Patents by Inventor Johann Hahn

Johann Hahn 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: 6321891
    Abstract: A hydrokinetic torque converter in the power train between the engine and the wheels of a motor vehicle has a rotary engine-driven housing which is of one piece with a pump and contains a rotary turbine having a hub which drives the input shaft of a transmission. A lockup clutch can be engaged, either entirely or with slip, to transmit torque from the housing or from the pump to the hub of the turbine. Such clutch can employ flat or conical friction linings and/or friction surfaces, for example, a friction lining on the shell of the turbine and a friction surface on a wall of the housing. The shell of the turbine in the torque converter employing such clutch is movable axially to advance the friction lining into or from engagement with the friction surface. Alternatively, the lockup clutch can be installed in a torus which is defined by the turbine and the pump of the torque converter, and such clutch can be cooled by one or more streams of a hydraulic fluid.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: November 27, 2001
    Assignee: LuK Getriebe-System GmbH
    Inventors: Steven Olsen, Johannes Hahn, Volker Middelmann, Hubert Friedmann, Marc Meisner
  • Patent number: 5813505
    Abstract: A hydrokinetic torque converter in the power train between the engine and the wheels of a motor vehicle has a rotary engine-driven housing which is of one piece with a pump and contains a rotary turbine having a hub which drives the input shaft of a transmission. A lockup clutch can be engaged, either entirely or with slip, to transmit torque from the housing or from the pump to the hub of the turbine. Such clutch can employ flat or conical friction linings and/or friction surfaces, for example, a friction lining on the shell of the turbine and a friction surface on a wall of the housing. The shell of the turbine in the torque converter employing such clutch is movable axially to advance the friction lining into or from engagement with the friction surface. Alternatively, the lockup clutch can be installed in a torus which is defined by the turbine and the pump of the torque converter, and such clutch can be cooled by one or more streams of a hydraulic fluid.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: September 29, 1998
    Assignee: LuK Getriebe-Systeme GmbH
    Inventors: Steven Olsen, Johannes Hahn, Volker Middelmann, Hubert Friedmann, Marc Meisner
  • Patent number: 4772171
    Abstract: The tubes to be conveyed to the pirn heads are stacked up within each other in columnar fashion, are held in readiness at a supply location and are separated to be taken away. The separated tube is brought into a conveying position and, while maintaining this conveying position, is transferred to a conveyor extending across all of the pirn heads of the machine. For this purpose a tube-conveying device is installed between a tube magazine (4) and a conveyor belt (2) extending alongside all of the pirn heads, containing means (51) to position the tube (50) into the conveying position and means (71, 6, 8) for the transfer of the tube (5) in its conveying position to the conveyor belt (2).
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: September 20, 1988
    Inventors: Walter Mayer, Johann Hahn, Rupert Karl