Patents Assigned to Liebherr-Hydraulikbagger GmbH
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Patent number: 12188585Abstract: The present invention relates to a device for transferring exhaust gas between a front and rear carriage of a mobile working machine, in particular a dump truck, separated by an articulated pivot joint, which working machine has a pipe section, which is variable in it length, for conducting exhaust gas, a first flexible hose cooperating with a first end portion of the pipe section for introducing exhaust gas into the pipe section, and a second flexible hose cooperating with a second end portion of the pipe section for discharging exhaust gas from the pipe section. The device is characterized in that a first cardan shaft is provided in the first end portion, the distal end of which is configured to be rigidly attached to a fastening section of the front carriage or the rear carriage of the working machine, and a second cardan shaft is provided in the second end region.Type: GrantFiled: October 10, 2023Date of Patent: January 7, 2025Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Thomas Locher, Fabian Göggel
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Patent number: 12012314Abstract: 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: GrantFiled: November 4, 2020Date of Patent: June 18, 2024Assignee: Liebherr-Hydraulikbagger GmbHInventors: Sebastian Rauh, Tobias Riedmiller, Sebastian Stanger, Bernd Wager, Constantin Wegmann
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Patent number: 11970836Abstract: 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: GrantFiled: March 12, 2021Date of Patent: April 30, 2024Assignee: Liebherr-Hydraulikbagger GmbHInventors: Daniel Bayer, Dirk Asam
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Patent number: 11970833Abstract: The invention relates to a quick coupling for coupling a tool to the boom of a working machines, comprising a quick coupling part at the boom side and a quick coupling part at the tool side that are latchable to one another via two spaced apart latching axles and an energy circuit coupling for the automatic coupling of an energy connector at the tool side and an energy connector at the boom side that comprises an energy coupling part at the boom side and an energy coupling part at the tool side that move toward one another by pivoting together about a first latching axle on an orbit and thereby automatically couple with one another. At least one of the energy coupling parts is movably supported. The energy circuit coupling comprises a linear guide that compensates the circular relative movement of the energy coupling parts on the pivoting together and guides them linearly toward one another.Type: GrantFiled: April 16, 2021Date of Patent: April 30, 2024Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Thomas Zitterbart, Robert Grau
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Patent number: 11965318Abstract: The invention relates to a method and a system for determining process data of a work process carried out by an implement based on the determination of a moved mass by a weighing system of the implement and the detection of a parameter concerning a state of the implement and/or a work step, wherein with reference to these and further data a prediction value concerning the remaining part of the current work process is determined and on the basis of which information on the assistance is indicated to the operator of the implement, and to an implement comprising such a system.Type: GrantFiled: June 4, 2021Date of Patent: April 23, 2024Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Ferdinand Hofmann, Anton Renner, Oliver Sawodny, Hannes Wind
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Patent number: 11261580Abstract: 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: GrantFiled: February 4, 2019Date of Patent: March 1, 2022Assignee: Liebherr-Hydraulikbagger GmbHInventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
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Patent number: 11242670Abstract: The present disclosure relates to a work machine, in particular to a hydraulic excavator, having at least one ballast device, wherein the ballast device comprises at least one ballast weight and at least one ballast support. The present disclosure is furthermore directed to a ballast weight for a corresponding work machine.Type: GrantFiled: December 8, 2017Date of Patent: February 8, 2022Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Bernd Wager, Dirk Asam
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Patent number: 11072908Abstract: The invention relates to a work machine having an operator's cabin comprising at least one window or screen.Type: GrantFiled: July 25, 2018Date of Patent: July 27, 2021Assignee: Liebherr-Hydraulikbagger GmbHInventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
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Patent number: 10996667Abstract: 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: GrantFiled: December 20, 2018Date of Patent: May 4, 2021Assignee: Liebherr-Hydraulikbagger GmbHInventors: Gerhard Bolz, Dieter Ansorge, Florian Mang
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Patent number: 10927867Abstract: The present invention relates to a work machine having at least one hydraulic actuator for actuating a piece of working equipment and having a first displacement unit that is driven by a drive assembly of the work machine and that feeds the hydraulic actuator with hydraulic medium from a hydraulic tank, wherein at least one second displacement unit is provided that is driven by the drive assembly and that feeds the hydraulic actuator and/or further hydraulic consumers with hydraulic medium from a hydraulic tank in the working mode and that is drivable during a recovery mode by the hydraulic volume displaced by the at least one hydraulic actuator or by a hydraulic consumer to feed kinetic energy back to the drive assembly.Type: GrantFiled: January 28, 2019Date of Patent: February 23, 2021Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Bernhard Meitinger, Manuel Wirthensohn
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Patent number: 10919514Abstract: 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: GrantFiled: October 22, 2013Date of Patent: February 16, 2021Assignee: Liebherr-Hydraulikbagger GmbHInventors: Johannes Lang, Bernhard Meitinger
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Patent number: 10894698Abstract: 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: GrantFiled: December 13, 2017Date of Patent: January 19, 2021Assignee: Liebherr-Hydraulikbagger GmbHInventors: Stephan Henkel, Phillip Altvater
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Patent number: 10883254Abstract: 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: GrantFiled: July 25, 2018Date of Patent: January 5, 2021Assignee: Liebherr-Hydraulikbagger GmbHInventors: Gerhard Bolz, Florian Mang, Dieter Ansorge
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Patent number: 10773629Abstract: 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: GrantFiled: June 4, 2018Date of Patent: September 15, 2020Assignee: Liebherr-Hydraulikbagger GmbHInventors: Bernhard Meitinger, Volker Hilsenbeck
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Patent number: 10214873Abstract: 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: GrantFiled: December 7, 2016Date of Patent: February 26, 2019Assignee: Liebherr-Hydraulikbagger GmbHInventors: Simon Meier, Thomas Zitterbart
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Patent number: 10132057Abstract: 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: GrantFiled: June 16, 2009Date of Patent: November 20, 2018Assignee: Liebherr-Hydraulikbagger GmbHInventor: Simon Meier
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Patent number: 9897115Abstract: 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: GrantFiled: November 29, 2012Date of Patent: February 20, 2018Assignee: Liebherr-Hydraulikbagger GmbHInventor: Simon Meier
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Patent number: 9644344Abstract: The present invention discloses an implement, in particular an excavator or a 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. In accordance with the invention, a device for adjusting the temperature of the energy recovery cylinder is provided.Type: GrantFiled: November 17, 2011Date of Patent: May 9, 2017Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Hans-Peter Lavergne, Philipp Egenrieder, Dirk Asam, Jochen Fehse
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Patent number: D898777Type: GrantFiled: February 26, 2019Date of Patent: October 13, 2020Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventor: Jonas Lorenz
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Patent number: D1050195Type: GrantFiled: February 22, 2023Date of Patent: November 5, 2024Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Jonas Lorenz, Hans Eckert, Stefan Wagner