Patents by Inventor Dirk Asam
Dirk Asam 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).
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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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Publication number: 20210301497Abstract: 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: ApplicationFiled: March 12, 2021Publication date: September 30, 2021Inventors: Daniel BAYER, Dirk ASAM
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Publication number: 20180163370Abstract: 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: ApplicationFiled: December 8, 2017Publication date: June 14, 2018Inventors: Bernd WAGER, Dirk ASAM
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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: 9593465Abstract: The present invention relates to 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. The energy recovery cylinder is equipped with a heat exchanger.Type: GrantFiled: November 16, 2011Date of Patent: March 14, 2017Assignee: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Hans-Peter Lavergne, Philipp Egenrieder, Dirk Asam
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Patent number: 8938956Abstract: 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: GrantFiled: November 17, 2011Date of Patent: January 27, 2015Assignee: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Jochen Fehse
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Publication number: 20140241841Abstract: 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: ApplicationFiled: February 27, 2014Publication date: August 28, 2014Applicant: Liebherr-Hydraulikbagger GmbHInventors: Daniel VELOSO, Stefan SCHOTT, Michael REUTHLINGER, Dirk ASAM
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Patent number: 8418451Abstract: The present invention relates to a piece of working equipment, in particular to an excavator or to a machine for the transfer of material, having an element movable via at least one working hydraulic cylinder, wherein at least one energy recovery hydraulic cylinder is provided for the recovery of energy from the movement of the movable element. In accordance with the invention, the energy recovery hydraulic cylinder is filled with gas at the bottom side and has a hollow piston rod.Type: GrantFiled: July 24, 2009Date of Patent: April 16, 2013Assignee: Liebherr-Hydraulikbagger GmbHInventors: Sebastian Stanger, Bernd Wager, Dirk Asam, Hans-Peter Lavergne
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Publication number: 20120297762Abstract: 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: ApplicationFiled: November 17, 2011Publication date: November 29, 2012Applicant: Liebherr-Hydraulikbagger GmbHInventors: Hans-Peter Lavergne, Philipp Egenrieder, Dirk Asam, Jochen Fehse
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Publication number: 20120291429Abstract: The present invention relates to 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. The energy recovery cylinder is equipped with a heat exchanger.Type: ApplicationFiled: November 16, 2011Publication date: November 22, 2012Applicant: Liebherr-Hydraulikbagger GmbHInventors: Hans-Peter Lavergne, Philipp Egenrieder, Dirk Asam
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Publication number: 20120291430Abstract: 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: ApplicationFiled: November 17, 2011Publication date: November 22, 2012Applicant: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Jochen Fehse
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Patent number: 8177017Abstract: The present invention relates to a traveling working machine, in particular an excavator, with an undercarriage on which the traveling gear is arranged, and an uppercarriage rotatably arranged on the undercarriage about a vertical axis of rotation. In accordance with the invention, the load-bearing steel construction of the uppercarriage is composed of at least one first and one second element, which are connected with each other via bolts and/or screws.Type: GrantFiled: October 15, 2009Date of Patent: May 15, 2012Assignee: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Robert Foehr, Roland Wachter, Bernd Wager
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Publication number: 20110002765Abstract: This invention relates to a box section made of an upper and lower plate and side plates. The upper and lower plates and the side plates thus form a weldment. According to the invention, provision is made for the interior of the box section to be accessible from the outside through multiple cutouts that are arranged in the longitudinal direction of the excavator boom in the side plates and/or in the upper and/or lower plates.Type: ApplicationFiled: June 21, 2010Publication date: January 6, 2011Applicant: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Thomas Zitterbart
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Patent number: 7703812Abstract: The invention relates to a quick coupling comprising a base plate and a support plate, with the mounting frame being guided movably at the base plate and having means for connection to the support plate. In accordance with the invention, the support plate is moved toward the base plate by means of the mounting frame to close the coupling.Type: GrantFiled: March 30, 2007Date of Patent: April 27, 2010Assignee: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Roland Wachter, Christian Walter
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Publication number: 20100096211Abstract: The present invention relates to a traveling working machine, in particular an excavator, with an undercarriage on which the traveling gear is arranged, and an uppercarriage rotatably arranged on the undercarriage about a vertical axis of rotation. In accordance with the invention, the load-bearing steel construction of the uppercarriage is composed of at least one first and one second element, which are connected with each other via bolts and/or screws.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Applicant: LIEBHERR-HYDRAULIKBAGGER GMBHInventors: Dirk Asam, Robert Foehr, Roland Wachter, Bernd Wager
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Publication number: 20100018195Abstract: The present invention relates to a piece of working equipment, in particular to an excavator or to a machine for the transfer of material, having an element movable via at least one working hydraulic cylinder, wherein at least one energy recovery hydraulic cylinder is provided for the recovery of energy from the movement of the movable element. In accordance with the invention, the energy recovery hydraulic cylinder is filled with gas at the bottom side and has a hollow piston rod.Type: ApplicationFiled: July 24, 2009Publication date: January 28, 2010Applicant: Liebherr-Hydraulikbagger GmBHInventors: Sebastian Stanger, Bernd Wager, Dirk Asam, Hans-Peter Lavergne
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Publication number: 20090071139Abstract: The invention relates to an excavator or to a machine for material transfer comprising an element movable via at least one hydraulic cylinder. In accordance with the invention, one or more hydraulic cylinders are additionally hinged to the element, with the additional hydraulic cylinder(s) being connected to one or more hydraulic accumulators.Type: ApplicationFiled: September 2, 2008Publication date: March 19, 2009Inventors: Dirk Asam, Rolf Mieger, Roland Wachter, Bernd Wager
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Patent number: 7434391Abstract: The invention relates to an excavator or to a machine for material transfer comprising an element movable via at least one hydraulic cylinder. In accordance with the invention, one or more hydraulic cylinders are additionally hinged to the element, with the additional hydraulic cylinder(s) being connected to one or more hydraulic accumulators.Type: GrantFiled: July 6, 2005Date of Patent: October 14, 2008Assignee: Liebherr-Hydraulikbagger GmbHInventors: Dirk Asam, Rolf Mieger, Roland Wachter, Bernd Wager
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Patent number: 7344175Abstract: A multi-scoop grab, having at least one grab scoop (10) with at least one prong, wherein at least one wear element (16, 18, 20) is arranged at the at least one grab scoop (10) such that the main wear regions are covered by the at least one wear element (16, 18, 20) (FIG. 1 ).Type: GrantFiled: March 11, 2005Date of Patent: March 18, 2008Assignee: Liebherr-Hydraulikbagger GmbHInventors: Rolf Mieger, Dirk Asam, Bernd Wager
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Publication number: 20080036199Abstract: The invention relates to a quick coupling comprising a base plate and a support plate, with the mounting frame being guided movably at the base plate and having means for connection to the support plate. In accordance with the invention, the support plate is moved toward the base plate by means of the mounting frame to close the coupling.Type: ApplicationFiled: March 30, 2007Publication date: February 14, 2008Inventors: Dirk Asam, Roland Wachter, Christian Walter