Patents by Inventor Ralf Rönnebeck
Ralf Rönnebeck 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: 10790719Abstract: A stator of an electric machine has an annular stator lamination stack at which stator coils with coil ends are arranged by winding bodies and are interconnected with an interconnection device that has a plurality of connection conductors arranged coaxially to one another and which are electrically insulated from one another by insulating layers. The connection conductors have coil connection regions for the coil ends and power connection regions for supplying power to the electric machine (10). The connection conductors are annular disks and are arranged in an axially staggered manner at the stator. Each connection conductor has at least one fastening portion for fastening to the stator and a winding body has at least one connection area. The fastening portions of the connection conductors are arranged to overlap one another, and the connection conductors are fastened along with them to the connection area of the winding body.Type: GrantFiled: December 8, 2016Date of Patent: September 29, 2020Assignee: ZF Friedrichshafen AGInventors: Roland Lindwurm, Christoph Wieder, Jochen Wittmann, Ralf Rönnebeck, Marcus Van Heyden, Alexander Schäflein
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Publication number: 20190006905Abstract: A stator of an electric machine has an annular stator lamination stack at which stator coils with coil ends are arranged by winding bodies and are interconnected with an interconnection device that has a plurality of connection conductors arranged coaxially to one another and which are electrically insulated from one another by insulating layers. The connection conductors have coil connection regions for the coil ends and power connection regions for supplying power to the electric machine (10). The connection conductors are annular disks and are arranged in an axially staggered manner at the stator. Each connection conductor has at least one fastening portion for fastening to the stator and a winding body has at least one connection area. The fastening portions of the connection conductors are arranged to overlap one another, and the connection conductors are fastened along with them to the connection area of the winding body.Type: ApplicationFiled: December 8, 2016Publication date: January 3, 2019Inventors: Roland LINDWURM, Christoph WIEDER, Jochen WITTMANN, Ralf RÖNNEBECK, Marcus VAN HEYDEN, Alexander SCHÄFLEIN
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Publication number: 20170207675Abstract: A coil for a stator of an electric machine, comprising a winding body with a winding area formed by a winding carrier and two legs that limit the winding area connected to the winding carrier. At least one leg has a first wire guide area, a coil winding arranged at the winding body and which has a winding wire with a winding start area and a winding end area and with coil ends extending, respectively, from the winding start area and the winding end area. One coil end is arranged at the first wire guide area and exits from the coil at the first wire guide area. A coil end located between the winding start area or the winding end area and the first wire guide area is constructed with a free wire portion in which the winding wire is arranged in a cantilevering manner.Type: ApplicationFiled: June 1, 2015Publication date: July 20, 2017Inventors: Ralf RÖNNEBECK, Christian BRÜCKNER, Michael MEIER
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Patent number: 8358045Abstract: Presented is a winding arrangement for an electric machine that includes a laminated core that includes a yoke that includes a plurality of teeth each having flanks that form first wedge surfaces and a winding support area that has a trapezoidal cross-section. The arrangement further includes a coil winding, and a winding body configured to arrange the coil winding on one of the plurality of teeth. The coil winding has an inner area arranged opposite the first wedge surfaces and represents second wedge surfaces. The arrangement further includes a stop means disposed on the winding body and/or one of the plurality of teeth. The stop means is configured to limit movement of the winding body in a direction toward the yoke. The arrangement further includes a centering means configured to center the winding body on one of the plurality of teeth.Type: GrantFiled: July 24, 2008Date of Patent: January 22, 2013Assignee: ZF Friedrichshafen AGInventors: Marcus van Heyden, Alexander Gehring, Ralf Rönnebeck, Florian Leberfinger, Frank Kewes
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Patent number: 8183728Abstract: A stator for an electric machine includes an annular stator yoke at which a plurality of radially projecting stator teeth carrying coils with coil terminals is circumferentially arranged. Annular connection conductors are arranged concentrically at a carrier member adjacent to the coils so as to be electrically insulated relative to one another and are connected to the coil terminals in a predetermined manner in the connection area of the carrier member. The coil terminals emerge axially from the coils and apertures corresponding to the coil terminals are formed in a wall area of the carrier member. The coil terminals extend axially through these apertures into the connection area of the carrier member, wherein the wall area of the carrier member radially overlaps an exit area where the coil terminals emerge from the coils.Type: GrantFiled: June 25, 2009Date of Patent: May 22, 2012Assignee: ZF Friedrichshafen AGInventors: Alexander Schäflein, Matthias Weidner, Ralf Ronnebeck, Marcus van Heyden
