Patents Assigned to Liebherr-Hydraulikbagger GmbH
  • Patent number: 12012314
    Abstract: A working machine, in particular a material handling machine, has a boom and a boom bracing actuated by an actuator operatively connected to the boom bracing by a lever rotatably articulated to a turntable, to introduce the required tensile force into the bracing.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: June 18, 2024
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Sebastian Rauh, Tobias Riedmiller, Sebastian Stanger, Bernd Wager, Constantin Wegmann
  • Patent number: 11970836
    Abstract: The present invention relates to a mobile work machine, in particular to an excavator, that comprises an undercarriage having a tracked chassis, a rail mounting, or a wheeled chassis, a superstructure having an attachment fastened thereto, and a slewing ring that rotatably connects the undercarriage and the superstructure to one another. The work machine is characterized by a decentralized energy supply and/or by a decentralized supply network, preferably a DC supply network, and a slip ring for transferring electrical energy between the superstructure and the undercarriage.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: April 30, 2024
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Daniel Bayer, Dirk Asam
  • Patent number: 11261580
    Abstract: The application relates to an operating device for operating an implement with at least one attachment, comprising at least one manual control unit and at least one controller/regulator, wherein the controller/regulator is equipped to actuate the attachment on the basis of a single control movement of the manual control unit, which is detectable by means of a single detection means provided on the manual control unit, for carrying out a linear movement.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: March 1, 2022
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
  • Patent number: 11072908
    Abstract: The invention relates to a work machine having an operator's cabin comprising at least one window or screen.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 27, 2021
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
  • Patent number: 10996667
    Abstract: The present invention relates to a construction machine, in particular an earth-moving machine, having at least one control panel for inputting operator commands for the control of the construction machine, wherein the control panel has at least one display means for representing an operating interface that can be dynamically generated for the machine control; and in that a control unit is provided that recognizes a change of the mode of operation of the construction machine and adapts the operating interface in dependence on the change of the mode of operation.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 4, 2021
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
  • Patent number: 10919514
    Abstract: The present disclosure relates to an apparatus for controlling/regulating the travel speed of a utility vehicle comprising at least one drive motor, at least one hydraulic pump, at least one control slide valve, at least one hydraulic travel motor, at least one further hydraulic drive, as well as at least one controller. In accordance with the present disclosure, the travel speed of the at least one hydraulic travel motor is controlled/regulated via at least the speed of the drive motor, while the at least one further hydraulic drive does not provide any drive power.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: February 16, 2021
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Johannes Lang, Bernhard Meitinger
  • Patent number: 10894698
    Abstract: The present disclosure relates to a cabin lifter for a material transfer unit comprising at least one hydraulic cylinder supported in a damped manner. The present disclosure is further directed to a corresponding damping bush for damping the hydraulic cylinder and to a material transfer unit comprising a corresponding cabin lifter.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: January 19, 2021
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Stephan Henkel, Phillip Altvater
  • Patent number: 10883254
    Abstract: The invention relates to an operating unit for a working machine with at least one boom, wherein the operating device is configured to generate control signals for actuating the working machine in dependence on at least one joint position of a hand of an operator, and wherein the operating device comprises at least one operating unit.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: January 5, 2021
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Gerhard Bolz, Florian Mang, Dieter Ansorge
  • Patent number: 10773629
    Abstract: The present invention relates to a construction machine having at least one material receiver that is adjustable by means of at least one hydraulic actuator for unloading, with the required feed pressure for the actuator actuation being able to be provided by a hydraulic circuit of the construction machine and with the feed pressure being able to be limited to a limit pressure by means of at least one pressure limiting device, wherein the construction machine comprises a weighing system for determining the current load weight of the material receiver; and a control for the hydraulic circuit is provided that adapts the limit pressure of the pressure limiting device in dependence on the determined load weight.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: September 15, 2020
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Bernhard Meitinger, Volker Hilsenbeck
  • Patent number: 10214873
    Abstract: The invention relates to a valve unit for the exclusive hydraulic actuation of the locking means of a mechanical quick-changer for attachments of a construction machine, wherein the valve unit comprises a feed pressure connector for applying the feed pressure, a first valve unit outlet for connecting an unlocking pressure line, a second valve unit outlet for connecting a locking pressure line, at least one discharge to the tank, and at least two switchable directional valves, with the feed pressure connector being connected or connectable to the second valve unit outlet via a serial connection of the at least two switchable directional valves.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 26, 2019
