Patents by Inventor Axel Mahlberg
Axel Mahlberg 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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Publication number: 20220314785Abstract: A self-propelled earth working machine includes a traveling gear, a machine frame supported by the traveling gear, a power source accommodated on the machine frame for providing power for a travel operation and/or for an earth working operation, a working apparatus accommodated on the machine frame for earth working, and a cooling device for cooling a functional device of the earth working machine. The cooling device includes at least one heat exchanger system for transferring heat from a cooling medium to air, and a ventilator system, which is on the one hand designed and situated to produce a cooling air flow passing the heat exchanger system and which is on the other hand designed and situated to produce in the area of the power source a ventilation air flow flowing away from the power source.Type: ApplicationFiled: March 21, 2022Publication date: October 6, 2022Inventors: Tobias Stinner, Viktor Stremel, Axel Mahlberg, Rolf David Pancho Yanza
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Patent number: 11346065Abstract: A self-propelled construction machine comprises a machine frame, at least three travelling devices, at least one hydraulic drive system for driving at least two travelling devices, wherein the hydraulic drive system comprises at least one controllable hydraulic motor with variable displacement volume and at least one hydraulic pump, at least one working device (e.g. a milling drum), for working the ground pavement. A detection device detects fluctuations in the longitudinal speed of the construction machine during movement thereof, wherein a control unit alters the displacement volume of the at least one controllable hydraulic motor as a function of the detected fluctuations so that the natural frequency of the hydraulic drive system is altered, wherein the control unit adjusts the discharge volume of the pump as a function of the amount of adjustment of the displacement volume in such a fashion that the specified drive speed remains constant.Type: GrantFiled: June 10, 2020Date of Patent: May 31, 2022Inventors: Stefan Wagner, Markus Bach, Axel Mahlberg, Markus Schäfer, Eduard Fitz
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Patent number: 11274401Abstract: An earth working machine (10), in particular a road milling machine, a stabilizer, or the like, having a milling drum (30) that is mounted rotatably on a machine frame (11) and is populated or populatable on its outer circumference with working tools (31); the working tools (31) to come into contact, during working operation, with the ground that is to be worked to remove it; a drive unit (20) drives the milling drum (30) by means of a drive motor (21); an input drive shaft (33) couplable to the drive motor (21) is attached to the milling drum (30); and a ballast element, constituting a kinetic mass (57), increases the kinetic energy of the milling drum (30). The kinetic mass (57) is couplable to or decouplable from the rotatable milling drum (30), or a rotational member indirectly or directly coupled to the milling drum (30), via a shiftable coupling (55).Type: GrantFiled: March 20, 2020Date of Patent: March 15, 2022Inventors: Sebastian Bötzius, Axel Mahlberg, Stefan Scheer, Björn Buchholz
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Patent number: 10968576Abstract: In a self-propelled construction machine (1), in particular road milling machine, recycler, stabilizer or surface miner, comprising a machine frame (4), at least two travelling devices (2), at least one hydraulic drive system (50) for driving at least two travelling devices (2), at least one working device, in particular a milling drum (6), for working the ground pavement (3), it is provided for the following features to be achieved: a detection device (44, 60, 62) is provided which detects fluctuations in the longitudinal speed (vact) of the construction machine (1) during movement of the construction machine (1), wherein a control unit (38) controls the hydraulic drive system (50) as a function of the detected fluctuations in such a fashion that the drive speed (vdrive) for driving the travelling devices (2) specified by means of the hydraulic drive system (50) is continuously adjusted so that the detected fluctuations are reduced or compensated for.Type: GrantFiled: May 30, 2019Date of Patent: April 6, 2021Inventors: Stefan Wagner, Markus Bach, Christian Berning, Axel Mahlberg
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Publication number: 20210016661Abstract: A self-propelled construction machine comprises a machine frame, at least three travelling devices, at least one hydraulic drive system for driving at least two travelling devices, wherein the hydraulic drive system comprises at least one controllable hydraulic motor with variable displacement volume and at least one hydraulic pump, at least one working device (e.g. a milling drum), for working the ground pavement. A detection device detects fluctuations in the longitudinal speed of the construction machine during movement thereof, wherein a control unit alters the displacement volume of the at least one controllable hydraulic motor as a function of the detected fluctuations so that the natural frequency of the hydraulic drive system is altered, wherein the control unit adjusts the discharge volume of the pump as a function of the amount of adjustment of the displacement volume in such a fashion that the specified drive speed remains constant.Type: ApplicationFiled: June 10, 2020Publication date: January 21, 2021Inventors: Stefan Wagner, Markus Bach, Axel Mahlberg, Markus Schäfer, Eduard Fitz
