Patents by Inventor Martin Dahm
Martin Dahm 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: 11879216Abstract: A paver, in particular a slipform paver, has a machine frame supported by front and rear undercarriages and a paving device for the paving of material. The paver is provided with an apron monitoring device for generating elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device in a direction transverse to the working direction. A data or signal processing device receives the elevation profile data or signals. The apron monitoring device provides the data needed to allow the material to be spread more evenly across the working width of the paver during the feeding operation by means of a spreading device for spreading the material to be paved in a direction transverse to the working direction and/or to allow the spreading device to be controlled for improved spreading of the material after the paver has been fed.Type: GrantFiled: February 15, 2023Date of Patent: January 23, 2024Inventors: Jens Brieskorn, Lothar Schwalbach, Stefan Wagner, Bernd Walterscheid, Gunnar Ramseger, Martin Dahm
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Publication number: 20230265620Abstract: The invention relates to a paver, in particular a slipform paver, having a machine frame 1 supported by front and rear undercarriages 2 and 3 and a paving device 6 for the paving of material. The invention relates additionally to a method of operating such a paver. The paver is provided with an apron monitoring device 13 configured to generate elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device 6 in a direction transverse to the working direction X. In addition, the paver has a data or signal processing device 16 receiving the elevation profile data or elevation profile signals.Type: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Inventors: Jens Brieskorn, Lothar Schwalbach, Stefan Wagner, Bernd Walterscheid, Gunnar Ramseger, Martin Dahm
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Patent number: 11585050Abstract: A paver, in particular a slipform paver, has a machine frame supported by front and rear undercarriages and a paving device for the paving of material. The paver is provided with an apron monitoring device for generating elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device in a direction transverse to the working direction. A data or signal processing device receives the elevation profile data or signals. The apron monitoring device provides the data needed to allow the material to be spread more evenly across the working width of the paver during the feeding operation by means of a spreading device for spreading the material to be paved in a direction transverse to the working direction and/or to allow the spreading device to be controlled for improved spreading of the material after the paver has been fed.Type: GrantFiled: February 21, 2020Date of Patent: February 21, 2023Inventors: Jens Brieskorn, Lothar Schwalbach, Stefan Wagner, Bernd Walterscheid, Gunnar Ramseger, Martin Dahm
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Patent number: 11525224Abstract: A device is provided for monitoring the compaction of concrete introduced into a slipform of a slipform paver by means of at least one concrete compacting device that has an asynchronous motor for driving an unbalanced mass which generates vibrations. The monitoring device comprises an apparatus for monitoring the stator current of the asynchronous motor, the apparatus being configured such that a change in the compaction of the concrete is determined based on an analysis of the stator current. The apparatus for monitoring the stator current of the asynchronous motor is preferably configured such that the amplitude spectrum of the stator current is determined in order to analyse the stator current. It is advantageous that the compaction of the concrete is not monitored using sensors which are exposed to harsh ambient conditions during operation of the slipform paver.Type: GrantFiled: September 23, 2020Date of Patent: December 13, 2022Inventors: Adrian Müller, Martin Dahm
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Publication number: 20210087758Abstract: A device is provided for monitoring the compaction of concrete introduced into a slipform of a slipform paver by means of at least one concrete compacting device that has an asynchronous motor for driving an unbalanced mass which generates vibrations. The monitoring device comprises an apparatus for monitoring the stator current of the asynchronous motor, the apparatus being configured such that a change in the compaction of the concrete is determined based on an analysis of the stator current. The apparatus for monitoring the stator current of the asynchronous motor is preferably configured such that the amplitude spectrum of the stator current is determined in order to analyse the stator current. It is advantageous that the compaction of the concrete is not monitored using sensors which are exposed to harsh ambient conditions during operation of the slipform paver.Type: ApplicationFiled: September 23, 2020Publication date: March 25, 2021Inventors: Adrian Müller, Martin Dahm
