Patents by Inventor Ludwig Winkelmann
Ludwig Winkelmann 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: 8845200Abstract: A single-row deep groove ball bearing made substantially of an inner ring and an outer ring disposed coaxially thereto and balls disposed between the rings. The balls roll in deep groove tracks in an outer face of the inner ring and in an inner face of the outer ring, and the balls are held at equal distances to each other in the circumferential direction by a housing. The interior of the bearing is sealed by two circular ring-shaped seals axially opposite each other. At least one of the seals is a lip seal, which has an angular profile. A shape-stable radial seal leg of the seal is attached to the outer ring and forms a gap seal with an axial side of the inner ring, and a sealing lip, which is an overpressure valve, is disposed under the inner ring and slidingly contacts the inner face of the inner ring.Type: GrantFiled: July 2, 2010Date of Patent: September 30, 2014Assignee: Schaeffler Technologies AG & Co. KGInventor: Ludwig Winkelmann
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Patent number: 8764301Abstract: An anti-friction bearing, which has an outer ring, an inner ring and rolling bodies that are arranged between the rings, distributed over a circumference of the rings, and roll on the rings. For an increase of thermal insulation, electrical insulation and the like, a film section, which is manufactured without the removal of material from a plastic film, is attached on an outer circumference of the outer ring over at least part of an axial width of the outer ring and at least over part of an outer circumference of the outer ring.Type: GrantFiled: October 27, 2010Date of Patent: July 1, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Ludwig Winkelmann, Gudrun Martin, Juergen Windrich
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Patent number: 8628249Abstract: A sealed, single row angular contact ball bearing which has a seal arranged at both axial ends in a region of the rims. One bearing ring has on both sides one receiving opening for the sealing lip carrier and the associated other bearing ring has on both sides one sealing face for the sealing lip. The rims are coordinated with one another in such a way that receiving openings and sealing faces lie in one plane at the same radial spacing from a bearing axis. It is ensured in this way that the same seal can be used for sealing the angular contact ball bearing of generic configuration on both sides.Type: GrantFiled: November 14, 2006Date of Patent: January 14, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Ludwig Winkelmann, Harald Peschke, Dieter Jauernig
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Patent number: 8348512Abstract: A clutch release bearing device having an interior and an exterior raceway. The exterior raceway is equipped with a ring wall being retracted underneath the path radius of an inner roller body raceway. An interior sealing device is provided, including a ring element axially supported on an inner radial wall section of the retracted ring wall.Type: GrantFiled: February 18, 2011Date of Patent: January 8, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Steffen Dittmer, Bernhard Kloepfer, Ludwig Winkelmann
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Patent number: 8286775Abstract: A clutch release bearing (21) that is in contact with a disk spring is provided. The clutch release bearing (21) includes at least one curved contact surface (12, 28, 30, 33) that is located at a radial distance from the axis of rotation (4) of the clutch release bearing (21) and is used for contacting at least one end (39) of at least one spring tongue (40) of the disk spring.Type: GrantFiled: June 17, 2006Date of Patent: October 16, 2012Assignee: Schaeffler Technologies AG & Co. KGInventors: Ludwig Winkelmann, Steffen Dittmer
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Publication number: 20120243816Abstract: An anti-friction bearing, which has an outer ring, an inner ring and rolling bodies that are arranged between the rings, distributed over a circumference of the rings, and roll on the rings. For an increase of thermal insulation, electrical insulation and the like, a film section, which is manufactured without the removal of material from a plastic film, is attached on an outer circumference of the outer ring over at least part of an axial width of the outer ring and at least over part of an outer circumference of the outer ring.Type: ApplicationFiled: October 27, 2010Publication date: September 27, 2012Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventors: Ludwig Winkelmann, Gudrun Martin, Juergen Windrich
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Publication number: 20120114278Abstract: A single-row deep groove ball bearing made substantially of an inner ring and an outer ring disposed coaxially thereto and balls disposed between the rings. The balls roll in deep groove tracks in an outer face of the inner ring and in an inner face of the outer ring, and the balls are held at equal distances to each other in the circumferential direction by a housing. The interior of the bearing is sealed by two circular ring-shaped seals axially opposite each other. At least one of the seals is a lip seal, which has an angular profile. A shape-stable radial seal leg of the seal is attached to the outer ring and forms a gap seal with an axial side of the inner ring, and a sealing lip, which is an overpressure valve, is disposed under the inner ring and slidingly contacts the inner face of the inner ring.Type: ApplicationFiled: July 2, 2010Publication date: May 10, 2012Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventor: Ludwig Winkelmann