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Publication number: 20200318297Abstract: The invention relates to an earth working machine (10), in particular a road milling machine, a stabilizer, or the like, having a milling drum (30) that is mounted rotatably on a machine frame (11) and is populated or populatable on its outer circumference with working tools (31); the working tools (31) being provided so as to come into contact, during working operation, with the ground that is to be worked in order to remove it; a drive unit (20) being provided which drives the milling drum (30) by means of a drive motor (21); an input drive shaft (33) that is couplable to the drive motor (21) being attached to the milling drum (30); and a ballast element, constituting a kinetic mass (57), being provided in order to increase the kinetic energy of the milling drum (30).Type: ApplicationFiled: March 20, 2020Publication date: October 8, 2020Inventors: Sebastian Bötzius, Axel Mahlberg, Stefan Scheer, Björn Buchholz
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Patent number: 10774482Abstract: The invention relates to a working device for a ground-processing device having a milling drum with a milling drum tube on whose surface working tools are mounted in a projecting manner and are intended to come into contact with the material to be milled during the milling process, wherein the working device has a powertrain for driving the milling drum. In order to improve the running smoothness of a ground-processing machine, provision is made according to the invention for at least one load weight to be arranged, preferably interchangeably, on the powertrain and/or on the milling drum to increase the kinetic energy.Type: GrantFiled: November 30, 2015Date of Patent: September 15, 2020Assignee: Wirtgen GmbHInventors: Axel Mahlberg, Klaus Vollmann, Sebastian Bötzius, Cyrus Barimani
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Publication number: 20190390417Abstract: In a self-propelled construction machine (1), in particular road milling machine, recycler, stabilizer or surface miner, comprising a machine frame (4), at least two travelling devices (2), at least one hydraulic drive system (50) for driving at least two travelling devices (2), at least one working device, in particular a milling drum (6), for working the ground pavement (3), it is provided for the following features to be achieved: a detection device (44, 60, 62) is provided which detects fluctuations in the longitudinal speed (vact) of the construction machine (1) during movement of the construction machine (1), wherein a control unit (38) controls the hydraulic drive system (50) as a function of the detected fluctuations in such a fashion that the drive speed (vdrive) for driving the travelling devices (2) specified by means of the hydraulic drive system (50) is continuously adjusted so that the detected fluctuations are reduced or compensated for.Type: ApplicationFiled: May 30, 2019Publication date: December 26, 2019Inventors: Stefan Wagner, Markus Bach, Christian Berning, Axel Mahlberg
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Patent number: 10024005Abstract: In a self-propelled road milling machine for working road surfaces, comprising a machine frame, comprising a milling drum mounted to rotate and extending in axial direction transverse to the direction of travel, and a milling drum housing enclosing the milling drum, where the milling drum comprises multiple tools circumferentially preferably arranged in the shape of a helix, where the tools, except for the axial peripheral area, feature a specified mutual line spacing, it is provided for the following features to be achieved: an oscillation drive exercises an oscillation stroke on the axis of the milling drum moving to and fro in axial direction relative to the machine frame, where the rotating movement of the tools is superimposable with an axial movement parallel to the axis of the milling drum, the stroke of which is adjustable to the line spacing between two axially neighboring tools.Type: GrantFiled: December 18, 2015Date of Patent: July 17, 2018Assignee: Wirtgen GmbHInventors: Axel Mahlberg, Cyrus Barimani, Sebastian Boetzius
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Publication number: 20160186392Abstract: In a self-propelled road milling machine for working road surfaces, comprising a machine frame, comprising a milling drum mounted to rotate and extending in axial direction transverse to the direction of travel, and a milling drum housing enclosing the milling drum, where the milling drum comprises multiple tools circumferentially preferably arranged in the shape of a helix, where the tools, except for the axial peripheral area, feature a specified mutual line spacing, it is provided for the following features to be achieved: an oscillation drive exercises an oscillation stroke on the axis of the milling drum moving to and fro in axial direction relative to the machine frame, where the rotating movement of the tools is superimposable with an axial movement parallel to the axis of the milling drum, the stroke of which is adjustable to the line spacing between two axially neighbouring tools.Type: ApplicationFiled: December 18, 2015Publication date: June 30, 2016Inventors: Axel Mahlberg, Cyrus Barimani, Günter Hähn, Sebastian Boetzius
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Publication number: 20160177520Abstract: The invention relates to a working device for a ground-processing device having a milling drum with a milling drum tube on whose surface working tools are mounted in a projecting manner and are intended to come into contact with the material to be milled during the milling process, wherein the working device has a powertrain for driving the milling drum. In order to improve the running smoothness of a ground-processing machine, provision is made according to the invention for at least one load weight to be arranged, preferably interchangeably, on the powertrain and/or on the milling drum to increase the kinetic energy.Type: ApplicationFiled: November 30, 2015Publication date: June 23, 2016Inventors: Axel Mahlberg, Klaus Vollmann, Sebastian Bötzius, Cyrus Barimani, Günter Hähn
