Patents by Inventor Marc-Andre Schaefer
Marc-Andre Schaefer 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: 10760688Abstract: Rotary joints are disclosed, such as for supplying fluid to a pressure chamber that is disposed between a rotatable component and a stationary component. The rotary joint may include a seal carrier having at least one channel for a fluid connection to the pressure chamber. At least two axially spaced apart sealing rings may be disposed on the seal carrier for a static sealing of the at least one channel. At least one sealing element may be non-rotatably disposed on the seal carrier and configured to form an axial and a radial seal of the pressure chamber. The at least one sealing element may be configured to bear on a ring element that is non-rotatably connected to the rotatable component when pressure is built up in the pressure chamber and the at least one sealing element may have means for reducing the axial pressure exerted on the ring element.Type: GrantFiled: July 1, 2016Date of Patent: September 1, 2020Assignees: Schaeffler Technologies AG & Co. KG, GAPI Technische Produkte GmbHInventors: Robert Heuberger, Horst Brehm, Sebastian Niederle, Marc-André Schäfer, Andre Hofmann, Andreas Flint
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Patent number: 10655680Abstract: A sealing arrangement for a wheel bearing having a first component against a second component which is rotatable relative thereto, the sealing arrangement having a first seal arranged on the first component and a second seal arranged on the second component, the first seal has at least one opening for the passage of air at least in a sealing chamber formed spatially between the two seals, and a fabric element is provided to at least partially expand upon contact with water and thereby to seal the at least one opening.Type: GrantFiled: August 24, 2017Date of Patent: May 19, 2020Inventors: Simon Brähler, Andreas Kaiser, Alexander Häpp, Marc-André Schäfer
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Publication number: 20190345982Abstract: A sealing arrangement for a wheel bearing having a first component against a second component which is rotatable relative thereto, the sealing arrangement having a first seal arranged on the first component and a second seal arranged on the second component, the first seal has at least one opening for the passage of air at least in a sealing chamber formed spatially between the two seals, and a fabric element is provided to at least partially expand upon contact with water and thereby to seal the at least one openingType: ApplicationFiled: August 24, 2017Publication date: November 14, 2019Applicant: Schaeffler Technologies AG & Co. KGInventors: Simon Brähler, Andreas Kaiser, Alexander Häpp, Marc-André Schäfer
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Publication number: 20180195619Abstract: Rotary joints are disclosed, such as for supplying liquid to a pressure chamber that is disposed between a rotatable component and a stationary component. The rotary joint may include a seal carrier having at least one channel for a fluid connection to the pressure chamber. At least two axially spaced apart sealing rings may be disposed on the seal carrier for a static sealing of the at least one channel. At least one sealing element may be non-rotatably disposed on the seal carrier and configured to form an axial and a radial seal of the pressure chamber. The at least one sealing element may be configured to bear on a ring element that is non-rotatably connected to the rotatable component when pressure is built up in the pressure chamber and the at least one sealing element may have means for reducing the axial pressure exerted on the ring element.Type: ApplicationFiled: July 1, 2016Publication date: July 12, 2018Applicants: Schaeffler Technologies AG & Co. KG, GAPI Technische Produkte GmbHInventors: Robert Heuberger, Horst Brehm, Sebastian Niederle, Marc-André Schäfer, Andre Hofmann, Andreas Flint
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Patent number: 9074631Abstract: A wheel bearing arrangement with first rolling elements, which are capable of rolling on a first inner ring, wherein the rolling elements are guided by a first roller bearing cage, and an axial spacer element is provided for spacing apart the first inner ring from a bearing element, wherein the bearing element can in particular be a second inner ring. The intention is to facilitate the complex installation of the individual parts in wheel bearings for utility vehicles. The first rolling element cage forms, together with the axial spacer element, an axial form-fitting connection. The spacer element can be fixed to at least one of the inner rings via the form-fitting connection to the cage prior to tightening the wheel hub, together with the wheel bearing preinstalled thereon.Type: GrantFiled: August 22, 2011Date of Patent: July 7, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Christian Horn, Marc-Andre Schaefer
