Patents by Inventor Matthias KRAM
Matthias KRAM 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: 11946521Abstract: A stop assembly for damper masses of a damper system has a stop device and a stop device carrier which holds the stop device. The stop device has at least one shoulder, which is intended to engage in at least one associated receiving portion of the stop device carrier. In at least one support region, the shoulder is oversized relative to the associated receiving portion to facilitate captive engagement in the receiving portion, and, at a distance from the at least one support region, the shoulder is undersized relative to the associated receiving portion to facilitate assembly-simplifying engagement in the receiving portion.Type: GrantFiled: May 8, 2020Date of Patent: April 2, 2024Assignee: ZF Friedrichshafen AGInventors: Jörg Bender, Michael Wirachowski, Matthias Kram, Kyrill Siemens, Volker Stampf, Reinhold Fischer
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Publication number: 20230417304Abstract: A torque transmission device including a speed-adaptive vibration absorber having an absorber mass that is arranged inside a housing, which is at least partially filled with a working medium. The vibration absorber is designed to compensate for vibration angle-independent and vibration angle-dependent damping effects by the working medium in the operating state.Type: ApplicationFiled: November 5, 2021Publication date: December 28, 2023Inventors: Matthias KRAM, Mathias KOPP, Armin STÜRMER, Andreas ORLAMÜNDER
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Publication number: 20220186813Abstract: A stop assembly for damper masses of a damper system has a stop device and a stop device carrier which holds the stop device. The stop device has at least one shoulder, which is intended to engage in at least one associated receiving portion of the stop device carrier. In at least one support region, the shoulder is oversized relative to the associated receiving portion to facilitate captive engagement in the receiving portion, and, at a distance from the at least one support region, the shoulder is undersized relative to the associated receiving portion to facilitate assembly-simplifying engagement in the receiving portion.Type: ApplicationFiled: May 8, 2020Publication date: June 16, 2022Inventors: Jörg Bender, Michael Wirachowski, Matthias Kram, Kyrill Siemens, Volker Stampf, Reinhold Fischer
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Publication number: 20200309232Abstract: A torque transmission arrangement for a powertrain of a motor vehicle includes an input and an output. A torque path runs from the input to the output. A torsional vibration damping unit is positioned first, followed by a gear unit, along the torque path between the input and the output. A first slip arrangement and/or a second slip arrangement for generating a speed slip are/is provided in the torque path between the input and the output for vibration damping.Type: ApplicationFiled: May 29, 2017Publication date: October 1, 2020Inventors: Tobias HÖCHE, Tobias DIECKHOFF, Daniel LORENZ, Andreas ORLAMÜNDER, Ingrid HOFFELNER, Wolfgang GROSSPIETSCH, Steffen MATSCHAS, Johannes FRIESS, Christofer EBERT, Matthias KRAM, Dennis EGLER, Axel ROHM, Erwin WACK, Bernd UNSELD, Thomas DOGEL, Matthias REISCH
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Patent number: 10704620Abstract: A method for transmission of and damping of a mean torque with a superposed alternating torque in a torque transmission arrangement for a powertrain of a motor vehicle having an input and an output. The mean torque with the superposed alternating torque is transmitted along a torque path from the input the output. The input rotates at an input speed and the output rotates at an output speed. A slip arrangement is provided in the torque path between the input and the output for generating a speed slip. The slip arrangement provides a maximum of an external activation of the speed slip in the area of a maxima of at least one periodic oscillation component of an alternating component and provides a minimum of an external activation of the speed slip in the area of a minima of at least one periodic oscillation component of the alternating component (new).Type: GrantFiled: May 29, 2017Date of Patent: July 7, 2020Assignee: ZF Friedrichshafen AGInventors: Tobias Höche, Tobias Dieckhoff, Daniel Lorenz, Andreas Orlamünder, Ingrid Hoffelner, Wolfgang Grosspietsch, Steffen Matschas, Johannes Friess, Christofer Ebert, Matthias Kram, Dennis Egler, Axel Rohm, Erwin Wack, Bernd Unseld, Thomas Dögel, Matthias Reisch, Lukas Spath, Angelika Ebert
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Patent number: 10704621Abstract: A method for the transmission and damping of a mean torque with a superposed alternating torque having an input and an output. The mean and superposed alternating torque is transmitted along a torque path from the input to the output area. An input speed is a mean speed and a superposed alternating component. A slip arrangement is provided in the torque path between the input and the output for transmitting the mean and superposed alternating torque and generating a speed slip between an input speed and an output speed. The slip arrangement provides a maximum of an external activation of the speed slip in a area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in an area of the minima of at least one periodic oscillation component of the alternating component.Type: GrantFiled: May 29, 2017Date of Patent: July 7, 2020Assignee: ZF Friedrichshafen AGInventors: Tobias Höche, Tobias Dieckhoff, Daniel Lorenz, Andreas Orlamünder, Ingrid Hoffelner, Wolfgang Grosspietsch, Steffen Matschas, Johannes Friess, Christofer Ebert, Matthias Kram, Dennis Egler, Axel Rohm, Erwin Wack, Bernd Unseld, Thomas Dögel, Matthias Reisch, Lukas Spath, Angelika Ebert
