Patents by Inventor Jochen Kuhstrebe
Jochen Kuhstrebe 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: 9328767Abstract: A bearing assembly includes first and second rolling-element bearings each having an inner ring with a running surface for rolling elements and a guide flange that extends radially outwardly beyond the running surface for limiting axial movement of the rolling elements. The inner rings are configured such that they are in contact with each other exclusively within a contact surface diameter that is smaller than an average value of a maximum diameter of the running surface of one of the inner rings and a maximum outer diameter of that inner ring. The guide flanges are disposed on sides of the inner ring of the first rolling-element bearing and of the second rolling-element bearing that face each other axially.Type: GrantFiled: October 22, 2014Date of Patent: May 3, 2016Assignee: AKTIEBOLAGET SKFInventors: Katrin Hofmann, Jochen Kuhstrebe, Armin Olschewski, Arno Stubenrauch, Malinipriya Thangavelu
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Publication number: 20150139584Abstract: A bearing assembly includes first and second rolling-element bearings each having an inner ring with a running surface for rolling elements and a guide flange that extends radially outwardly beyond the running surface for limiting axial movement of the rolling elements. The inner rings are configured such that they are in contact with each other exclusively within a contact surface diameter that is smaller than an average value of a maximum diameter of the running surface of one of the inner rings and a maximum outer diameter of that inner ring. The guide flanges are disposed on sides of the inner ring of the first rolling-element bearing and of the second rolling-element bearing that face each other axially.Type: ApplicationFiled: October 22, 2014Publication date: May 21, 2015Applicant: AKTIEBOLAGET SKFInventors: Katrin Hofmann, Jochen Kuhstrebe, Armin Olschewski, Arno Stubenrauch, Malinipriya Thangavelu
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Patent number: 7287443Abstract: A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.Type: GrantFiled: June 1, 2005Date of Patent: October 30, 2007Assignee: Volkswagen AGInventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jürgen Schneider, Wolfgang Kundermann, Jörg Sudau, Thomas John, Thomas Strasser
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Patent number: 7207922Abstract: A power train for a motor vehicle is configured with a control unit operable to increase or decrease the flow of operating fluid as a function of the instantaneous demand for the supply of the operating fluid to at least one of multiple clutch arrangements in such a way that the control unit decreases or interrupts the flow of operating fluid when the supply demand is low and increases the flow of operating fluid unit when the supply demand is high.Type: GrantFiled: June 1, 2005Date of Patent: April 24, 2007Assignee: Volkswagen AGInventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jürgen Schneider, Wolfgang Kundermann, Jörg Sudau, Thomas John, Thomas Strasser
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Patent number: 7107870Abstract: A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.Type: GrantFiled: June 1, 2005Date of Patent: September 19, 2006Assignee: ZF Sachs AGInventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jürgen Schneider, Wolfgang Kundermann, Jörg Sudau, Thomas John, Thomas Strasser
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Patent number: 7097584Abstract: A dual clutch gearbox for a motor vehicle comprising a first gearbox input shaft (20) with which at least one first gear is associated, and a second gearbox input shaft (22) with which at least one second gear is associated. An outer gearbox input shaft (22) embodied as a hollow shaft surrounds an inner gearbox input shaft (20), and a synchronization device is provided inside the gearbox.Type: GrantFiled: March 28, 2003Date of Patent: August 29, 2006Assignee: ZF Friedrichshafen AGInventor: Jochen Kuhstrebe
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Publication number: 20060037422Abstract: A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.Type: ApplicationFiled: June 1, 2005Publication date: February 23, 2006Inventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jurgen Schneider, Wolfgang Kundermann, Jorg Sudau, Thomas John, Thomas Strasser
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Publication number: 20050288149Abstract: A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.Type: ApplicationFiled: June 1, 2005Publication date: December 29, 2005Inventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-jurgen Schneider, Wolfgang Kundermann, Jorg Sudau, Thomas John, Thomas Strasser
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Publication number: 20050261108Abstract: A power train for a motor vehicle is configured with a control unit operable to increase or decrease the flow of operating fluid as a function of the instantaneous demand for the supply of the operating fluid to at least one of multiple clutch arrangements in such a way that the control unit decreases or interrupts the flow of operating fluid when the supply demand is low and increases the flow of operating fluid unit when the supply demand is high.Type: ApplicationFiled: June 1, 2005Publication date: November 24, 2005Inventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jurgen Schneider, Wolfgang Kundermann, Jorg Sudau, Thomas John, Thomas Strasser