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Publication number: 20110118070Abstract: A transmission device (1) having a transmission housing (2) in which several assemblies can be positioned for creating different gear ratios, and a start-up device, preferably a hydrodynamic torque converter. At least one breakout (3, 13) is provided in the wall area of the transmission housing (2), where the edge areas (4) are designed as stiffening zones and through which the torque is brought from the transmission housing (2) to auxiliary drive trains. In the area (5) of the transmission housing (2), which is designated for a start-up device, at least one electric machine (6) of a hybrid system is provided. A connection of the electric machine (6), which is positioned in the transmission housing (2), to power electronic located external of the transmission housing (2), is brought through the at least one breakout (13) of the transmission housing (2).Type: ApplicationFiled: July 16, 2009Publication date: May 19, 2011Applicant: ZF FRIEDRICHSHAFEN AGInventors: Wolfgang Purretat, Ralf Ronnebeck, Alexander Schaflein, Bernard Hunold, Kai Borntraeger, Rene Budach, Max Bachamann, Alexander Gehring
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Publication number: 20100156208Abstract: A stator for an electric machine includes an annular stator yoke at which a plurality of radially projecting stator teeth carrying coils with coil terminals is circumferentially arranged. Annular connection conductors are arranged concentrically at a carrier member adjacent to the coils so as to be electrically insulated relative to one another and are connected to the coil terminals in a predetermined manner in the connection area of the carrier member. The coil terminals emerge axially from the coils and apertures corresponding to the coil terminals are formed in a wall area of the carrier member. The coil terminals extend axially through these apertures into the connection area of the carrier member, wherein the wall area of the carrier member radially overlaps an exit area where the coil terminals emerge from the coils.Type: ApplicationFiled: June 25, 2009Publication date: June 24, 2010Applicant: ZF Friedrichshafen AGInventors: Alexander Schäflein, Matthias Weidner, Ralf Ronnebeck, Marcus van Heyden
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Patent number: 7732968Abstract: A winding body for holding a winding of an electrical conductor to produce a coil for an electrical machine includes a winding area formed by a winding support and two sidepieces connected to the winding support. The sidepieces form the boundaries of the winding area and are connected to the winding support. Various measures are proposed for mounting a compact winding on the winding body, for arranging the winding body without play and in an operationally reliable manner on a tooth of an electrical machine, and for wiring several coils together in a space-saving manner by using the winding body.Type: GrantFiled: May 11, 2007Date of Patent: June 8, 2010Assignee: ZF Friedrichshafen AGInventors: Manfred Zimmer, Ralf Rönnebeck, Alexander Gehring
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Publication number: 20090189474Abstract: Presented is a winding arrangement for an electric machine that includes a laminated core that includes a yoke that includes a plurality of teeth each having flanks that form first wedge surfaces and a winding support area that has a trapezoidal cross-section. The arrangement further includes a coil winding, and a winding body configured to arrange the coil winding on one of the plurality of teeth. The coil winding has an inner area arranged opposite the first wedge surfaces and represents second wedge surfaces. The arrangement further includes a stop means disposed on the winding body and/or one of the plurality of teeth. The stop means is configured to limit movement of the winding body in a direction toward the yoke. The arrangement further includes a centering means configured to center the winding body on one of the plurality of teeth.Type: ApplicationFiled: July 24, 2008Publication date: July 30, 2009Applicant: ZF Friedrichshafen AGInventors: Marcus van Heyden, Alexander Gehring, Ralf Ronnebeck, Florian Leberfinger, Frank Kewes
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Publication number: 20070279178Abstract: A winding body for holding a winding of an electrical conductor to produce a coil for an electrical machine includes a winding area formed by a winding support and two sidepieces connected to the winding support. The sidepieces form the boundaries of the winding area and are connected to the winding support. Various measures are proposed for mounting a compact winding on the winding body, for arranging the winding body without play and in an operationally reliable manner on a tooth of an electrical machine, and for wiring several coils together in a space-saving manner by using the winding body.Type: ApplicationFiled: May 11, 2007Publication date: December 6, 2007Inventors: Manfred Zimmer, Ralf Ronnebeck, Alexander Gehring