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Patent number: 10704619Abstract: A method for the transmission and damping of a mean torque with a superposed alternating torque in an arrangement having an input and an output. The mean torque and superposed alternating torque are transmitted along a path from the input to the output. A slip arrangement is provided in the torque path between the input and the output for transmitting mean torque and superposed alternating torque and for generating a speed slip between an input speed and an output speed in the path. The slip arrangement provides a maximum of an external activation of the speed slip in the area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in the area of the minima of at least one periodic oscillation component of the alternating component.Type: GrantFiled: May 29, 2017Date of Patent: July 7, 2020Assignee: ZF Friedrichshafen AGInventors: Tobias Höche, Tobias Dieckhoff, Daniel Lorenz, Andreas Orlamünder, Ingrid Hoffelner, Wolfgang Grosspietsch, Steffen Matschas, Johannes Friess, Christofer Ebert, Matthias Kram, Dennis Egler, Axel Rohm, Erwin Wack, Bernd Unseld, Thomas Dögel, Matthias Reisch, Christoph Sasse, Mathais Kopp
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Patent number: 10393223Abstract: A coupling arrangement is provided with a vibration reduction device and with a clutch device. The vibration reduction device has at least one torsional vibration damper, an input connected to a drive, and an output connected to the clutch device by which a connection between the vibration reduction device and a driven end is at least substantially produced in a first operating state, and this connection is at least substantially cancelled in a second operating state. The vibration reduction device has a mass damper system that cooperates with the torsional vibration damper and is connected to the output of the vibration reduction device.Type: GrantFiled: September 15, 2015Date of Patent: August 27, 2019Assignee: ZF Friedrichshafen AGInventors: Martin Hertel, Christian Weber, Joerg Sudau, Thomas Bauer, Michael Winterstein, Michael Wirachowski, Axel Rohm, Oliver Andres, Christian Wickel, Florian Postler, Matthias Kram, Nathalie Werner
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Publication number: 20190219111Abstract: A method for the transmission and damping of a mean torque with a superposed alternating torque in an arrangement having an input and an output. The mean torque and superposed alternating torque are transmitted along a path from the input to the output. A slip arrangement is provided in the torque path between the input and the output for transmitting mean torque and superposed alternating torque and for generating a speed slip between an input speed and an output speed in the path. The slip arrangement provides a maximum of an external activation of the speed slip in the area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in the area of the minima of at least one periodic oscillation component of the alternating component.Type: ApplicationFiled: May 29, 2017Publication date: July 18, 2019Inventors: Tobias HÖCHE, Tobias DIECKHOFF, Daniel LORENZ, Andreas ORLAMÜNDER, Ingrid HOFFELNER, Wolfgang GROSSPIETSCH, Steffen MATSCHAS, Johannes FRIESS, Christofer EBERT, Matthias KRAM, Dennis EGLER, Axel ROHM, Erwin WACK, Bernd UNSELD, Thomas Dögel, Matthias REISCH, Christoph SASSE, Mathais KOPP
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Publication number: 20190195298Abstract: A method for transmission of and damping of a mean torque with a superposed alternating torque in a torque transmission arrangement for a powertrain of a motor vehicle having an input and an output. The mean torque with the superposed alternating torque is transmitted along a torque path from the input the output. The input rotates at an input speed and the output rotates at an output speed. A slip arrangement is provided in the torque path between the input and the output for generating a speed slip. The slip arrangement provides a maximum of an external activation of the speed slip in the area of a maxima of at least one periodic oscillation component of an alternating component and provides a minimum of an external activation of the speed slip in the area of a minima of at least one periodic oscillation component of the alternating component (new).Type: ApplicationFiled: May 29, 2017Publication date: June 27, 2019Applicant: ZF FRIEDRICHSHAFEN AGInventors: Tobias HÖCHE, Tobias DIECKHOFF, Daniel LORENZ, Andreas ORLAMÜNDER, Ingrid HOFFELNER, Wolfgang GROSSPIETSCH, Steffen MATSCHAS, Johannes FRIESS, Christofer EBERT, Matthias KRAM, Dennis EGLER, Axel ROHM, Erwin WACK, Bernd UNSELD, Thomas DÖGEL, Matthias REISCH, Lukas SPATH, Angelika EBERT