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Publication number: 20050221943Abstract: A dual clutch gearbox for a motor vehicle comprising a first gearbox input shaft (20) with which at least one first gear is associated, and a second gearbox input shaft (22) with which at least one second gear is associated. An outer gearbox input shaft (22) embodied as a hollow shaft surrounds an inner gearbox input shaft (20), and a synchronization device is provided inside the gearbox.Type: ApplicationFiled: March 28, 2003Publication date: October 6, 2005Inventor: Jochen Kuhstrebe
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Patent number: 6951526Abstract: A power train for a motor vehicle includes a drive unit, a gearbox having first and second input shafts, and a clutch having first and second multi-disk clutch arrangements assigned to respective input shafts for transferring torque between the drive unit and the gearbox. An operating fluid, especially a cooling oil, is supplied to the clutch arrangements for operation under action of the fluid. An actuator arrangement is assigned to the gearbox for engaging and disengaging gears assigned to the first and second input shafts, and a control unit controls the actuator arrangement so that at least one gear is automatically engaged when the clutch is released.Type: GrantFiled: December 21, 2001Date of Patent: October 4, 2005Assignee: ZF Sachs AGInventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-Jürgen Schneider, Wolfgang Kundermann, Jörg Sudau, John Thomas, Thomas Strasser
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Patent number: 6889811Abstract: A clutch system includes a clutch device for positioning in a drive train between a drive unit and a transmission, and an actuating unit for hydraulically actuating the clutch device by means of at least one hydraulic slave-cylinder. The actuating unit has a hydraulic-medium delivery device for delivering a pressurized hydraulic medium, and a valve assembly, whose mediation allows the hydraulic medium to be supplied to and discharged from the slave-cylinder. The valve assembly comprises at least one supply valve, located in a hydraulic connection, between the hydraulic-medium delivery device and the slave-cylinder and at least one discharge valve, which is separate from the supply valve and located in a hydraulic connection, between the slave-cylinder and a hydraulic-medium reservoir.Type: GrantFiled: January 22, 2002Date of Patent: May 10, 2005Assignee: ZF Sachs AGInventors: Angelika Ebert, Jochen Kuhstrebe, Thomas Busold
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Patent number: 6881171Abstract: In either a pull-mode operating state or a push-mode operating state, a clutch arrangement assigned to the first gearbox input shaft and a clutch arrangement assigned to the second gearbox input shaft are actuated in such a way and a torque-generating arrangement comprising a drive unit is controlled in such a way that, when a shift is to be made between a first gear assigned to a first gearbox input shaft and a second gear assigned to a second gearbox input shaft, at least one of the following criteria with respect to the shifting sequence comprising the shift in question is fulfilled: (1) during the shifting sequence, the torque present at the gearbox output shaft is at least approximately constant or changes monotonically; (2) during the shifting sequence, the vehicle accelerates in an essentially monotonically increasing or in an essentially monotonically decreasing manner.Type: GrantFiled: December 21, 2001Date of Patent: April 19, 2005Assignee: ZF Sachs AGInventors: Jochen Kuhstrebe, Thomas John, Rainer Reuthal, Thomas Strasser
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Patent number: 6860373Abstract: A rotary driving insertion connection, particularly for transmitting torque in a drivetrain of a motor vehicle between components or units of the drivetrain which are connected or are to be brought into a connection for transmitting torque, comprises a primary-side coupling area at a first component and a secondary-side coupling area at a second component. One of the coupling areas has a cutout which is defined by an inner circumference or at least an inner circumferential portion, and the other coupling area has at least one projecting portion having an outer circumference or at least an outer circumferential portion which is inserted or can be inserted into the cutout axially with reference to an axis of rotation in order to provide a positive rotary driving engagement between the inner circumference and the outer circumference. A plurality of coupling elements producing the positive rotary driving engagement is provided between the inner circumference and the outer circumference.Type: GrantFiled: February 12, 2003Date of Patent: March 1, 2005Assignee: ZF Sachs AGInventors: Wolfgang Kundermann, Jochen Kuhstrebe, Wolfgang Reisser
