Patents by Inventor Oswald Friedmann

Oswald Friedmann 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).

  • Patent number: 7686147
    Abstract: A torque transmitting device in a drive train of a motor vehicle to transmit torque between an internal combustion engine having a drive shaft and a transmission having coaxial input shafts. The transmission input shafts are non-rotatably connected with a respective clutch disc having friction linings. An intermediate pressure plate is positioned between the friction linings of the clutch discs and is non-rotatably connected to the engine drive shaft. The friction linings of the clutch discs are between the intermediate pressure plate and respective axially movable clutch pressure plates that are actuated by an actuation device. To provide support for the double clutch unit the intermediate pressure plate is radially mounted on one of the two transmission input shafts.
    Type: Grant
    Filed: August 20, 2005
    Date of Patent: March 30, 2010
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Publication number: 20090205923
    Abstract: A clutch unit including a torsional vibration damper and having at least friction clutch, but can have two friction clutches combined into a twin clutch. The torsional vibration damper includes an input component that extends axially over the at least one friction clutch at the outer circumference of the friction clutch, so that a counterpressure plate of the at least one friction clutch is disposed axially between the drive engine and energy accumulators carried by the torsional vibration damper. Thus, the clutch unit has a smaller axial extent and can be accommodated in limited installation spaces.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 20, 2009
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Patent number: 7566286
    Abstract: A power shift gear for motor vehicles with a first subgear that has a first planetary gear. The first planetary gear has at least one sun wheel, at least one ring gear, several planet wheels and at least one planet carrier. The at least one sun wheel has a toothing for engagement in toothings of planet wheels and with several speed clutches for the engagement and disengagement of speeds in the first subgear. The power shift gear includes a second subgear with several speed clutches for the engagement and disengagement of speeds in the second subgear. The second subgear is connected parallel to the first subgear. The speed clutches for the first subgear are arranged radially outside the toothing of at least one sun wheel of the first subgear.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: July 28, 2009
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Jeffrey Hemphill, Philip George, William Brees, Geir Huseby, Oswald Friedmann
  • Publication number: 20090145679
    Abstract: A method for controlling the operation of a generator connected to an electrical energy storage unit in a vehicle power train. An engine is connected to a drive shaft of the vehicle through a transmission and with an interrupting device with which the transmission of torque from the engine to the drive shaft is interruptible. When the transmission of torque between the engine and the drive shaft is interrupted the generator is driven from the drive shaft.
    Type: Application
    Filed: November 29, 2008
    Publication date: June 11, 2009
    Applicant: LuK Lamellen und Kupplungsbau Beteilligungs KG
    Inventors: Emmanuel Simon, Oswald Friedmann, Christian Lauinger
  • Publication number: 20090103846
    Abstract: A decoupling device for the bearing arrangement of a shaft carried in a housing, in particular a shaft of a belt-driven conical-pulley transmission with a chain that functions as the belt. The decoupling device includes an outer bearing ring configured with a circularly cylindrical outer surface and within which the shaft is mounted, and an inner surface of a housing that encloses the bearing ring outer surface. At least one radial ondular washer is arranged between the bearing ring outer surface and the housing inner surface, which allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface by elastic deformation of the washer.
    Type: Application
    Filed: December 11, 2008
    Publication date: April 23, 2009
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Hartmut Faust, Oswald Friedmann, Andre Linnenbrugger, Ronald Glas, Christian Bauer, Hans-Walter Wodtke
  • Patent number: 7478952
    Abstract: A decoupling device for the bearing arrangement of a shaft carried in a housing, in particular a shaft of a belt-driven conical-pulley transmission with a chain that functions as the belt. The decoupling device includes an outer bearing ring configured with a circularly cylindrical outer surface and within which the shaft is mounted, and an inner surface of a housing that encloses the bearing ring outer surface. At least one radial ondular washer is arranged between the bearing ring outer surface and the housing inner surface, which allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface by elastic deformation of the washer.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: January 20, 2009
    Assignee: LuK Lamellen und Kupplungsbau Betelligungs KG
    Inventors: Hartmut Faust, Oswald Friedmann, André Linnenbrügger, Ronald Glas, Christian Bauer, Hans-Walter Wodtke
  • Publication number: 20080230342
    Abstract: A torque transmitting device in a drive train of a motor vehicle to transmit torque between an internal combustion engine having a drive shaft and a transmission having coaxial input shafts. The transmission input shafts are each non-rotatably connected with a respective clutch disc having friction linings. An intermediate pressure plate is positioned between the friction linings of the clutch discs and is non-rotatably connected to the engine drive shaft. The friction linings of the clutch discs are between the intermediate pressure plate and respective axially movable clutch pressure plates that are actuated by an actuation device. To provide support for the double clutch unit the intermediate pressure plate is radially mounted on one of the two transmission input shafts.