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Patent number: 7143879Abstract: A torsional vibration damper for a piston-equipped bridging clutch of a hydrodynamic clutch device includes a drive-side transmitting element for at least one damping unit, which is in working connection by way of a transmitting element on the power takeoff-side with a power takeoff component assigned to it, where at least one angle of rotation limiter is assigned to the damping unit. At least one projection is provided on one of the transmitting elements, this projection extending toward the other transmitting element and engaging in an assigned recess in the other transmitting element with predetermined play in the axial direction to form an angle of rotation limiter, where the recess is provided with an appropriate circumferential dimension for the projection to ensure the possibility of a predetermined relative deflection between the two transmitting elements.Type: GrantFiled: October 27, 2004Date of Patent: December 5, 2006Assignee: ZF Friedrichshafen AGInventors: Jürgen Ackermann, Peter Frey, Ralf Rönnebeck, Christoph Sasse, Erwin Wack, Frank Zerner
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Patent number: 7073646Abstract: A torsional vibration damper on the bridging clutch of a hydrodynamic clutch arrangement has a first connecting device, which can be brought into working connection with the clutch housing and with a drive-side transmission element. The drive-side transmission element is connected via first energy-storage devices to an intermediate transmission element. The torsional vibration damper also has a second connecting device for establishing a working connection via second energy-storage devices between the intermediate transmission element and a takeoff-side transmission element, which is connected to a takeoff-side component of the hydrodynamic clutch arrangement. The intermediate transmission element accepts a mass element, located operatively between the two connecting devices.Type: GrantFiled: April 2, 2004Date of Patent: July 11, 2006Assignee: ZF Sachs AGInventors: Christoph Sasse, Jörg Sudau, Ralf Rönnebeck, Jürgen Ackermann, Peter Frey, Erwin Wack, Frank Zerner
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Patent number: 6915886Abstract: A bridging clutch is installed in a fluid medium-filled housing of a hydrodynamic coupling device located between a drive shaft and a transmission input shaft, the coupling device also containing a pump wheel and a turbine wheel. The bridging clutch is provided with a piston, which, when moved into a first axial position, brings at least one friction element into working connection with at least one friction surface, and when moved into a second axial position, at least partially releases this working connection, and with a torsional vibration damper, which is designed with at least one drive element and with at least one takeoff element, at least one of which has openings for circumferential springs and actuating areas for these springs. At least one of the takeoff elements acts a carrier element for the turbine wheel, which is held otherwise without radial support in the housing.Type: GrantFiled: September 11, 2003Date of Patent: July 12, 2005Assignee: ZF Sachs AGInventors: Jürgen Dacho, Peter Frey, Ralf Rönnebeck, Georg Mencher, Bernd Schöder, Horst Breier, Hermann Schleicher
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Publication number: 20050115788Abstract: A torsional vibration damper for a piston-equipped bridging clutch of a hydrodynamic clutch device includes a drive-side transmitting element for at least one damping unit, which is in working connection by way of a transmitting element on the power takeoff-side with a power takeoff component assigned to it, where at least one angle of rotation limiter is assigned to the damping unit. At least one projection is provided on one of the transmitting elements, this projection extending toward the other transmitting element and engaging in an assigned recess in the other transmitting element with predetermined play in the axial direction to form an angle of rotation limiter, where the recess is provided with an appropriate circumferential dimension for the projection to ensure the possibility of a predetermined relative deflection between the two transmitting elements.Type: ApplicationFiled: October 27, 2004Publication date: June 2, 2005Inventors: Jurgen Ackermann, Peter Frey, Ralf Ronnebeck, Christoph Sasse, Erwin Wack, Frank Zerner
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Patent number: 6837348Abstract: A hydrodynamic clutch device for a hydrodynamic torque converter includes a turbine wheel for rotation about an axis of rotation. The turbine wheel is connected by a lockup clutch arrangement for transmitting torque to a housing arrangement. The turbine wheel includes a turbine wheel shell for housing turbine wheel blades. The turbine wheel shell is operably connected by a torsional vibration damper arrangement for transmitting torque. The torsional vibration damper arrangement includes a first transmission element coupled with the lockup clutch arrangement and the turbine wheel shell and includes a second transmission element coupled with the first transmission element for transmitting torque by means of a damper element arrangement; and wherein the first transmission element is supported at the housing arrangement in a first direction by a bearing arrangement.Type: GrantFiled: March 5, 2003Date of Patent: January 4, 2005Assignee: ZF Sachs AGInventors: Horst Breier, Georg Mencher, Thomas Bauer, Ralf Rönnebeck, Jürgen Dacho, Peter Frey, Bernd Schöder