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Simon Meier, Thomas Zitterbart
  • Patent number: 10132057
    Abstract: The present invention relates to a traveling working machine, in particular a hydraulic excavator, with a traveling gear and with a hydraulic service brake system for the traveling gear, which is supplied with brake pressure via at least one brake valve. In accordance with the invention, the brake valve can be actuated electrically, wherein it is connected with a control element via an electric control line, by means of which an operator can brake the traveling working machine.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: November 20, 2018
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventor: Simon Meier
  • Patent number: 9897115
    Abstract: The present disclosure relates to a hydraulic system with at least two main control valves and with a hydraulic pilot control system for actuating the main control valves, wherein the hydraulic pilot control system and/or the main control valves are constructed such that the at least two main control valves open one after the other.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 20, 2018
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventor: Simon Meier
  • Patent number: 9463783
    Abstract: A braking apparatus for work machines has at least two brakes, each having at least one braking circuit. The braking circuits can each be actuated via at least one control valve, and the control valves can be controlled independently of one another. A processing unit, by which the control valves can be controlled or regulated, an operating circuit, via which the braking circuits can be controlled or regulated manually, and at least one pressure supply are provided, and the control valves can be controlled or regulated under predetermined conditions by the processing unit.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: October 11, 2016
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Bernhard Meitinger, Johannes Lang
  • Patent number: 9279230
    Abstract: The present disclosure relates to an implement with a boom, wherein the boom is pivotally mounted about a horizontal axis via a bolt connection on a basic unit of the implement, with the bearing of the boom on the basic unit being effected via three bearing plates with corresponding bearing points for the bolt connection.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: March 8, 2016
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Bernd Wager, Stefan Schott
  • Patent number: 9163385
    Abstract: The present invention relates to a working device having an element movable via at least one working cylinder, with at least one energy recovery cylinder being provided for recovering energy from the movement of the movable element and having a chamber filled with gas. In this respect, the chamber filled with gas is in operative communication with a pressure store which counters a pressure increase in the chamber filled with gas at least from a maximum pressure onward.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: October 20, 2015
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Hans-Peter Lavergne, Philipp Egenrieder
  • Patent number: 9127736
    Abstract: The present invention relates to a working device having an element movable via at least one working drive, with at least one energy recovery cylinder being provided for recovering energy from the movement of the movable element and having a chamber filled with gas. In this respect, the energy recovery cylinder has a sealing arrangement for sealing the chamber filled with gas which includes an annular space filled with oil.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: September 8, 2015
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventor: Hans-Peter Lavergne
  • Patent number: 8938956
    Abstract: The present invention relates to an implement, in particular an excavator or machine for material handling, with an element movable via at least one working drive, wherein at least one energy recovery cylinder is provided for energy recovery from the movement of the movable element, which includes a chamber filled with gas, wherein the actuation of the implement is effected in dependence on the directly or indirectly determined temperature of the gas in the chamber filled with gas.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: January 27, 2015
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Dirk Asam, Jochen Fehse
  • Publication number: 20140305117
    Abstract: The invention relates to a power cylinder comprising a piston-in-cylinder unit having at least one pressure connection, an integral valve arrangement for controlling the pressure volume flow from the pressure connection into the cylinder space and an integrated control and/or regulation unit for actuating the valve arrangement.
    Type: Application
    Filed: April 10, 2014
    Publication date: October 16, 2014
    Applicant: Liebherr-Hydraulikbagger GmbH
    Inventor: Roman Hofmann
  • Publication number: 20140241841
    Abstract: A construction machine, such as an excavator, a loader, or a crane, has at least one hydraulic attachment, such as an arm of the excavator, the loader, or the crane. The attachment includes at least one pivot bearing, a separator plate provided at the pivot bearing, at least one first hydraulic line, and at least one second hydraulic line, with the separator plate connectable to the pivot bearing and the hydraulic lines.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicant: Liebherr-Hydraulikbagger GmbH
    Inventors: Daniel VELOSO, Stefan SCHOTT, Michael REUTHLINGER, Dirk ASAM
  • Publication number: 20140116039
    Abstract: The present disclosure relates to an apparatus for controlling/regulating the travel speed of a utility vehicle comprising at least one drive motor, at least one hydraulic pump, at least one control slide valve, at least one hydraulic travel motor, at least one further hydraulic drive, as well as at least one controller. In accordance with the present disclosure, the travel speed of the at least one hydraulic travel motor is controlled/regulated via at least the speed of the drive motor, while the at least one further hydraulic drive does not provide any drive power.
    Type: Application
    Filed: October 22, 2013
    Publication date: May 1, 2014
    Applicant: Liebherr-Hydraulikbagger GmbH
    Inventors: Johannes Lang, Bernhard Meitinger