Patents by Inventor Friedrich Gerhardt

Friedrich Gerhardt 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: 9829064
    Abstract: A drive train including an internal combustion engine with a crankshaft, and having a spur gear arrangement with at least one transmission input shaft that is coupled to the crankshaft by a friction clutch. A clutch plate within a housing of the friction clutch is connected in a rotationally locked manner to the at least one transmission input shaft and includes a centrifugal force pendulum. To accommodate the centrifugal force pendulum in the drive train in a space saving manner, the centrifugal force pendulum is situated on the at least one transmission input shaft at an axial distance from the clutch plate.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: November 28, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alain Rusch, Steffen Lehmann, Friedrich Gerhardt
  • Publication number: 20140329641
    Abstract: A drive train including an internal combustion engine with a crankshaft, and having a spur gear arrangement with at least one transmission input shaft that is coupled to the crankshaft by a friction clutch. A clutch plate within a housing of the friction clutch is connected in a rotationally locked manner to the at least one transmission input shaft and includes a centrifugal force pendulum. To accommodate the centrifugal force pendulum in the drive train in a space saving manner, the centrifugal force pendulum is situated on the at least one transmission input shaft at an axial distance from the clutch plate.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 6, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Alain Rusch, Steffen Lehmann, Friedrich Gerhardt
  • Patent number: 6601682
    Abstract: A power train between the output shaft of the engine and the input shaft of the transmission in the power train of a motor vehicle has a composite flywheel receiving torque from the output shaft and transmits torque to the input shaft by way of a clutch disc in response to engagement of a friction clutch which is arranged to transmit torque between the clutch disc and the flywheel. The clutch disc has an input section adapted to receive torque from the flywheel and an output section adjacent the mass of a dynamic damper. Transmission of torque between the mass and the clutch disc takes place by way of the coil springs of an oscillation damper and a slip clutch in series with the oscillation damper.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: August 5, 2003
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Stefan Lehmann, Karl-Ludwig Kimmig, Roland Seebacher, Friedrich Gerhardt, Joachim Hoffman, Hermann Langeneckert
  • Patent number: 6382164
    Abstract: The crankshaft of a piston engine is assembled with a vibration damper into a discrete module prior to mounting of such module in axial and/or radial bearings of the housing of the engine. The damper has an input element which rotates with the camshaft and a mass which is angularly movable relative to the input element against the resistance of coil springs. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. Alternatively, the damper can be installed in or on or can constitute a cheek of the crankshaft. The coil springs can operate in parallel with a friction generating device which also opposes rotation of the input element and the mass of the damper relative to each other.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: May 7, 2002
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
  • Publication number: 20020002960
    Abstract: The crankshaft of a piston engine is assembled with a vibration damper into a discrete module prior to mounting of such module in axial and/or radial bearings of the housing of the engine. The damper has an input element which rotates with the camshaft and a mass which is angularly movable relative to the input element against the resistance of coil springs. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. Alternatively, the damper can be installed in or on or can constitute a cheek of the crankshaft. The coil springs can operate in parallel with a friction generating device which also opposes rotation of the input element and the mass of the damper relative to each other.
    Type: Application
    Filed: September 12, 2001
    Publication date: January 10, 2002
    Applicant: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
  • Patent number: 6308678
    Abstract: The crankshaft of a piston engine is assembled with a vibration damper into a discrete module prior to mounting of such module in axial and/or radial bearings of the housing of the engine. The damper has an input element which rotates with the crankshaft and a mass which is angularly movable relative to the input element against the resistance of coil springs. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. Alternatively, the damper can be installed in or on or can constitute a cheek of the crankshaft. The coil springs can operate in parallel with a friction generating device which also opposes rotation of the input element and the mass of the damper relative to each other.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: October 30, 2001
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
  • Publication number: 20010032769
    Abstract: A power train between the output shaft of the engine and the input shaft of the transmission in the power train of a motor vehicle has a composite flywheel receiving torque from the output shaft and transmits torque to the input shaft by way of a clutch disc in response to engagement of a friction clutch which is arranged to transmit torque between the clutch disc and the flywheel. The clutch disc has an input section adapted to receive torque from the flywheel and an output section adjacent the mass of a dynamic damper. Transmission of torque between the mass and the clutch disc takes place by way of the coil springs of an oscillation damper and a slip clutch in series with the oscillation damper.
    Type: Application
    Filed: April 18, 2001
    Publication date: October 25, 2001
    Applicant: LuK Lamellen und Kupplungsbau Gmbh
    Inventors: Steffen Lehmann, Karl-Ludwig Kimmig, Roland Seebacher, Friedrich Gerhardt, Joachim Hoffman, Hermann Langeneckert
  • Patent number: 6270436
    Abstract: A continuously variable drive mechanism has a variator with two conical disks, at least one of the conical disks being axially movable, a belt running at a variable running radius axially between the conical disks, and a disk-tightening device pushing the axially movable conical disk against the other of the two conical disks, thereby applying axial pressure to the flexible torque-transmitting device. The disk-tightening device works with guiding means converting a rotational displacement into an axial displacement.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: August 7, 2001
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Reik, Ruben Schmitt, Wolfgang Haas, Friedrich Gerhardt
  • Patent number: 6142115
    Abstract: The crankshaft of a piston engine is assembled with a vibration damper into a discrete module prior to mounting of such module in axial and/or radial bearings of the housing of the engine. The damper has an input element which rotates with the camshaft and a mass which is angularly movable relative to the input element against the resistance of coil springs. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. Alternatively, the damper can be installed in or on or can constitute a cheek of the crankshaft. The coil springs can operate in parallel with a friction generating device which also opposes rotation of the input element and the mass of the damper relative to each other.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: November 7, 2000
    Assignee: Luk Lamellen und Kupplungsbau, GmbH
    Inventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
  • Patent number: 6048284
    Abstract: A pulley which can be driven by the output element of the engine in a motor vehicle to transmit torque to one or more endless belts or chains has a rotary input member, a rotary output member and a damper which yieldably opposes rotation of the input and output members relative to each other about a common axis and is at least partially confined in an annular chamber defined by at least one of the input and output members. The chamber can further receive a friction bearing which operates between the input and output members, as well as a vibration absorbing device. Such device can have a mass which is adjacent a flange of one of the input and output members and one or more energy storing elements acting in the circumferential direction of the pulley.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 11, 2000
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Friedrich Gerhardt, Peter Klein, Heinz Molt, Joachim Hoffmann, Herbert Kiefer-Gander, Alexander Ellert, Helmut Kohler, Wolfgang Haas