Patents by Inventor Michael Schoffmann
Michael Schoffmann 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: 11948549Abstract: The invention relates to an electromagnetic actuator, which is designed to be connected to a backside of a plate like structure and which comprises an annular coil arrangement and a magnet system being designed to generate a magnetic field transverse to the annular coil arrangement. The annular coil arrangement and the magnet system are connected to each other by a plurality of springs, which are arranged inside of the annular coil arrangement. Furthermore, the invention relates to an output device, comprising a plate like structure and an electromagnetic actuator of the above kind connected to a backside of the plate like structure.Type: GrantFiled: July 16, 2020Date of Patent: April 2, 2024Assignee: Sound Solutions International Co., Ltd.Inventors: Friedrich Reining, Christoph Schmauder, Gustav Otto, Michael Schoffmann
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Patent number: 11729555Abstract: An electrodynamic actuator (1a, 1b) is disclosed, which is designed to be connected to a plate like structure (2) and which comprises a coil arrangement (3a, 3b) with at least one voice coil (4a, 4b), a magnet system (5) with a movable magnetic circuit part (7, 7a . . . 7f) and a static magnetic circuit part (6a . . . 6F) and a spring arrangement (12) coupling the static magnetic circuit part (6a . . . 6F) to the movable magnetic circuit part (7, 7a . . . 7f) and allowing a relative movement between the same. Both the spring arrangement (12) and the magnet system (5) provide a total restoring force (FT) directed towards an idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f). A part of a total restoring force gradient (?FT/?z) caused by the magnet system (5) is at least 10% of the total restoring force gradient (?FT/?z) in said idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f).Type: GrantFiled: January 5, 2022Date of Patent: August 15, 2023Assignee: Sound Solutions International Co., Ltd.Inventors: Franz Heidinger, Manuel Mefleh, Gustav Otto, Friedrich Reining, Michael Schoffmann
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Publication number: 20220232326Abstract: An electrodynamic actuator (1a, 1b) is disclosed, which is designed to be connected to a plate like structure (2) and which comprises a coil arrangement (3a, 3b) with at least one voice coil (4a, 4b), a magnet system (5) with a movable magnetic circuit part (7, 7a . . . 7f) and a static magnetic circuit part (6a . . . 6F) and a spring arrangement (12) coupling the static magnetic circuit part (6a . . . 6F) to the movable magnetic circuit part (7, 7a . . . 7f) and allowing a relative movement between the same. Both the spring arrangement (12) and the magnet system (5) provide a total restoring force (FT) directed towards an idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f). A part of a total restoring force gradient (?FT/?z) caused by the magnet system (5) is at least 10% of the total restoring force gradient (?FT/?z) in said idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f).Type: ApplicationFiled: January 5, 2022Publication date: July 21, 2022Inventors: Franz Heidinger, Manuel Mefleh, Gustav Otto, Friedrich Reining, Michael Schoffmann
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Patent number: 11341948Abstract: The invention relates to an electromagnetic actuator, which can be connected to a backside of a plate like structure and which comprises a voice coil, a magnet system and a spring arrangement connecting the voice coil and a movable part of the magnet system. The spring arrangement comprises at least two spiral springs each having at least three spring legs. The spring legs run in radial and tangential direction in a clockwise or counterclockwise winding direction and are rotational symmetric around the coil axis. The winding directions of the spiral springs are chosen in a way that rotations around the coil axis caused by a relative movement between the voice coil and the movable part of the magnet system in the excursion direction are oriented in opposite directions. The invention also relates to an output device with a plate like structure and an electromagnetic actuator connected thereto.Type: GrantFiled: July 16, 2020Date of Patent: May 24, 2022Assignee: Sound Solutions International Co., Ltd.Inventors: Gustav Otto, Christoph Schmauder, Michael Schoffmann, Franz Heidinger
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Patent number: 10935056Abstract: An electromagnetic valve for a hydraulic system for an automatic transmission of a vehicle. An armature chamber is filled with hydraulic medium and fluidically connected to hydraulic lines of the hydraulic system. An armature is mounted in the armature chamber such that its stroke is adjustable. The armature includes a shut-off body and divides the armature chamber into an opening-side chamber facing the flow opening and into an inner chamber facing away from the flow opening. During a stroke of the armature, an oil exchange occurs, and a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. A hydraulic line leading to the opening-side chamber or to the inner chamber of the armature chamber includes a dirt collecting element that is designed as a permanent magnet and that retains contaminations in the hydraulic medium that flows through the hydraulic line during an oil exchange.Type: GrantFiled: May 8, 2015Date of Patent: March 2, 2021Assignees: AUDI AG, VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Dietmar Schuller, Andreas Deimel, Michael Schöffmann, Roland Meyer, Oliver Rang, Christian Corell
