Patents by Inventor David Schnaedelbach
David Schnaedelbach 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: 20240117859Abstract: A torque transmitting device for a drivetrain for transmitting a drive torque to an output element. The device having: an electric motor with a conversion unit, which comprises a stator and a rotor that is rotatable relative to the stator, for converting electrical energy into mechanical energy; and a torsional vibration damper with a damper mass received on a damper mass support such that the damper mass can be deflected to a limited extent against the action of a restoring force, the damper mass being arranged so as to overlap radially with the conversion unit.Type: ApplicationFiled: August 20, 2020Publication date: April 11, 2024Applicant: Schaeffler Technologies AG & Co. KGInventors: Benjamin Vögtle, Stephan Maienschein, Peter Wahl, Daniel Echle, David Schnädelbach, Thorsten Krause
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Patent number: 11802612Abstract: A hydrodynamic torque converter and a torsional vibration damper include a pump wheel connected on the drive side and a turbine wheel which is driven by the pump wheel. Between the housing of the torque converter and an output hub, a torsional vibration damper, which includes an input part that can be connected to the housing by a converter bridging clutch, and an output part, which is connected to the output hub, are provided. In order to allow a special wiring of the torsional vibration damper, an intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, said intermediate flange having a centrifugal pendulum and being connected to the turbine wheel.Type: GrantFiled: March 12, 2020Date of Patent: October 31, 2023Assignee: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Patent number: 11796032Abstract: A torsional vibration damper and a hydrodynamic torque converter comprising same is disclosed. The torsional vibration damper has an input part which can be rotated about a rotational axis (d) and an output part. An intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, and the intermediate flange is made of two axially spaced interconnected lateral parts, axially between which the input part and the output part are received. In order to improve the loading of the spring devices, the loading of the spring devices by means of the intermediate flange is at least partly provided by loading means arranged between the lateral parts.Type: GrantFiled: March 10, 2020Date of Patent: October 24, 2023Assignee: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Patent number: 11773952Abstract: A hydrodynamic torque converter and a torsional vibration damper for same, having a pump wheel connected on the drive side and a turbine wheel driven thereby, wherein a torsional vibration damper and an output part are provided between a housing of the hydrodynamic torque converter and an output hub. The torsional vibration damper having an input part that can be connected to the housing by a converter lock-up clutch, and said output part being connected to the output hub, wherein an intermediate flange arranged in each case counter to a spring device effective in the circumferential direction is provided between the input part and the output part. In order to protect the spring devices against damage in a manner not affecting the installation space, an angle of rotation of the intermediate flange counter to the effect of the spring devices is limited radially inside the spring devices.Type: GrantFiled: February 3, 2020Date of Patent: October 3, 2023Assignee: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Publication number: 20220205509Abstract: A torsional vibration damper and a hydrodynamic torque converter comprising same is disclosed. The torsional vibration damper has an input part which can be rotated about a rotational axis (d) and an output part. An intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, and the intermediate flange is made of two axially spaced interconnected lateral parts, axially between which the input part and the output part are received. In order to improve the loading of the spring devices, the loading of the spring devices by means of the intermediate flange is at least partly provided by loading means arranged between the lateral parts.Type: ApplicationFiled: March 10, 2020Publication date: June 30, 2022Applicant: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Publication number: 20220178431Abstract: A hydrodynamic torque converter and a torsional vibration damper include a pump wheel connected on the drive side and a turbine wheel which is driven by the pump wheel. Between the housing of the torque converter and an output hub, a torsional vibration damper, which includes an input part that can be connected to the housing by a converter bridging clutch, and an output part, which is connected to the output hub, are provided. In order to allow a special wiring of the torsional vibration damper, an intermediate flange is arranged against a respective spring device, which acts in a circumferential direction, between the input part and the output part, said intermediate flange having a centrifugal pendulum and being connected to the turbine wheel.Type: ApplicationFiled: March 12, 2020Publication date: June 9, 2022Applicant: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Publication number: 20220170539Abstract: A hydrodynamic torque converter and a torsional vibration damper for same, having a pump wheel connected on the drive side and a turbine wheel driven thereby, wherein a torsional vibration damper and an output part are provided between a housing of the hydrodynamic torque converter and an output hub. The torsional vibration damper having an input part that can be connected to the housing by a converter lock-up clutch, and said output part being connected to the output hub, wherein an intermediate flange arranged in each case counter to a spring device effective in the circumferential direction is provided between the input part and the output part. In order to protect the spring devices against damage in a manner not affecting the installation space, an angle of rotation of the intermediate flange counter to the effect of the spring devices is limited radially inside the spring.Type: ApplicationFiled: February 3, 2020Publication date: June 2, 2022Applicant: Schaeffler Technologies AG & Co. KGInventor: David Schnädelbach