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Patent number: 8632132Abstract: A control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the rate of feeding the milling drum into the ground surface.Type: GrantFiled: September 12, 2012Date of Patent: January 21, 2014Assignee: Wirtgen GmbHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Günter Hähn
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Patent number: 8376653Abstract: In an automotive road construction machine (1), with a working drum (6) for working a ground surface or traffic surface (3) mounted at a machine frame (4), a combustion engine (10) for driving the working drum (6), and a drive train (8) between the combustion engine (10) and the working drum (6), it is provided that at least one vibration damper (5) and/or vibration absorber is arranged at the working drum (6) or in the drive train (8) downstream of the combustion engine (10), with the said vibration damper (5) and/or vibration absorber eliminating or reducing rotary vibrations generated by the combustion engine (10).Type: GrantFiled: April 23, 2007Date of Patent: February 19, 2013Assignee: Wirtgen GmbHInventors: Axel Mahlberg, Lothar Schwalbach, Günter Hähn
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Publication number: 20130002002Abstract: A control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the rate of feeding the milling drum into the ground surface.Type: ApplicationFiled: September 12, 2012Publication date: January 3, 2013Applicant: WIRTGEN GMBHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Gunter Hahn
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Patent number: 8292371Abstract: An adaptive advance control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the rate of lowering the milling drum into the ground surface. Early and rapid detection of such changes in reaction forces allow the control system to aid in preventing lurch forward events of the construction machine.Type: GrantFiled: February 6, 2012Date of Patent: October 23, 2012Assignee: Wirtgen GmbHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Gunter Hahn
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Patent number: 8261898Abstract: Construction machine, with working drum mounted at a machine frame, combustion engine for driving the working drum, drive train between the combustion engine and the working drum, and clutch in the drive train, where the clutch is arranged between a drive shaft and output shaft of the drive train, clutch elements on drive side capable of being engaged with clutch elements on output side, where clutch elements on the drive side or on output side are provided with several clutch part elements that are permanently engaged with one another via at least one mechanical coupling, it is provided that a braking device acting between the drive shaft and the output shaft is arranged at the clutch, said braking device being additionally engaged during engagement of the clutch in order to eliminate or reduce any rotary vibrations caused by play of mechanical coupling between clutch part elements.Type: GrantFiled: July 13, 2011Date of Patent: September 11, 2012Assignee: Wirtgen GmbHInventors: Axel Mahlberg, Lothar Schwalbach, Günter Hähn
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Publication number: 20120200138Abstract: An adaptive advance control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the rate of lowering the milling drum into the ground surface. Early and rapid detection of such changes in reaction forces allow the control system to aid in preventing lurch forward events of the construction machine.Type: ApplicationFiled: February 6, 2012Publication date: August 9, 2012Applicant: WIRTGEN GMBHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Gunter Hahn
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Patent number: 8128177Abstract: An adaptive advance control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the motive power applied to an advance drive of the machine. Early and rapid detection of such changes in reaction forces allow the control system to aid in preventing lurch forward events of the construction machine.Type: GrantFiled: February 8, 2010Date of Patent: March 6, 2012Assignee: Wirtgen GmbHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Gunter Hahn
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Publication number: 20110290614Abstract: Construction machine, with working drum mounted at a machine frame, combustion engine for driving the working drum, drive train between the combustion engine and the working drum, and clutch in the drive train, where the clutch is arranged between a drive shaft and output shaft of the drive train, clutch elements on drive side capable of being engaged with clutch elements on output side, where clutch elements on the drive side or on output side are provided with several clutch part elements that are permanently engaged with one another via at least one mechanical coupling, it is provided that a braking device acting between the drive shaft and the output shaft is arranged at the clutch, said braking device being additionally engaged during engagement of the clutch in order to eliminate or reduce any rotary vibrations caused by play of mechanical coupling between clutch part elements.Type: ApplicationFiled: July 13, 2011Publication date: December 1, 2011Applicant: WIRTGEN GMBHInventors: Axel Mahlberg, Lothar Schwalbach, Günter Hähn
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Publication number: 20110193397Abstract: An adaptive advance control system for a construction machine senses the reaction forces applied by the ground surface to a milling drum, and in response to the sensed changes in those reaction forces controls the motive power applied to an advance drive of the machine. Early and rapid detection of such changes in reaction forces allow the control system to aid in preventing lurch forward events of the construction machine.Type: ApplicationFiled: February 8, 2010Publication date: August 11, 2011Applicant: WIRTGEN GMBHInventors: Christoph Menzenbach, Axel Mahlberg, Herbert Lange, Cyrus Barimani, Gunter Hahn