    Type: Application
    Filed: March 27, 2008
    Publication date: September 25, 2008
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Patent number: 7361108
    Abstract: A continuously variable transmission with two conical disk pairs on the input side and two conical disk pairs on the output-side that are connected with each another by two parallel endless torque-transmitting members in a drive mechanism. In one form of the transmission an asymmetrical cone angle on the conical disks enables the installation space to be reduced.
    Type: Grant
    Filed: March 13, 2004
    Date of Patent: April 22, 2008
    Assignee: LuK Lamellen und Kupplungsbau Beteillgungs KG
    Inventors: Wolfgang Haas, Oswald Friedmann
  • Patent number: 7341524
    Abstract: A torsional vibration damper, particularly for use between the engine and the transmission of the power train in a motor vehicle, including two flywheels rotatable relative to each other against the opposition of a first energy storing device employing, for example, one or more coil springs and a second energy storing device, which is carried by one of the flywheels, which operates in parallel with the first energy storing device and which opposes rotation of the two flywheels relative to each other.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: March 11, 2008
    Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Publication number: 20080045367
    Abstract: A transmission for coupling a starter-generator electrical machine to an internal combustion engine and having a transmission ratio that is a function of the rotational speed of the internal combustion engine. The ratio of the rotational speed of the electrical machine to that of the internal combustion engine can be increased at a lower rotational speed of the internal combustion engine than at a higher rotational speed of the internal combustion engine. A control device is provided for switching the transmission ratio, which is held by means of spring force in a condition in which the ratio of rotational speeds is high, and as the rotational speed of the internal combustion engine rises increases the transmission ratio is switched to a condition in which the ratio of rotational speeds is lower.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 21, 2008
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Peter Greb, Oswald Friedmann
  • Publication number: 20080014107
    Abstract: A positive-displacement pump having an eccentrically positioned internal ring gear and pinion within a pump housing. Pressurized operating fluid is provided by the pump to actuate an actuation piston of a clutch unit, such as a double clutch unit. The clutch unit is drivingly coupled with the pump for movement between engaged and disengaged positions. At least one throughbore is provided in the pump housing within which throughbore the clutch actuation piston is guided.
    Type: Application
    Filed: June 23, 2007
    Publication date: January 17, 2008
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Marco Grethel, Oswald Friedmann, Christoph Vetter, Eric Muller
  • Patent number: 7261665
    Abstract: The invention relates to a transmission arrangement, particularly for a motor vehicle, comprising at least one set of planetary gears and at least one dry clutch or a dry transmission brake. The inventive transmission arrangement allows advantages of the automatic transmission to be combined with the energy-saving clutches and transmission brakes.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: August 28, 2007
    Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Peter Tenberge, Wolfgang Reik
  • Patent number: 7207232
    Abstract: A continuously variable transmission including a drive element rotatable about a drive axis, an output element rotatable about an output axis parallel to the drive axis, and an adjusting mechanism with which the drive axis and the output axis can be laterally offset from each other. Coupling elements operate between the drive element and the output element and are spaced from each other in the peripheral direction of the drive element and output element for transmitting torque between the elements. The coupling elements change the movement of a peripheral region of the drive element faster than that of the output element so that forces acting on the coupling elements from the drive element and the output element lie substantially in a common plane that extends perpendicularly to the axes of rotation. The continuously variable transmission can be incorporated into a transfer case for an all-wheel drive system.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: April 24, 2007
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Publication number: 20070080513
    Abstract: A device for modifying the wheel camber of a wheel (1) on a motor vehicle is provided, in which the heel (1) is pivotally mounted to a wheel carrier (5, 51) by a pivot bearing (4, 50). A pivoting plane is defined by the pivot bearing (4, 50) which extends in an approximately transverse manner to a central plane (E) of the wheel, the position of a virtual center of rotation (D) of the pivot bearing (4, 50) lying above the wheel contact plane and on a side of the central plane (E) of the wheel that faces toward the vehicle.