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Patent number: 9803717Abstract: A centrifugal-force pendulum device having a pendulum flange and at least two pendulum masses fastened on both sides of the pendulum flange by means of a spacer bolt received in a cut-out of the pendulum flange to form a pendulum mass pair, wherein the pendulum mass pair is guided and pivoted in a limited manner with respect to the pendulum flange by means of at least two rolling elements, and the rolling elements are received and roll in guide tracks in the pendulum masses and in complementarily shaped guide tracks in the pendulum flange, and wherein the spacer bolt is equipped, in its axial region which reaches through the cut-out in the pendulum flange, with damping means for damping contact of the spacer bolt against the cut-out, and compression of the damping means is limited by contact of a rolling element against the guide track which receives the rolling element.Type: GrantFiled: May 21, 2015Date of Patent: October 31, 2017Assignee: Schaeffler Technologies AG & Co. KGInventors: David Schnaedelbach, Florian Baral, Tobias Schuster, Bernhard Ziegler
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Patent number: 9709126Abstract: A torsional vibration damper includes a pendulum flange which is rotatable around an axis of rotation, having a cutout, as well as two pendulum mass pairs which are movably attached to the pendulum flange, adjacent to each other in the circumferential direction, and an elastic element to damp mutual colliding of adjacent pendulum mass pairs. The pendulum mass pairs each comprise two pendulum masses which are positioned opposite each other relative to the pendulum flange, and a bolt which runs through the cutout and connects the pendulum masses to each other axially. In the area of the cutout an elastic element is attached to each of the two bolts, which is set up to collide with the other elastic element in the circumferential direction.Type: GrantFiled: July 3, 2013Date of Patent: July 18, 2017Assignee: Schaeffler Technologies AG & Co. KGInventors: David Schnaedelbach, Christian Huegel, Michael Rieber
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Patent number: 9631696Abstract: The invention relates to a centrifugal force pendulum (100) for suppressing torsional oscillations in a drive train, comprising a first and a second flange (105, 110) that are non-rotatably connected to the drive train and a first and a second pendulum mass (125, 135) that are arranged axially offset between the flanges. The pendulum masses have different suppressing frequencies.Type: GrantFiled: October 31, 2012Date of Patent: April 25, 2017Assignee: Schaeffler Technologies AG & Co. KGInventors: Michael Kühnle, David Schnädelbach
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Patent number: 9261165Abstract: A torsional vibration damper for a drivetrain of a motor vehicle having a substantially discoidal centrifugal flange and a plurality of centrifugal pendulum-type absorbers. Each centrifugal pendulum-type absorber includes a first pendulum mass and a second pendulum mass. The first pendulum mass is arranged above a first surface of the pendulum flange, and the second pendulum mass is arranged above a second surface of the pendulum flange. The first pendulum mass and the second pendulum mass are firmly connected to each other by means of at least two spacing bolts in each case. The pendulum flange has a plurality of cutouts in which the spacing bolts are guided. A second spacing bolt of a first centrifugal pendulum-type absorber and a first spacing bolt of a second centrifugal pendulum-type absorber are guided in at least one first cutout.Type: GrantFiled: September 4, 2012Date of Patent: February 16, 2016Assignee: Schaeffler Technologies AG & Co. KGInventors: Stefan Jung, David Schnaedelbach, Markus Werner, Christian Huegel, Stephan Maienschein, Thorsten Krause
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Patent number: 9188171Abstract: An actuating device for exerting a force that causes two components arranged to be rotatable relative to each other about an axis of rotation to be urged axially away from each other comprising a radial support element forming a first hydraulic pressure chamber and a second hydraulic pressure chamber, each of the pressure chambers surrounding the axis of rotation and the first pressure chamber being in fluid connection with the second pressure chamber. The actuating device further comprises a first piston axially supported on the first component for sealing the first pressure chamber in an axially displaceable way and a second piston axially supported on the second component for sealing the second pressure chamber in an axially displaceable way.Type: GrantFiled: November 30, 2012Date of Patent: November 17, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Michael Kuehnle, David Schnaedelbach
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Publication number: 20150252872Abstract: A centrifugal-force pendulum device having a pendulum flange and at least two pendulum masses fastened on both sides of the pendulum flange by means of a spacer bolt received in a cut-out of the pendulum flange to form a pendulum mass pair, wherein the pendulum mass pair is guided and pivoted in a limited manner with respect to the pendulum flange by means of at least two rolling elements, and the rolling elements are received and roll in guide tracks in the pendulum masses and in complementarily shaped guide tracks in the pendulum flange, and wherein the spacer bolt is equipped, in its axial region which reaches through the cut-out in the pendulum flange, with damping means for damping contact of the spacer bolt against the cut-out, and compression of the damping means is limited by contact of a rolling element against the guide track which receives the rolling element.Type: ApplicationFiled: May 21, 2015Publication date: September 10, 2015Inventors: David Schnaedelbach, Florian Baral, Tobias Schuster, Bernhard Ziegler
