signal
    Patent number: 10960923
    Abstract: The invention relates to a hydraulic steering facility for mobile systems, with a steering circuit for a steering facility and a working circuit for a working hydraulic system, whereby the steering circuit and the working hydraulic system are connected to a supply pump via a shared flow dividing valve and the flow dividing valve is connected to a load signal connection of the steering device. It is provided that the steering facility has an adjustable input choke that is connected via an inflow connection of the steering facility to the flow dividing valve, between the load signal connection and downstream of the input choke, a parallel circuit consisting of a choke and an adjustable second load signal choke is arranged, and the load signal connection is further connected via an adjustable first load signal choke to a return flow connection of the steering facility.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: March 30, 2021
    Assignee: Danfoss Power Solutions Parchim GmbH
    Inventors: Erhard Bergmann, Manfred Schildmann, Hartmut Vossberg
  • Hydraulic Steering Device with Variable Ratio
    Publication number: 20200108862
    Abstract: A variable ratio hydraulic steering device with two or more orbit displacers ensures steering with low actuating forces even in the event of a total or partial failure of the oil flow supply. In the event of a total or partial failure of the oil flow supply, the device is capable of switching from one orbit displacer to another, if necessary, independently of the pressure at the inlet connection of the steering device.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Thomas PIPPES, Erhard Bergmann, Hartmut Vossberg
  • Hydraulic Steering Facility with Load Signal
    Publication number: 20190031233
    Abstract: The invention relates to a hydraulic steering facility for mobile systems, with a steering circuit for a steering facility and a working circuit for a working hydraulic system, whereby the steering circuit and the working hydraulic system are connected to a supply pump via a shared flow dividing valve and the flow dividing valve is connected to a load signal connection of the steering device. It is provided that the steering facility has an adjustable input choke that is connected via an inflow connection of the steering facility to the flow dividing valve, between the load signal connection and downstream of the input choke, a parallel circuit consisting of a choke and an adjustable second load signal choke is arranged, and the load signal connection is further connected via an adjustable first load signal choke to a return flow connection of the steering facility.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 31, 2019
    Applicant: Hydraulik Nord Fluidtechnik GmbH & Co. KG
    Inventors: Erhard Bergmann, Manfred Schildmann, Hartmut Vossberg