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: 10247258
    Abstract: A friction clutch for a drive train of a motor vehicle driven by an internal combustion engine. The clutch includes a rotatable shaft, a housing, at least one first clutch plate, at least one second clutch plate that is movable axially to a limited extent relative to the at least one first clutch plate to actuate the clutch. An actuating device that has at least one lever that is pivotally-mounted on one of the clutch plates, and at least one bar one end of which is connected to the lever and an opposite end of which is connected by an articulated connection to a different clutch plate to improve the function of the clutch.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: April 2, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Valentin Khomutovskiy, Oswald Friedmann
  • Patent number: 10029554
    Abstract: An axle hybrid drive for a hybrid vehicle (1), including an internal combustion engine (6) drivingly connected to a first vehicle axle (11), and an electric motor (10) drivingly connected to a second vehicle axle (12). The invention is characterized in that the internal combustion engine (6), or a transmission (7) associated with the internal combustion engine (6), is decoupled in terms of a driving force from an output shaft of the first vehicle axle (11).
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: July 24, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Oswald Friedmann
  • Publication number: 20170045097
    Abstract: A friction clutch for a drive train of a motor vehicle driven by an internal combustion engine. The clutch includes a rotatable shaft, a housing, at least one first clutch plate, at least one second clutch plate that is movable axially to a limited extent relative to the at least one first clutch plate to actuate the clutch. An actuating device that has at least one lever that is pivotally-mounted on one of the clutch plates, and at least one bar one end of which is connected to the lever and an opposite end of which is connected by an articulated connection to a different clutch plate to improve the function of the clutch.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 16, 2017
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Valentin KHOMUTOVSKIY, Oswald FRIEDMANN
  • Patent number: 9322441
    Abstract: A clamping element freewheel including an inner ring and an outer ring that can be rotated relative to the inner ring in at least one rotational direction. A cage for clamping elements is between the inner ring and the outer ring, with a plurality of clamping elements. The clamping elements are pivotable between a clamping position, in which they prevent relative rotation between the inner and outer rings, and a release position, in which they enable relative rotation between the inner and outer rings. A clamping element preload is provided to preload the clamping element radially inwardly and in the clamping position direction. The clamping element preloading is provided by springs that are configured separately for each clamping element.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 26, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Oswald Friedmann
  • Patent number: 9216642
    Abstract: The invention relates to an actuator device for torque transmission equipment such as a clutch, e.g. a friction clutch or dog clutch, or a brake, comprising at least two electric motors, wherein the rotors of the electric motors are kinematically coupled together via a summation gear, and the summation gear has an output side which is coupled to an actuator of the torque transmission equipment in such a way that a state of the actuator can be set as a function of a relative rotation between the two rotors.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: December 22, 2015
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventor: Oswald Friedmann
  • Publication number: 20150328972
    Abstract: An axle hybrid drive for a hybrid vehicle (1), including an internal combustion engine (6) drivingly connected to a first vehicle axle (11), and an electric motor (10) drivingly connected to a second vehicle axle (12). The invention is characterized in that the internal combustion engine (6), or a transmission (7) associated with the internal combustion engine (6), is decoupled in terms of a driving force from an output shaft of the first vehicle axle (11).
    Type: Application
    Filed: February 13, 2013
    Publication date: November 19, 2015
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventor: Oswald Friedmann
  • Publication number: 20150167620
    Abstract: An engine for a motor vehicle having an engine housing, a driveshaft for controlling valves of combustion cylinders, the driveshaft driven inside the engine housing, a transmission shaft coupled to the driveshaft and operatively arranged to damp a rotational vibration of the driveshaft, and, a starter coupled to the transmission shaft to direct a start torque into the driveshaft to start the motor vehicle engine. A method for driving a motor vehicle with a motor vehicle engine, the method comprising the steps of providing a starting torque with a starter, directing the starting torque into a driveshaft to start the motor vehicle engine, controlling valves of internal combustion cylinders with the driveshaft, and, damping rotational vibration of the driveshaft with a transmission shaft coupled to the driveshaft, the transmission shaft arranged inside an engine housing of the motor vehicle engine and projecting out of the engine housing.