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Publication number: 20110206311Abstract: A clutch release bearing device having an interior and an exterior raceway. The exterior raceway is equipped with a ring wall being retracted underneath the path radius of an inner roller body raceway. An interior sealing device is provided, including a ring element axially supported on an inner radial wall section of the retracted ring wall.Type: ApplicationFiled: February 18, 2011Publication date: August 25, 2011Applicant: Schaeffler Tehcnologies GmbH & Co., KGInventors: Steffen Dittmer, Bernhard Kloepfer, Ludwig Winkelmann
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Publication number: 20100247019Abstract: A wheel mounting for automotive vehicles substantially comprising a multi-row angular contact rolling bearing comprising an inner bearing ring arranged on or at least partially integrated in a hub of a wheel side-fixing flange, an outer bearing ring coaxial to the inner bearing ring and arranged in or at least partially integrated in a hub of a vehicle side-fixing flange, and a plurality of rolling elements arranged in a plurality of rows next to one another between the inner and the outer bearing rings, which rolling elements roll on defined, inclined pressure angle axes in groove-shaped raceways of the inner and the outer bearing rings and are retained uniformly spaced from one another in peripheral direction in a plurality of bearing cages wherein all the rolling elements of the angular contact rolling bearing are configured in form of ball-rollers comprising two parallel side surfaces obtained by symmetric flattening of a basic ball shape such that a width of the ball-rollers between these side surfaces iType: ApplicationFiled: October 15, 2007Publication date: September 30, 2010Inventors: Horst Döppling, Heinrich Hofmann, Rainer Eidloth, Robert Plank, Ludwig Winkelmann
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Patent number: 7438170Abstract: A clutch release arrangement (1) for a clutch release (pressure plate) (6) used in vehicles is provided. The clutch release arrangement (1) includes a control lever (2), which forms one unit together with a housing (3) and also a clutch release bearing (4). The housing (3) is supported directly on the control lever (2) by contact surfaces (8a, 8b or 18a, 18b) of different lengths, which allow height compensation “s” at assembly.Type: GrantFiled: December 22, 2005Date of Patent: October 21, 2008Assignee: Schaeffler KGInventors: Markus Maier, Bernhard Klopfer, Ludwig Winkelmann
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Publication number: 20080247696Abstract: A sealed, single row angular contact ball bearing is distinguished by the fact that the seal (25, 40, 47, 48, 49, 50) is arranged at both axial ends in the region of the rims (21, 22, 23, 24), one bearing ring (16) having on both sides in each case one receiving opening (37, 44) for the sealing lip carrier (26) and the associated other bearing ring (15) having on both sides in each case one sealing face (30) for the sealing lip (29, 55, 56, 57, 58), and the rims (21, 22, 23, 24) being coordinated with one another in such a way that receiving openings (37, 44) and sealing faces (30) lie in in each case one plane (38, 39) at the same radial spacing from a bearing axis. It is ensured in this way that the same seal can be used for sealing the angular contact ball bearing of generic configuration on both sides.Type: ApplicationFiled: November 14, 2006Publication date: October 9, 2008Applicant: SCHAEFFLER KGInventors: Ludwig Winkelmann, Harald Peschke, Dieter Jauernig
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Publication number: 20080210515Abstract: A clutch release bearing (21) that is in contact with a disk spring is provided. The clutch release bearing (21) includes at least one curved contact surface (12, 28, 30, 33) that is located at a radial distance from the axis of rotation (4) of the clutch release bearing (21) and is used for contacting at least one end (39) of at least one spring tongue (40) of the disk spring.Type: ApplicationFiled: June 17, 2006Publication date: September 4, 2008Applicant: SCHAEFFLER KGInventors: Ludwig Winkelmann, Steffen Dittmer
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Patent number: 7416070Abstract: A clutch operator for a disconnectable clutch useful in a motor vehicle, and having a self-adjusting release bearing supported on a housing and in the form of a rolling-contact bearing designed as an inclined-shoulder bearing. The bearing has an outer bearing ring, a rotating inner bearing ring and rolling bodies guided between the rings. An adjusting ring at the inner bearing ring. A sliding element in a supporting region of the adjusting ring on the inner bearing ring, and being in the form of complementary spherical-cap segments. A noise-reducing and wear-reducing coating, on which a spring element connected to the disconnectable clutch is supported at a radially oriented annular flange of the adjusting ring.Type: GrantFiled: October 5, 2005Date of Patent: August 26, 2008Assignee: Ina Schaeffler KGInventors: Ludwig Winkelmann, Steffen Dittmer, Bernhard Klöpfer