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Patent number: 6832672Abstract: A hydraulic clutch has an impeller wheel, a turbine wheel with a turbine wheel shell, a turbine torsional vibration damper and a lockup clutch. The turbine wheel shell receives a connection element with which it acts on the torsional vibration damper. The lockup clutch has at least one clutch disk arranged at a disk carrier. The turbine wheel shell is connected on the radial inner side with the connection element. The disk carrier passes into a holding clamp which is connected to the turbine wheel shell in a radially eccentric manner. The disk carrier is connected with the connection element so as to be fixed with respect to rotation relative to it.Type: GrantFiled: October 15, 2002Date of Patent: December 21, 2004Assignee: ZF Sachs AGInventors: Thomas Bauer, Peter Frey, Ralf Rönnebeck
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Publication number: 20040226794Abstract: A torsional vibration damper on the bridging clutch of a hydrodynamic clutch arrangement has a first connecting device, which can be brought into working connection with the clutch housing and with a drive-side transmission element. The drive-side transmission element is connected via first energy-storage devices to an intermediate transmission element. The torsional vibration damper also has a second connecting device for establishing a working connection via second energy-storage devices between the intermediate transmission element and a takeoff-side transmission element, which is connected to a takeoff-side component of the hydrodynamic clutch arrangement. The intermediate transmission element accepts a mass element, located operatively between the two connecting devices.Type: ApplicationFiled: April 2, 2004Publication date: November 18, 2004Applicant: ZF Sachs AGInventors: Christoph Sasse, Jorg Sudau, Ralf Ronnebeck, Jurgen Ackermann, Peter Frey, Erwin Wack, Frank Zerner
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Patent number: 6758315Abstract: A hydraulic clutch has an impeller wheel, a turbine wheel with a turbine wheel shell, and a torsional vibration damper. The turbine wheel is drivable by the impeller wheel. The turbine wheel shell is mounted in an axial and radial sliding bearing so as to be rotatable with respect to a turbine wheel hub. The torsional vibration damper is arranged on the turbine wheel hub so as to be fixed with respect to rotation relative to it. The turbine wheel hub is drivable by the turbine wheel via the turbine wheel shell and the torsional vibration damper. The turbine wheel shell acts on the torsional vibration damper via a connection element. The axial sliding bearing is spatially offset with respect to the radial sliding bearing.Type: GrantFiled: October 15, 2002Date of Patent: July 6, 2004Assignee: ZF Sachs AGInventors: Thomas Bauer, Peter Frey, Ralf Ronnebeck
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Patent number: 6725988Abstract: A hydrodynamic clutch device, particularly a hydrodynamic torque converter or fluid coupling, comprises a housing arrangement, a turbine wheel which is arranged in the housing arrangement so as to be rotatable with respect to the housing arrangement about an axis of rotation, a lockup clutch arrangement by means of which a torque-transmitting connection can be selectively produced between the housing arrangement and the turbine wheel, wherein the lockup clutch arrangement comprises a clutch element which is connected by a connection arrangement to the housing arrangement so as to be substantially fixed with respect to rotation but axially displaceable relative to it, wherein the connection arrangement comprises at least one elastically deformable connection element which is fixedly connected with the housing arrangement on the one hand and with the clutch element on the other hand.Type: GrantFiled: October 3, 2002Date of Patent: April 27, 2004Assignee: Mannesmann Sachs AGInventors: Thomas Bauer, Peter Frey, Rüdiger Hinkel, Sven Koepke, Ralf Rönnebeck
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Publication number: 20040060793Abstract: A bridging clutch is installed in a fluid medium-filled housing of a hydrodynamic coupling device located between a drive shaft and a transmission input shaft, the coupling device also containing a pump wheel and a turbine wheel. The bridging clutch is provided with a piston, which, when moved into a first axial position, brings at least one friction element into working connection with at least one friction surface, and, when moved into a second axial position, at least partially releases this working connection, and with a torsional vibration damper, which is designed with at least one drive element and with at least one takeoff element, at least one of which has openings for circumferential springs and actuating areas for these springs. At least one of the takeoff elements acts a carrier element for the turbine wheel, which is held otherwise without radial support in the housing.Type: ApplicationFiled: September 11, 2003Publication date: April 1, 2004Applicant: ZF Sachs AGInventors: Jurgen Dacho, Peter Frey, Ralf Ronnebeck, Georg Mencher, Bernd Schoder, Horst Breier, Hermann Schleicher