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Publication number: 20190162255Abstract: A method for the transmission and damping of a mean torque with a superposed alternating torque having an input and an output. The mean and superposed alternating torque is transmitted along a torque path from the input to the output area. An input speed is a mean speed and a superposed alternating component. A slip arrangement is provided in the torque path between the input and the output for transmitting the mean and superposed alternating torque and generating a speed slip between an input speed and an output speed. The slip arrangement provides a maximum of an external activation of the speed slip in a area of the maxima of at least one periodic oscillation component of the alternating component and provides a minimum of an external activation of the speed slip in an area of the minima of at least one periodic oscillation component of the alternating component.Type: ApplicationFiled: May 29, 2017Publication date: May 30, 2019Applicant: ZF FRIEDRICHSHAFEN AGInventors: Tobias HÖCHE, Tobias DIECKHOFF, Daniel LORENZ, Andreas ORLAMÜNDER, Ingrid HOFFELNER, Wolfgang GROSSPIETSCH, Steffen MATSCHAS, Johannes FRIESS, Christofer EBERT, Matthias KRAM, Dennis EGLER, Axel ROHM, Erwin WACK, Bernd UNSELD, Thomas DÖGEL, Matthias REISCH, Lukas SPATH, Angelika EBERT
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Patent number: 10100898Abstract: A torsional vibration damper has a damper mass carrier at which is received at least one damper mass movable relative to the damper mass carrier and with at least one stop. The at least one damper mass has a stop side with a geometric shaping. At least one stop is associated with the damper mass, and has an axial overlap with the at least one damper mass in extension direction of a central axis and a stop profile at its side facing the stop side of the damper mass. At least one stop receiver is associated with the least one stop for the at least one damper mass. The geometric shaping which is provided at the at least one damper mass has a first contact region operative at least substantially in radial direction and a second contact region operative at least substantially in tangential direction. The first contact region can be brought into operative connection with the stop, and the second contact region can be brought into operative connection with the stop receiver.Type: GrantFiled: September 30, 2013Date of Patent: October 16, 2018Assignee: ZF Friedrichshafen AGInventors: Matthias Kram, Volker Stampf, Jörg Sudau, Christoph Sasse, Armin Stürmer, Michael Wirachowski, Ying Dong, Friedrich Kokott, Daniel Pittner, Oliver Andres, Simone Vierneusel, Dennis Egler
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Patent number: 9797471Abstract: A mass damper system includes a damper mass carrier having movable damper mass and a stop. The damper mass moves within a predetermined movement region during an operating state. A first movement region portion bounded by an initial position in which the damper mass is free from a deflection in circumferential direction and by a limit position in which the damper mass has undergone a deflection, and a second movement region portion defined by the limit position and a stop position in which the damper mass has come in contact with the stop. At a side facing the stop, the damper mass has a proximity profile that correspond to a stop profile such that in the first movement region portion the damper mass remains within a residual distance region relative to the stop in one extension portion of the proximity profile.Type: GrantFiled: July 29, 2014Date of Patent: October 24, 2017Assignee: ZF Friedrichshafen AGInventors: Matthias Kram, Jörg Sudau, Dennis Egler, Volker Stampf, Kyrill Siemens
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Patent number: 9765848Abstract: A vibration damping having a first torsional vibration damper couplable to a drive member with a first secondary side rotatable with respect to the first primary side against a return action of a first damper element arrangement, a second torsional vibration damper with a second primary side connected to the first secondary side and with a second secondary side rotatable with respect to the second primary side against the return action of a second damper element arrangement and couplable to an output member, and a deflection mass pendulum arrangement having at least one deflection mass. The first damper element arrangement has a plurality of first damper element units acting parallel to one another and/or the second damper element arrangement has a plurality of second damper element units acting parallel to one another.Type: GrantFiled: February 6, 2014Date of Patent: September 19, 2017Assignee: ZF Friedrichshafen AGInventors: Christian Wickel, Matthias Kram, Daniel Pittner, Peter Hammer
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Publication number: 20170219048Abstract: A coupling arrangement is provided with a vibration reduction device and with a clutch device. The vibration reduction device has at least one torsional vibration damper, an input connected to a drive, and an output connected to the clutch device by which a connection between the vibration reduction device and a driven end is at least substantially produced in a first operating state, and this connection is at least substantially cancelled in a second operating state. The vibration reduction device has a mass damper system that cooperates with the torsional vibration damper and is connected to the output of the vibration reduction device.Type: ApplicationFiled: September 15, 2015Publication date: August 3, 2017Applicant: ZF FRIEDRICHSHAGEN AGInventors: Martin HERTEL, Christian WEBER, Joerg SUDAU, Thomas BAUER, Michael WINTERSTEIN, Michael WIRACHOWSKI, Axel ROHM, Oliver ANDRES, Christian WICKEL, Florian POSTLER, Matthias KRAM, Nathalie WERNER