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Patent number: 8981764Abstract: A rolling bearing sensor, especially a rotational speed sensor, having a housing and a signal pick-up which is arranged in the housing in a manner secured against rotation and is arranged, with the housing, in a stationary receptacle in a stationary part of a rolling bearing or in a stationary component adjoining a rolling bearing, for example, an axle journal, where the housing has an outer design via which the rolling bearing sensor in the receptacle is secured against rotation in a form-fitting manner. The sensor may have a groove which runs in the axial direction and interacts with a screw or a projection. Alternatively, a securing element which predefines a defined angular position may be pushed onto the sensor.Type: GrantFiled: July 4, 2011Date of Patent: March 17, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Marc-Andre Schaefer, Jens Heim
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Patent number: 8827565Abstract: A roller bearing cage 16 with roller bearing pockets 18 which are arranged one next to the other in the circumferential direction and have the purpose of holding load-bearing roller bodies 10 of a roller bearing, wherein at least one end piece 14 which engages behind a roller bearing component 12 is formed on the roller bearing cage 16. The end piece 14, which is ideally embodied as a retaining claw, holds the inner ring and the roller body 10 together, but can be removed after or during the assembly by means of a predetermined rupture point 15, in order to make room for a further component, such as for example a sealing arrangement. As a result, despite the installation assistance, optimum use of the installation space is provided.Type: GrantFiled: November 15, 2011Date of Patent: September 9, 2014Assignee: Schaeffler Technologies AG & Co. KGInventor: Marc-Andre Schaefer
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Publication number: 20140126849Abstract: A wheel bearing arrangement with first rolling elements, which are capable of rolling on a first inner ring, wherein the rolling elements are guided by a first roller bearing cage, and an axial spacer element is provided for spacing apart the first inner ring from a bearing element, wherein the bearing element can in particular be a second inner ring. The intention is to facilitate the complex installation of the individual parts in wheel bearings for utility vehicles. The first rolling element cage forms, together with the axial spacer element, an axial form-fitting connection. The spacer element can be fixed to at least one of the inner rings via the form-fitting connection to the cage prior to tightening the wheel hub, together with the wheel bearing preinstalled thereon.Type: ApplicationFiled: August 22, 2011Publication date: May 8, 2014Applicant: Schaeffler Technologies AG & Co. KGInventors: Christian Horn, Marc-Andre Schaefer
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Patent number: 8696211Abstract: A compact cassette seal and a corresponding wheel hearing for a passenger car or truck. The cassette seal has a bent sheet-metal ring which is and/or can be non-rotatably connected to a radially inner component and an annular sealing system which is non-rotatably connected to a radially outer component. The sealing system has a bearing ring and a radially peripheral seal with at least one sealing lip. The seal is secured to the bearing ring and the sealing lips resting on the bent sheet-metal ring in a sealing manner. A radially outer ring end section of the sealing system defines a labyrinth seal with a bent sheet-metal section of the bent sheet-metal ring. The bent sheet-metal section radially overlaps the ring end section on the exterior thereby forming an axially aligned or substantially axially aligned labyrinth seal section of the labyrinth seal.Type: GrantFiled: November 12, 2008Date of Patent: April 15, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Alexander Haepp, Robert Heuberger, Marc-Andre Schaefer, Wilhelm Walter
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Publication number: 20140003758Abstract: A roller bearing cage 16 with roller bearing pockets 18 which are arranged one next to the other in the circumferential direction and have the purpose of holding load-bearing roller bodies 10 of a roller bearing, wherein at least one end piece 14 which engages behind a roller bearing component 12 is formed on the roller bearing cage 16. The end piece 14, which is ideally embodied as a retaining claw, holds the inner ring and the roller body 10 together, but can be removed after or during the assembly by means of a predetermined rupture point 15, in order to make room for a further component, such as for example a sealing arrangement. As a result, despite the installation assistance, optimum use of the installation space is provided.Type: ApplicationFiled: November 15, 2011Publication date: January 2, 2014Applicant: Schaeffler Technologies AG & Co. KGInventor: Marc-Andre Schaefer