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Publication number: 20210020153Abstract: The invention relates to an electromagnetic actuator, which is designed to be connected to a backside of a plate like structure and which comprises an annular coil arrangement and a magnet system being designed to generate a magnetic field transverse to the annular coil arrangement. The annular coil arrangement and the magnet system are connected to each other by a plurality of springs, which are arranged inside of the annular coil arrangement. Furthermore, the invention relates to an output device, comprising a plate like structure and an electromagnetic actuator of the above kind connected to a backside of the plate like structure.Type: ApplicationFiled: July 16, 2020Publication date: January 21, 2021Inventors: Friedrich Reining, Christoph Schmauder, Gustav Otto, Michael Schoffmann
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Publication number: 20210021933Abstract: The invention relates to an electromagnetic actuator, which can be connected to a backside of a plate like structure and which comprises a voice coil, a magnet system and a spring arrangement connecting the voice coil and a movable part of the magnet system. The spring arrangement comprises at least two spiral springs each having at least three spring legs. The spring legs run in radial and tangential direction in a clockwise or counterclockwise winding direction and are rotational symmetric around the coil axis. The winding directions of the spiral springs are chosen in a way that rotations around the coil axis caused by a relative movement between the voice coil and the movable part of the magnet system in the excursion direction are oriented in opposite directions. The invention also relates to an output device with a plate like structure and an electromagnetic actuator connected thereto.Type: ApplicationFiled: July 16, 2020Publication date: January 21, 2021Inventors: Gustav Otto, Christoph Schmauder, Michael Schoffmann, Franz Heidinger
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Patent number: 10071624Abstract: A drive device for a motor vehicle includes a primary powertrain and a secondary powertrain, wherein the primary powertrain includes a combustion engine for generating a total torque; a torque distribution device coupled to the combustion engine and including a first and a second output, wherein the torque distribution device is designed to provide a first partial torque in mechanical form at its first output derived from the total torque, and to provide a second partial torque in electrical form at its second output derived from the total torque; and a transmission which is coupled to the first output of the torque distribution device; wherein the secondary powertrain includes an electric machine which is coupled to the second output of the torque distribution device; wherein the torque distribution device includes a torque limiting device which is designed to limit the first partial torque to a presettable threshold value.Type: GrantFiled: February 18, 2015Date of Patent: September 11, 2018Assignee: Audi AGInventors: Wolfgang Koch, Hans-Peter Fleischmann, Michael Schöffmann
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Publication number: 20170174068Abstract: A drive device for a motor vehicle includes a primary powertrain and a secondary powertrain, wherein the primary powertrain includes a combustion engine for generating a total torque; a torque distribution device coupled to the combustion engine and including a first and a second output, wherein the torque distribution device is designed to provide a first partial torque in mechanical form at its first output derived from the total torque, and to provide a second partial torque in electrical form at its second output derived from the total torque; and a transmission which is coupled to the first output of the torque distribution device; wherein the secondary powertrain includes an electric machine which is coupled to the second output of the torque distribution device; wherein the torque distribution device includes a torque limiting device which is designed to limit the first partial torque to a presettable threshold value.Type: ApplicationFiled: February 18, 2015Publication date: June 22, 2017Applicant: AUDI AGInventors: WOLFGANG KOCH, HANS-PETER FLEISCHMANN, MICHAEL SCHÖFFMANN