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Patent number: 9638283Abstract: A torsional vibration damper is provided with a damper mass carrier at which is received at least one damper mass that is movable relative to the damper mass carrier and at least one stop. The at least one stop is associated with each stop side of the at least one damper mass. The at least one damper mass and the stop have an extension in extension direction of a central axis. The at least one damper mass has a plurality of damper mass elements in extension direction of the central axis, while the stop has in extension direction of the central axis a stop profile at its side facing the stop sides of the damper mass elements. The stop profile has different radial distances from the central axis in association with the damper mass elements.Type: GrantFiled: September 30, 2013Date of Patent: May 2, 2017Assignee: ZF Friedrichshafen AGInventors: Michael Wirachowski, Matthias Kram, Ying Dong, Volker Stampf, Jörg Sudau, Armin Stürmer, Friedrich Kokott, Christoph Sasse, Daniel Pittner, Oliver Andres, Simone Vierneusel, Dennis Egler, Kyrill Siemens
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Publication number: 20160208887Abstract: A mass damper system includes a damper mass carrier having movable damper mass and a stop. The damper mass moves within a predetermined movement region during an operating state. A first movement region portion bounded by an initial position in which the damper mass is free from a deflection in circumferential direction and by a limit position in which the damper mass has undergone a deflection, and a second movement region portion defined by the limit position and a stop position in which the damper mass has come in contact with the stop. At a side facing the stop, the damper mass has a proximity profile that correspond to a stop profile such that in the first movement region portion the damper mass remains within a residual distance region relative to the stop in one extension portion of the proximity profile.Type: ApplicationFiled: July 29, 2014Publication date: July 21, 2016Inventors: Matthias KRAM, Jörg SUDAU, Dennis EGLER, Volker STAMPF, Kyrill SIEMENS
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Publication number: 20150369332Abstract: A vibration damping arrangement includes a first torsional vibration damper coupable to a drive member for transmitting torque and with a first secondary side which is rotatable with respect to the first primary side against the return action of a first damper element arrangement and a second torsional vibration damper with a second primary side connected to the first secondary side and with a second secondary side which is rotatable with respect to the second primary side against the return action of a second damper element arrangement and which is couplable to an output member, a deflection mass pendulum arrangement comprising at least one deflection mass; wherein the first damper element arrangement comprises a plurality of first damper element units acting parallel to one another and/or in that the second damper element arrangement comprises a plurality of second damper element units acting parallel to one another.Type: ApplicationFiled: February 6, 2014Publication date: December 24, 2015Inventors: Christian WICKEL, Matthias KRAM, Daniel PITTNER, Peter HAMMER
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Publication number: 20150316124Abstract: A torsional vibration damper is provided with a damper mass carrier at which is received at least one damper mass that is movable relative to the damper mass carrier and at least one stop. The at least one stop is associated with each stop side of the at least one damper mass. The at least one damper mass and the stop have an extension in extension direction of a central axis. The at least one damper mass has a plurality of damper mass elements in extension direction of the central axis, while the stop has in extension direction of the central axis a stop profile at its side facing the stop sides of the damper mass elements. The stop profile has different radial distances from the central axis in association with the damper mass elements.Type: ApplicationFiled: September 30, 2013Publication date: November 5, 2015Inventors: Michael WIRACHOWSKI, Matthias KRAM, Ying DONG, Volker STAMPF, Jörg SUDAU, Armin STÜRMER, Friedrich KOKOTT, Christoph SASSE, Daniel PITTNER, Oliver ANDRES, Simone VIERNEUSEL, Dennis EGLER, Kyrill SIEMENS
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Publication number: 20150285332Abstract: A torsional vibration damper has a damper mass carrier at which is received at least one damper mass movable relative to the damper mass carrier and with at least one stop. The at least one damper mass has a stop side with a geometric shaping. At least one stop is associated with the damper mass, and has an axial overlap with the at least one damper mass in extension direction of a central axis and a stop profile at its side facing the stop side of the damper mass. At least one stop receiver is associated with the least one stop for the at least one damper mass. The geometric shaping which is provided at the at least one damper mass has a first contact region operative at least substantially in radial direction and a second contact region operative at least substantially in tangential direction. The first contact region can be brought into operative connection with the stop, and the second contact region can be brought into operative connection with the stop receiver.Type: ApplicationFiled: September 30, 2013Publication date: October 8, 2015Inventors: Matthias Kram, Volker Stampf, Jörg Sudau, Christoph Sasse, Armin Stürmer, Michael Wirachowski, Ying Dong, Friedrich Kokott, Daniel Pittner, Oliver Andres, Simone Vierneusel, Dennis Egler