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Publication number: 20150204416Abstract: A torsional vibration damper includes a pendulum flange which is rotatable around an axis of rotation, having a cutout, as well as two pendulum mass pairs which are movably attached to the pendulum flange, adjacent to each other in the circumferential direction, and an elastic element to damp mutual colliding of adjacent pendulum mass pairs. The pendulum mass pairs each comprise two pendulum masses which are positioned opposite each other relative to the pendulum flange, and a bolt which runs through the cutout and connects the pendulum masses to each other axially. In the area of the cutout an elastic element is attached to each of the two bolts, which is set up to collide with the other elastic element in the circumferential direction.Type: ApplicationFiled: July 3, 2013Publication date: July 23, 2015Inventors: David Schnaedelbach, Christian Huegel, Michael Rieber
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Publication number: 20150176676Abstract: The invention relates to a centrifugal-force pendulum having a pair of pendulum masses and a pendulum flange, in which a curved cut-out having a cut-out contour is provided, wherein the pendulum masses of the pair of pendulum masses are arranged on both sides of the pendulum flange and are connected to each other by at least one spacer pin led through the cut-out, wherein the spacer pin has a damping arrangement which comprises at least one stabilizing element and at least one elastic damping element (64), wherein the damping arrangement is designed to damp an impact of the spacer pin on the cut-out contour of the cut-out, wherein end compression of the damping element can be carried out by the impact, wherein the stabilizing element limits the end compression.Type: ApplicationFiled: July 18, 2013Publication date: June 25, 2015Inventors: Christian Dinger, Christian Huegel, David Schnaedelbach, Florian Baral
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Publication number: 20150101450Abstract: The invention relates to a centrifugal force pendulum (100) for suppressing torsional oscillations in a drive train, comprising a first and a second flange (105, 110) that are non-rotatably connected to the drive train and a first and a second pendulum mass (125, 135) that are arranged axially offset between the flanges. The pendulum masses have different suppressing frequencies.Type: ApplicationFiled: October 31, 2012Publication date: April 16, 2015Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventors: Michael Kühnle, David Schnädelbach
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Patent number: 8925420Abstract: A centrifugal pendulum mechanism having a pendulum flange and pendulum masses, which are fastened by bolts on both sides of the pendulum flange and are guided by rollers and can be pivoted slightly relative to the pendulum flange. At least two pendulum masses are arranged on the pendulum flange so as to be circumferentially adjacent. One pendulum mass has a lateral surface that faces the adjacent pendulum mass, and the contour of the lateral surface is at a substantially acute angle.Type: GrantFiled: September 4, 2012Date of Patent: January 6, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Darius Wysgol, David Schnaedelbach, Thorsten Krause
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Patent number: 8881622Abstract: A centrifugal pendulum mechanism that includes a pendulum flange and pendulum masses which are fastened on both sides of the pendulum flange by a spacing bolt accommodated in a curved cutout of the pendulum flange to form a pair of pendulum masses, where the pair of pendulum masses is guided relative to the pendulum flange by the at least two rollers and can be pivoted restrictively because of a stop, where the rollers are accommodated in curved guide tracks in the pendulum masses and in complementary curved guide tracks in the pendulum flange and can be rolled, and at least two pairs of pendulum masses are arranged so as to be circumferentially adjacent to each other.Type: GrantFiled: September 10, 2012Date of Patent: November 11, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Stephan Maienschein, David Schnaedelbach, Darius Wysgol, Christian Huegel, Stefan Jung, Thorsten Krause, Eugen Kombowski
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Publication number: 20130305876Abstract: A centrifugal-force pendulum device having a pendulum flange and at least two pendulum masses fastened on both sides of the pendulum flange by means of a spacer bolt received in a cut-out of the pendulum flange to form a pendulum mass pair, wherein the pendulum mass pair is guided and pivoted in a limited manner with respect to the pendulum flange by means of at least two rolling elements, and the rolling elements are received and roll in guide tracks in the pendulum masses and in complementarily shaped guide tracks in the pendulum flange, and wherein the spacer bolt is equipped, in its axial region which reaches through the cut-out in the pendulum flange, with damping means for damping contact of the spacer bolt against the cut-out, and compression of the damping means is limited by contact of a rolling element against the guide track which receives the rolling element.Type: ApplicationFiled: June 21, 2013Publication date: November 21, 2013Inventors: David Schnaedelbach, Florian Baral, Tobias Schuster, Bernhard Ziegler
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Publication number: 20130283966Abstract: A centrifugal force oscillating device having oscillating masses that are situated axially on both sides of an oscillating mass carrier rotatable around an axis of rotation and form an oscillating mass pair, where the oscillating masses can be swiveled to a limited extent along an oscillation path opposite the oscillating mass carrier with the help of at least one roll-off element that can be rolled off in cut-outs in both the oscillating mass carrier and the oscillating masses, and where the oscillating masses can be moved to a limited extent axially relative to each other to form the oscillating mass pair, and where the oscillating masses of an oscillating mass pair are movable to a limited extent radially and/or circumferentially relative to each other.Type: ApplicationFiled: June 21, 2013Publication date: October 31, 2013Inventors: Florian Baral, David Schnaedelbach