    Type: Application
    Filed: August 25, 2004
    Publication date: April 12, 2007
    Inventors: Jurgen Osterlanger, Manfred Kraus, Ulrich Grau, Ivo Agner, Oswald Friedmann, Dirk Eifler, Wolfgang Hill, Manuel Metzinger
  • Publication number: 20060289263
    Abstract: The invention concerns a torque transmission device in the drive train of a motor vehicle to transmit torque between a drive unit, especially an internal combustion engine, with a drive shaft, especially a crankshaft, and a transmission with at least two transmission input shafts that are tightly connected to a clutch disc having a friction lining, and there is an intermediate pressure plate between the friction lining of one clutch disc and the friction lining of the other clutch disc that is tightly connected to the drive shaft of the drive unit, whereby the friction lining of the clutch discs are between the intermediate pressure plate and the pressure plates that move axially with the assistance of an actuation device relative to the intermediate pressure plate in reference to the transmission input shafts in order to hold the friction linings between the intermediate pressure plate and the pressure plates.
    Type: Application
    Filed: August 20, 2005
    Publication date: December 28, 2006
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Patent number: 7147092
    Abstract: A multiple clutch unit for a power train. The clutch includes a first clutch, particularly a multiple-disk clutch that is non-rotatably connected to a first shaft. A second clutch, particularly a multiple-disk clutch, is non-rotatably connected to a second shaft and is arranged coaxially with the first clutch. The clutches can be actuated by means of piston/cylinder units, particularly hydraulically. The piston/cylinder unit associated with the first clutch includes a substantially cup-shaped cylinder that is connected to and cooperates with the first shaft in a non-rotatable but axially movable manner.
    Type: Grant
    Filed: April 3, 2004
    Date of Patent: December 12, 2006
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Patent number: 7124871
    Abstract: A lever system for actuating a clutch or a brake for a vehicle, such as a motor vehicle. The actuating force for the clutch or transmission brake is changeable by displacing a fulcrum with respect to a lever. An energy storage mechanism may act at one end portion of the lever and a pressure plate of a clutch or a transmission brake may act, directly or indirectly, on the other end portion.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: October 24, 2006
    Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Wolfgang Reik, Dirk Burkhart, Wolfgang Haas, Christian Scheufler, Laszlo Man, Christoph Raber, Dirk Reimnitz, Markus Schaefer
  • Patent number: 7108626
    Abstract: A drive assembly for a motor vehicle having a stepless transmission including a driven input shaft coupled to an engine and at least one output shaft. The input and output shafts are drivingly connected through an eccentric drive provided on the input shaft. A freewheel system is provided on the output shaft. The eccentric drive and the freewheel system are interconnected by at least one connecting element. An electrical machine is selectively connected through coupling elements to the input shaft of the transmission, to the engine, or simultaneously to the input shaft and to the engine.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: September 19, 2006
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Publication number: 20060079368
    Abstract: This invention relates to a power shift gear for motor vehicles with a first subgear that has a first planetary gear, where this first planetary gear has at least one sun wheel, at least one ring gear, several planet wheels and at least one planet carrier, whereby at least one sun wheel has a toothing for engagement in toothings of planet wheels and with several speed clutches for the engagement and disengagement of speeds in the first subgear, and with a second subgear, and with several speed clutches for the engagement and disengagement of speeds in the second subgear, whereby the second subgear is connected parallel to the first subgear and where at least all speed clutches for the engagement an disengagement of speeds in the first subgear are arranged radially outside that toothing of at least one sun wheel of this first subgear as well as a motor vehicle gear and a motor vehicle power train.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 13, 2006
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Jeffrey Hemphill, Philip George, William Brees, Geir Huseby, Oswald Friedmann
  • Publication number: 20050232525
    Abstract: Disclosed is a decoupling device for mounting a shaft, particularly the shaft of a spherical-disk-shaped enveloping gear operating with a chain as an enveloping means, on a base. The inventive decoupling device comprises an outer bearing ring which has a circular cylindrical outer surface and inside which the shaft is mounted, and an inner surface which is rigidly connected to the base and surrounds the outer surface. At least one radial ondular washer is disposed between the outer surface and the inner surface. Said radial ondular washer allows the inner surface and the outer surface to be radially moved relative to each other to a limited degree while being elastically deformed.
    Type: Application
    Filed: February 25, 2003
    Publication date: October 20, 2005
    Inventors: Hartmut Faust, Oswald Friedmann, Andre Linnenbrugger, Ronald Glas, Christian Bauer, Hans-Walter Wodtke