    Type: Application
    Filed: June 5, 2013
    Publication date: June 18, 2015
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Wolfgang Haas, Oswald Friedmann
  • Publication number: 20150028658
    Abstract: The invention relates to an actuator device for torque transmission equipment such as a clutch, e.g. a friction clutch or dog clutch, or a brake, comprising at least two electric motors, wherein the rotors of the electric motors are kinematically coupled together via a summation gear, and the summation gear has an output side which is coupled to an actuator of the torque transmission equipment in such a way that a state of the actuator can be set as a function of a relative rotation between the two rotors.
    Type: Application
    Filed: February 21, 2013
    Publication date: January 29, 2015
    Inventor: Oswald Friedmann
  • Patent number: 8739758
    Abstract: The invention relates to an internal combustion engine comprising a plurality of subunits which each comprise a crankshaft part, at least one piston being accommodated on a crank of each crankshaft part by means of a connecting rod, wherein at least one first subunit is permanently operated while the internal combustion engine is operating, and at least one additional subunit can be switched off. To switch off a subunit and to disconnect the crankshaft parts from each other, the crankshaft parts of at least one first subunit and an adjacent second subunit that can be switched off are connected to each other in a rotationally locked manner and can move relative to each other with respect to the rotational axes thereof in such a way that a rotational motion applied to the crankshaft part of the second subunit by the crankshaft part of the first subunit is substantially suspended.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: June 3, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Oswald Friedmann
  • Patent number: 8438948
    Abstract: A vehicle drive including a transmission-engine arrangement with two drive units that are operatable independently of each other and include drive shafts arranged in the longitudinal direction of the vehicle, and with two transmission units, a respective one of the drive units forming a partial drive train with one of the transmission units, and a respective clutch device being arranged between the drive units and the transmission units within the partial drive trains. The clutch devices of the two partial drive trains are arranged to be offset relative to each other in the longitudinal direction of the vehicle to be capable of being arranged with an overlap as viewed in the transversal direction of the vehicle.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: May 14, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Oswald Friedmann
  • Patent number: 8327990
    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: Grant
    Filed: February 2, 2009
    Date of Patent: December 11, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Oswald Friedmann
  • Publication number: 20120190492
    Abstract: A twin engine having a powershift transmission in front longitudinal arrangement.
    Type: Application
    Filed: January 26, 2012
    Publication date: July 26, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Oswald Friedmann
  • Patent number: 8210332
    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: Grant
    Filed: June 3, 2011
    Date of Patent: July 3, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Patent number: 8210290
    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: Grant
    Filed: November 29, 2008
    Date of Patent: July 3, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Emmanuel Simon, Oswald Friedmann, Christian Lauinger
  • Publication number: 20110278124
    Abstract: A clamping element freewheel including an inner ring and an outer ring that can be rotated relative to the inner ring in at least one rotational direction. A cage for clamping elements is between the inner ring and the outer ring, with a plurality of clamping elements. The clamping elements are pivotable between a clamping position, in which they prevent relative rotation between the inner and outer rings, and a release position, in which they enable relative rotation between the inner and outer rings. A clamping element preload is provided to preload the clamping element radially inwardly and in the clamping position direction. The clamping element preloading is provided by springs that are configured separately for each clamping element.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 17, 2011
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventor: Oswald Friedmann
  • Patent number: 8052562
    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: Grant
    Filed: August 16, 2007
    Date of Patent: November 8, 2011
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Peter Greb, Oswald Friedmann
  • Publication number: 20110233021
    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: June 3, 2011
    Publication date: September 29, 2011
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Patent number: 7967122
    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: Grant
    Filed: March 27, 2008
    Date of Patent: June 28, 2011
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Oswald Friedmann, Rolf Meinhard
  • Patent number: 7927020
    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: December 11, 2008
    Date of Patent: April 19, 2011
    Assignee: LuK Lamellen und Kupplungsbau Betelligungs KG
    Inventors: Hartmut Faust, Oswald Friedmann, André Linnenbrügger, Ronald Glas, Christian Bauer, Hans-Walter Wodtke
  • Patent number: 7914269
    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: Grant
    Filed: June 23, 2007
    Date of Patent: March 29, 2011
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Marco Grethel, Oswald Friedmann, Christoph Vetter, Eric Müller