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Patent number: 6827191Abstract: A control unit associated with the cooling fluid supply switches the flow of cooling fluid on or off by controlling the cooling fluid supply in the course of a respective shifting process in which the transmission is shifted up from a lower gear to a higher gear or in down from a higher gear to a lower gear to deliberately exert inertial forces on at least one of the plate carriers by means of the flow of cooling fluid and, therefore, to act on this plate carrier in an accelerating or decelerating manner or in order to deliberately prevent inertial forces of this type being exerted on at least one of the plate carriers by the flow of cooling fluid.Type: GrantFiled: December 12, 2002Date of Patent: December 7, 2004Assignee: ZF Sachs AGInventor: Jochen Kuhstrebe
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Patent number: 6814205Abstract: A dual clutch arrangement including two clutch areas, each with a pressure plate connected to a housing arrangement for rotation in common around an axis of rotation (A) and which can be shifted in the axial direction with respect to the housing; and a clutch disk, the friction surface areas of which can be clamped between the respective pressure plate and an opposing support arrangement. Each of the clutch disks is designed to be connected nonrotatably to a different power takeoff element. In addition a clutch cooling arrangement, through which a coolant can flow, is installed adjacent to the clutch areas.Type: GrantFiled: October 7, 2002Date of Patent: November 9, 2004Assignee: ZF Sachs AGInventors: Reinhard Feldhaus, Markus Heiartz, Andreas Orlamünder, Jochen Kuhstrebe, Wolfgang Reisser, Thomas Wirth, Michael Peterseim, Jürgen Dudenhöffer, Manfred Zimmer
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Patent number: 6789658Abstract: A clutch system includes a clutch device with at least one clutch arrangement for installation in a motor vehicle drive train between a drive unit and a transmission. The at least one clutch arrangement is actuated by a slave cylinder using a pressure medium which is supplied to the clutch device by a first pump. A further medium is also supplied to the clutch device by a second pump arrangement as an operating medium used during operation of the clutch device. The further medium is selectively supplied as a pressure medium to the slave cylinder.Type: GrantFiled: September 9, 2002Date of Patent: September 14, 2004Assignee: ZF Sachs AGInventors: Thomas Busold, Hans-Jürgen Schneider, Rainer Brand, Wolfgang Reisser, Olaf Moseler, Jochen Kuhstrebe, Wolfgang Grosspietsch, Axel Rohm, Thomas John, Thomas Wirth
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Publication number: 20040112171Abstract: The invention relates to measures for controlling or reducing drag torque occurring in a multi-plate clutch device (202) due to temperature-related increased viscosity of an operating fluid which is supplied to the plates in operation. The aim of the invention is to enable a motor vehicle to be started or operated even at low temperatures. According to one aspect of the invention, a motor vehicle comprising a drive train is especially provided. Said drive train comprises a drive unit (238), gearbox (330) having a first gearbox input shaft and a second gearbox input shaft, and a clutch (202) having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. Said clutch devices are embodied in the form of plate clutches to which an operating fluid can be supplied, especially a cooling oil in order to operate the same.Type: ApplicationFiled: July 14, 2003Publication date: June 17, 2004Inventors: Jochen Kuhstrebe, Olaf Moseler, Axel Rohm, Eduard Steiner, Rainer Reuthal, Hans-J?uuml;rgen Schneider, Wolfgang Kundermann, J?ouml;rg Sudau, John Thomas, Thomas Sulzheim
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Publication number: 20040045784Abstract: The invention relates to a clutch system, comprising a clutch device, in particular for positioning in a drive train between a drive unit and a transmission and comprising an actuating unit (200) for hydraulically actuating the clutch device by means of at least one hydraulic slave-cylinder (202). Said actuating unit has a hydraulic-medium delivery device (210, 212) for delivering a pressurised hydraulic medium and a valve assembly (208, 216), whose mediation allows the hydraulic medium to be supplied to and discharged from the slave-cylinder. According to the invention, the valve assembly comprises at least one supply valve (208), located in a hydraulic connection, between the hydraulic-medium delivery device (210) and the slave-cylinder (202) and at least one discharge valve (216), which is separate from the supply valve and located in a hydraulic connection, between the slave-cylinder (202) and a hydraulic-medium reservoir (218).Type: ApplicationFiled: July 16, 2003Publication date: March 11, 2004Inventors: Angelika Ebert, Jochen Kuhstrebe, Thomas Busold
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Publication number: 20040038776Abstract: In either a pull-mode operating state or a push-mode operating state, a clutch arrangement assigned to the first gearbox input shaft and a clutch arrangement assigned to the second gearbox input shaft are actuated in such a way and a torque-generating arrangement comprising a drive unit is controlled in such a way that, when a shift is to be made between a first gear assigned to a first gearbox input shaft and a second gear assigned to a second gearbox input shaft, at least one of the following criteria with respect to the shifting sequence comprising the shift in question is fulfilled:Type: ApplicationFiled: July 14, 2003Publication date: February 26, 2004Inventors: Jochen Kuhstrebe, Thomas John, Rainer Reuthal, Thomas Strasser