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Publication number: 20070029156Abstract: The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston.Type: ApplicationFiled: October 12, 2006Publication date: February 8, 2007Inventors: Axel Rogner, Manfred Jansen, Woflgang Fugel, Ulrich Helfmeier, Ernani Almeida, Dieter Adler, Uwe Abraham, Gerhard Meyer, Ludwig Winkelmann, Rainer Venz, Manfred Kraus, Peter Giese, Roland Welter, Jean-Francois Heller, Volker Lang, Wolfgang Sulger, Urban Panther
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Patent number: 7121396Abstract: The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston.Type: GrantFiled: March 4, 2004Date of Patent: October 17, 2006Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Axel Rogner, Manfred Jansen, Wolfgang Fugel, Ulrich Helfmeier, Ernani Almeida, Dieter Adler, Uwe Abraham, Gerhard Meyer, Ludwig Winkelmann, Rainer Venz, Manfred Kraus, Peter Giese, Roland Welter, Jean-Francois Heller, Volker Lang, Wolfgang Sulger, Urban Panther
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Publication number: 20060169568Abstract: A clutch release arrangement (1) for a clutch release (pressure plate) (6) used in vehicles is provided. The clutch release arrangement (1) includes a control lever (2), which forms one unit together with a housing (3) and also a clutch release bearing (4). The housing (3) is supported directly on the control lever (2) by contact surfaces (8a, 8b or 18a, 18b) of different lengths, which allow height compensation “s” at assembly.Type: ApplicationFiled: December 22, 2005Publication date: August 3, 2006Applicant: INA-Schaeffler KGInventors: Markus Maier, Bernhard Klopfer, Ludwig Winkelmann
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Publication number: 20060081439Abstract: A clutch operator for a disconnectable clutch useful in a motor vehicle, and having a self-adjusting release bearing supported on a housing and in the form of a rolling-contact bearing designed as an inclined-shoulder bearing. The bearing has an outer bearing ring, a rotating inner bearing ring and rolling bodies guided between the rings. An adjusting ring at the inner bearing ring. A sliding element in a supporting region of the adjusting ring on the inner bearing ring, and being in the form of complementary spherical-cap segments. A noise-reducing and wear-reducing coating, on which a spring element connected to the disconnectable clutch is supported at a radially oriented annular flange of the adjusting ring.Type: ApplicationFiled: October 5, 2005Publication date: April 20, 2006Inventors: Ludwig Winkelmann, Steffen Dittmer, Bernhard Klopfer
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Patent number: 6854578Abstract: A clutch release bearing includes a housing, a first bearing ring having a skirt for fixed rotative securement of the first bearing ring to the housing, a revolving second bearing ring connected to the separating clutch via a spring element, and a plurality of rolling elements guided between the first and second bearing rings. Seals are provided on both sides of the rolling elements at a distance thereto and involve a sealing arrangement which is securely fixed to the housing and comprised of at least two components to establish two sealing zones for sealing an annular gap between the first and second bearing rings. The sealing arrangement cooperates with a planar surface of the revolving bearing ring and assumes a desired position, when the revolving bearing ring is installed with the assistance of a press-fit tool.Type: GrantFiled: May 30, 2003Date of Patent: February 15, 2005Assignee: INA-Schaeffler KGInventors: Steffen Dittmer, Bernhard Klöpfer, Ludwig Winkelmann
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Patent number: 6843354Abstract: A self-adjusting release bearing in the form of a tapered rolling bearing for a separating clutch disposed between an internal combustion engine and a gearbox of a motor vehicle, includes a non-rotating first bearing ring, a revolving second bearing ring, and a plurality of rolling elements guided between the first and second bearing rings. Supported upon a calotte-shaped section of one of the first and second bearing rings in a contact zone is an adjustment ring having a complementary calotte-shaped section to thereby allow pivoting of the release bearing, whereby a sliding element made of thermoplastic material is disposed in the contact zone.Type: GrantFiled: November 14, 2003Date of Patent: January 18, 2005Assignee: INA-Schaeffler KGInventors: Steffen Dittmer, Ludwig Winkelmann, Bernhard Klöpfer
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Publication number: 20040238313Abstract: The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston.Type: ApplicationFiled: March 4, 2004Publication date: December 2, 2004Inventors: Axel Rogner, Manfred Jansen, Wolfgang Fugel, Ulrich Helfmeier, Ernani Almeida, Dieter Adler, Uwe Abraham, Gerhard Meyer, Ludwig Winkelmann, Rainer Venz, Manfred Kraus, Peter Giese, Roland Welter, Jean-Francois Heller, Volker Lang, Wolfgang Sulger, Urban Panther