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Publication number: 20200270823Abstract: The invention relates to a paver, in particular a slipform paver, having a machine frame 1 supported by front and rear undercarriages 2 and 3 and a paving device 6 for the paving of material. The invention relates additionally to a method of operating such a paver. The paver is provided with an apron monitoring device 13 configured to generate elevation profile data or elevation profile signals describing the elevation profile of the material deposited in the apron of the paving device 6 in a direction transverse to the working direction X. In addition, the paver has a data or signal processing device 16 receiving the elevation profile data or elevation profile signals.Type: ApplicationFiled: February 21, 2020Publication date: August 27, 2020Inventors: Jens Brieskorn, Lothar Schwalbach, Stefan Wagner, Bernd Walterscheid, Gunnar Ramseger, Martin Dahm
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Patent number: 10704209Abstract: A slipform paver comprises a machine frame carried by rolling assemblies, at least two of which being drivable and at least one being steerable, as well as comprising a support arranged on the machine frame for a slipform mould and a controller for controlling the rolling assemblies to adjust the velocities of the drivable rolling assemblies and the steering angles of the one or more steerable rolling assemblies. The controller is configured such that, when the steering angles of the one or more steerable rolling assemblies change, the velocities of the drivable rolling assemblies are adjusted so as to reduce the change in the velocity at which a reference point referring to the support for the slipform mould will move along a predefined trajectory, said change in velocity being caused by changing the steering angle. The quality of the concrete profile produced by the slipform paver is thereby improved.Type: GrantFiled: February 28, 2019Date of Patent: July 7, 2020Assignee: Wirtgen GmbHInventors: Martin Dahm, Matthias Fritz, Cyrus Barimani
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Patent number: 10496106Abstract: A self-propelled paving machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. The machine may be re-oriented from a paving mode to a transport mode by driving the ground engaging units to rotate the frame substantially in place on the ground through a re-orientation angle of the frame relative to the ground, and as the frame is rotating, pivoting one or more of the swing legs from a paving position relative to the frame, to a transport position relative to the frame.Type: GrantFiled: June 13, 2017Date of Patent: December 3, 2019Assignee: Wirtgen GmbHInventors: Martin Dahm, Christian Liss, Martin Lenz, Benjamin Pock
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Publication number: 20190276992Abstract: The invention relates to a slipform paver and a method for operating a slipform paver. The slipform paver 1 according to the invention comprises a machine frame 3 carried by rolling assemblies 7, 8, 10, 11, at least two of said rolling assemblies being drivable and at least one rolling assembly being steerable, as well as comprising a support 17 arranged on the machine frame 3 for a slipform mould 18 and a control unit 21 for controlling the rolling assemblies so as to adjust the velocities of the drivable rolling assemblies and the steering angle of the one steerable rolling assembly, or the steering angles of the steerable rolling assemblies.Type: ApplicationFiled: February 28, 2019Publication date: September 12, 2019Inventors: Martin Dahm, Matthias Fritz, Cyrus Barimani
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Patent number: 10221528Abstract: A self-propelled construction machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. Pivotal movement of a swing leg may be accomplished by steering the associated crawler track through a non-zero steering angle until the lateral movement of the crawler track achieves the desired pivoting movement of the associated swing leg.Type: GrantFiled: May 24, 2017Date of Patent: March 5, 2019Assignee: Wirtgen GmbHInventors: Martin Dahm, Ralf Schug, Cyrus Barimani
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Publication number: 20180073202Abstract: A self-propelled construction machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. Pivotal movement of a swing leg may be accomplished by steering the associated crawler track through a non-zero steering angle until the lateral movement of the crawler track achieves the desired pivoting movement of the associated swing leg.Type: ApplicationFiled: May 24, 2017Publication date: March 15, 2018Inventors: Martin Dahm, Ralf Schug, Cyrus Barimani
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Patent number: 9873991Abstract: A slipform paving machine includes a laser source for generating a laser reference plane. At least two laser receivers are mounted on the machine and intersect the laser reference plane. Inputs from the laser receivers are utilized to control distortion of the frame of the slipform paver machine.Type: GrantFiled: April 19, 2017Date of Patent: January 23, 2018Assignee: Wirtgen GmbHInventors: Matthias Fritz, Martin Dahm, Martin Lenz