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Patent number: 9635455Abstract: An audio system that comprises an electro-acoustic transducer mounted onto a housing that forms a resonance volume which is at least partially filled with sound absorbing material, wherein the housing is realized with a deep-drawn foil at least partially filled with grains of the sound absorbing material.Type: GrantFiled: September 11, 2013Date of Patent: April 25, 2017Assignee: Sound Solutions International Co., Ltd.Inventors: Michael Schöffmann, Helmut Wasinger, Josef Herold, Mark Hannah
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Publication number: 20170089371Abstract: An electromagnetic valve for a hydraulic system for an automatic transmission of a vehicle. An armature chamber is filled with hydraulic medium and fluidically connected to hydraulic lines of the hydraulic system. An armature is mounted in the armature chamber such that its stroke is adjustable. The armature includes a shut-off body and divides the armature chamber into an opening-side chamber facing the flow opening and into an inner chamber facing away from the flow opening. During a stroke of the armature, an oil exchange occurs, and a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. A hydraulic line leading to the opening-side chamber or to the inner chamber of the armature chamber includes a dirt collecting element that is designed as a permanent magnet and that retains contaminations in the hydraulic medium that flows through the hydraulic line during an oil exchange.Type: ApplicationFiled: May 8, 2015Publication date: March 30, 2017Applicants: AUDI AG, VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Dietmar SCHULLER, Andreas DEIMEL, Michael SCHÖFFMANN, Roland MEYER, Oliver RANG, Christian CORELL
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Publication number: 20150110335Abstract: An open modular speaker assembly is configured to be inserted into a mobile wireless device and includes a frame, a magnetic assembly that is disposed within the frame and a membrane assembly disposed within the frame and in proximity to the magnetic assembly. Actuation of the magnetic assembly by an electric current causes a movement of the magnetic assembly causing a resultant movement of the membrane assembly. A first portion of the mobile wireless device and the membrane assembly form a front volume where the resultant movement of the membrane assembly produces sound in the front volume, and such that a second portion of the mobile wireless device and the membrane assembly form a back volume that is separated from the front volume by the membrane assembly. Air is displaced or exchanged between the front volume and the back volume.Type: ApplicationFiled: October 6, 2014Publication date: April 23, 2015Inventors: Vladimir Telemaque, Michael Schoffmann
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Publication number: 20150072723Abstract: An audio system that comprises an electro-acoustic transducer mounted onto a housing that forms a resonance volume which is at least partially filled with sound absorbing material, wherein the housing is realized with a deep-drawn foil at least partially filled with grains of the sound absorbing material.Type: ApplicationFiled: September 11, 2013Publication date: March 12, 2015Inventors: Michael Schöffmann, Helmut Wasinger, Josef Herold, Mark Hannah
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Publication number: 20130279739Abstract: An acoustic transducer basket for receiving and electrically contacting an acoustic transducer. The basket includes a spring bracket formed as an integral part of the basket. First electrical contact areas are formed on this spring for electrically contacting the basket of the spring force of the spring. The basket has second electrical contact areas for electrically connecting the acoustic transducer, and there is an electrical connection between first electrical contact areas and second electrical contact areas.Type: ApplicationFiled: April 18, 2013Publication date: October 24, 2013Inventors: Herbert Nemeth, Michael Schöffmann
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Publication number: 20130279734Abstract: An acoustic transducer assembly with a basket for receiving and electrically contacting an acoustic transducer, the basket being configured to be mounted on, and electrically connected to, a platform, such as a printed circuit board, or a support or a housing. The basket may include electrical contact areas for electrically connecting the basket to the platform, and at least one mounting structure for cooperating with a platform-sided mounting structure to form a fixed mechanical connection with the platform. An electrical contact area of the basket may be integrally formed with the mounting structure of the basket.Type: ApplicationFiled: April 18, 2013Publication date: October 24, 2013Applicant: Knowles Electronics Asia PTE. Ltd.Inventors: Erich Klein, Thomas Pauser, Michael Schöffmann
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Patent number: D578104Type: GrantFiled: July 23, 2007Date of Patent: October 7, 2008Assignee: NXP B.V.Inventors: Michael Schöffmann, Thomas Walter