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Publication number: 20130272637Abstract: A rolling bearing sensor, especially a rotational speed sensor, having a housing and a signal pick-up which is arranged in the housing in a manner secured against rotation and is arranged, with the housing, in a stationary receptacle in a stationary part of a rolling bearing or in a stationary component adjoining a rolling bearing, for example, an axle journal, where the housing has an outer design via which the rolling bearing sensor in the receptacle is secured against rotation in a form-fitting manner. The sensor may have a groove which runs in the axial direction and interacts with a screw or a projection. Alternatively, a securing element which predefines a defined angular position may be pushed onto the sensor.Type: ApplicationFiled: July 4, 2011Publication date: October 17, 2013Applicant: Schaeffler Technologies AG & Co. KGInventors: Marc-Andre Schaefer, Jens Heim
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Patent number: 8356946Abstract: The interchangeable wheel bearing unit has a wheel hub and two tapered roller bearings, each having an outer ring and an inner ring, between which a respective row of tapered rollers is situated, and a securing ring in at least one of the inner rings of the tapered roller bearing. To assemble the wheel bearing unit without special tools, each outer ring of the tapered roller bearings has a cylindrical extension, which runs coaxially with the wheel hub axis towards the outer face of the bearing and into which a respective seal is inserted, and a retaining element, which is supported on the corresponding inner ring and axially fixes the outer ring, is located on the opposite face of the respective tapered roller bearing from the seal.Type: GrantFiled: March 31, 2007Date of Patent: January 22, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Marc-Andre Schaefer, Robert Heuberger, Wolfram Henneberger
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Patent number: 7997316Abstract: A seal arrangement for a tire pressure-regulating device for a motor vehicle, which provides a compressed-air supply to a tire of a vehicle through a hole in an inner ring of a rolling bearing of a wheel bearing, through a seal housing which is connected to a wheel hub in a rotationally fixed manner, and through the wheel hub itself. A flat seal is fixed on the inner ring of the rolling bearing and the radially outer end of the seal has a sealing lip which is directed towards the seal housing and bears against it.Type: GrantFiled: January 18, 2007Date of Patent: August 16, 2011Assignee: Schaeffler KGInventors: Wilhelm Walter, Robert Heuberger, Marc-Andre Schaefer
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Publication number: 20110044569Abstract: A compact cassette seal and a corresponding wheel hearing for a passenger car or truck. The cassette seal has a bent sheet-metal ring which is and/or can be non-rotatably connected to a radially inner component and an annular sealing system which is non-rotatably connected to a radially outer component. The sealing system has a bearing ring and a radially peripheral seal with at least one sealing lip. The seal is secured to the bearing ring and the sealing lips resting on the bent sheet-metal ring in a sealing manner. A radially outer ring end section of the sealing system defines a labyrinth seal with a bent sheet-metal section of the bent sheet-metal ring. The bent sheet-metal section radially overlaps the ring end section on the exterior thereby forming an axially aligned or substantially axially aligned labyrinth seal section of the labyrinth seal.Type: ApplicationFiled: November 12, 2008Publication date: February 24, 2011Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventors: Alexander Haepp, Robert Heuber, Marc-Andre Schaefer, Wilhelm Walter
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Publication number: 20090175570Abstract: The interchangeable wheel bearing unit has a wheel hub and two tapered roller bearings, each having an outer ring and an inner ring, between which a respective row of tapered rollers is situated, and a securing ring in at least one of the inner rings of the tapered roller bearing. To assemble the wheel bearing unit without special tools, each outer ring of the tapered roller bearings has a cylindrical extension, which runs coaxially with the wheel hub axis towards the outer face of the bearing and into which a respective seal is inserted, and a retaining element, which is supported on the corresponding inner ring and axially fixes the outer ring, is located on the opposite face of the respective tapered roller bearing from the seal.Type: ApplicationFiled: March 31, 2007Publication date: July 9, 2009Applicant: SCHAEFFLER KGInventors: Marc-Andre Schaefer, Robert Heuberger, Wolfram Henneberger
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Publication number: 20080314487Abstract: Seal arrangement for a tire pressure-regulating device for a motor vehicle, comprising a compressed-air supply to a vehicle tire through a hole in the inner ring of a rolling bearing of a wheel bearing, through a seal housing which is connected to a wheel hub in a rotationally fixed manner and through the wheel hub itself, wherein a flat seal is fixed on the inner ring of the rolling bearing, with the radially outer end of the said seal having a sealing lip which is directed towards the seal housing and bears against it.Type: ApplicationFiled: January 18, 2007Publication date: December 25, 2008Applicant: SCHAEFFLER KGInventors: Wilhelm Walter, Robert Heuberger, Marc-Andre Schaefer