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Publication number: 20170344027Abstract: A self-propelled paving machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. The machine may be re-oriented from a paving mode to a transport mode by driving the ground engaging units to rotate the frame substantially in place on the ground through a re-orientation angle of the frame relative to the ground, and as the frame is rotating, pivoting one or more of the swing legs from a paving position relative to the frame, to a transport position relative to the frame.Type: ApplicationFiled: June 13, 2017Publication date: November 30, 2017Inventors: Martin Dahm, Christian Liss, Martin Lenz, Benjamin Pock
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Publication number: 20170341649Abstract: A civil engineering machine and a method of controlling the machine are based on the position of at least one reference point which is relevant to the control of the civil engineering machine being changed, as the civil engineering machine moves, as a function of a relative position of the at least one reference point relative to a desired path of travel.Type: ApplicationFiled: March 14, 2017Publication date: November 30, 2017Inventors: Matthias Fritz, Martin Dahm, Cyrus Barimani
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Publication number: 20170284037Abstract: A slipform paving machine includes a laser source for generating a laser reference plane. At least two laser receivers are mounted on the machine and intersect the laser reference plane. Inputs from the laser receivers are utilized to control distortion of the frame of the slipform paver machine.Type: ApplicationFiled: April 19, 2017Publication date: October 5, 2017Inventors: Matthias Fritz, Martin Dahm, Martin Lenz
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Patent number: 9689119Abstract: A self-propelled construction machine includes machine frame that is laterally extendible to adjust a width of the machine frame. A frame lock can selectively lock and unlock the machine frame to permit the width adjustment. A controller includes a frame extension mode configured to steer at least one ground engaging unit to provide a lateral force to adjust the width of the machine frame as the machine is driven across the ground surface by the ground engaging units.Type: GrantFiled: July 7, 2016Date of Patent: June 27, 2017Assignee: Wirtgen GmbHInventors: Martin Dahm, Ralf Schug, Cyrus Barimani
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Patent number: 9684308Abstract: A self-propelled paving machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. The machine may be re-oriented from a paving mode to a transport mode by driving the ground engaging units to rotate the frame substantially in place on the ground through a re-orientation angle of the frame relative to the ground, and as the frame is rotating, pivoting one or more of the swing legs from a paving position relative to the frame, to a transport position relative to the frame.Type: GrantFiled: November 13, 2014Date of Patent: June 20, 2017Assignee: Wirtgen GmbHInventors: Martin Dahm, Christian Liss, Martin Lenz, Benjamin Pock
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Patent number: 9663905Abstract: A self-propelled construction machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. Pivotal movement of a swing leg may be accomplished by steering the associated crawler track through a non-zero steering angle until the lateral movement of the crawler track achieves the desired pivoting movement of the associated swing leg.Type: GrantFiled: July 7, 2016Date of Patent: May 30, 2017Assignee: Wirtgen GmbHInventors: Martin Dahm, Ralf Schug, Cyrus Barimani, Günter Hähn
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Patent number: 9663906Abstract: Methods of and apparatus for controlling relative telescoping extension or retraction of multiple telescoping assemblies is provided. The telescoping assemblies connect the main frame of a slipform paver to a side member of the slipform paver. Each telescoping assembly has a telescopic lock associated with the telescoping assembly. A common telescoping force is applied across the telescoping assemblies to widen or narrow the frame width of the slipform paver. Extension of the telescoping assemblies is monitored, and activation of the telescopic locks is controlled so as to determine which of the telescoping assemblies is allowed to telescope under application of the common telescoping force.Type: GrantFiled: July 7, 2016Date of Patent: May 30, 2017Assignee: Wirtgen GmbHInventors: Martin Dahm, Ralf Schug, Cyrus Barimani
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Patent number: 9631329Abstract: A slipform paving machine includes a laser source for generating a laser reference plane. At least two laser receivers are mounted on the machine and intersect the laser reference plane. Inputs from the laser receivers are utilized to control distortion of the frame of the slipform paver machine.Type: GrantFiled: December 19, 2014Date of Patent: April 25, 2017Assignee: Wirtgen GmbHInventors: Matthias Fritz, Martin Dahm, Martin Lenz