Patents by Inventor Steffen Lehmann
Steffen Lehmann 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).
-
Publication number: 20090121401Abstract: Disclosed is an assembly for damping vibrations on a wheel that is used for driving a secondary unit of a vehicle. Said assembly comprises a damping device on the driving wheel that is mounted on a hub which is connected to a drive shaft of the secondary unit. A torsional vibration damper that is combined with a friction clutch is provided as a damping device. The friction clutch is fitted with at least one friction surface facing the hub and at least one second friction surface facing the friction ring in order to non-positively and/or positively couple the driving wheel to the hub via the damper cage of the torsional vibration damper such that torque is transmitted in a vibration damping manner from the driving wheel to the hub via the damper cage. The second friction surface is located between a plate spring and a support disk. The plate spring is connected to the damper cage while the support disk is connected to the hub.Type: ApplicationFiled: October 13, 2008Publication date: May 14, 2009Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Steffen Lehmann, Dimitri Sieber
-
Publication number: 20080318715Abstract: The invention relates to a drive wheel (1) of an auxiliary unit belt drive of an internal combustion engine, having a running casing (2) which is operatively connected to a traction mechanism, having a hub (3) which is rotationally fixedly connected to the drive axle of an auxiliary unit, and having a damping device (4), which is arranged so as to act between the running casing (2) and the hub (3), for reducing rotary oscillations, with the damping device (4) comprising a spring store (5) which is arranged so as to act between the running casing (2) and the hub (3). In order that the running casing can be produced more economically, the invention provides that the running casing (2) is composed of a running part (6), a driver part (7) and a spring receptacle (8), with the running part (6) being rotationally fixedly and permanently connected to the driver part (7), and wherein the driver part (7) can be or is connected in a form-fitting manner to the spring receptacle (8).Type: ApplicationFiled: December 10, 2007Publication date: December 25, 2008Applicants: SCHAEFFLER KG, LUK LAMELLEN- UND KUPPLUNGSBAU BETEILIGUNGS KGInventors: Rainer PFLUG, Steffen LEHMANN, Christian HAUCK, Christian FECHLER, Dimitri SIEBER
-
Publication number: 20080139351Abstract: The decoupler for a drive wheel arrangement for an auxiliary unit of an internal combustion engine has a belt pulley connected to a flexible drive element and a shaft. A damping device is arranged between the shaft and the belt pulley and includes a spring. The belt pulley is connected to a damper cage, which is connected via at least one spring to a damper cage which is positioned such that it can rotate on the shaft.Type: ApplicationFiled: December 10, 2007Publication date: June 12, 2008Applicants: SCHAEFFLER KG, LUK LAMELLEN- UND KUPPLUNGSBAU BETEILIGUNGS KGInventors: Rainer PFLUG, Steffen LEHMANN, Christian HAUCK, Christian FECHLER, Dimitri SIEBER
-
Publication number: 20070137968Abstract: A drive unit with a radial interior drive element and a radial exterior drive element as well as a free-wheel arranged between the interior drive element and the exterior drive element. The interior drive element and the exterior drive element are axially displaceable in reference to each other.Type: ApplicationFiled: December 14, 2006Publication date: June 21, 2007Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventor: Steffen Lehmann
-
Patent number: 6883487Abstract: A torsional vibration damping apparatus, especially a web damper for mounting on a crankshaft of a piston engine, particularly an internal combustion engine for suppression of natural torsion frequencies from crankshafts can now be economically produced. The apparatus comprises a housing fastened to the engine crankshaft to which at least one rotary mass is coupled with spring elements disposed between the housing and the rotary mass allowing the apparatus to be pre-assembled. Advantageously, multiple parts of the torsional vibration damping apparatus, such as the housing can now be fabricated from more economic sheet metal in place of more costly cast parts.Type: GrantFiled: December 16, 2003Date of Patent: April 26, 2005Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KGInventors: Steffen Lehmann, Christian Fechler
-
Publication number: 20040127295Abstract: A torsional vibration damping apparatus, especially a web damper, is proposed for mounting on a crankshaft of a piston engine, especially an internal combustion engine. It is distinguished in that the torsional vibration damping apparatus comprises multiple sheet metal parts.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Steffen Lehmann, Christian Fechler
-
Patent number: 6382164Abstract: 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: GrantFiled: September 12, 2001Date of Patent: May 7, 2002Assignee: LuK Lamellen und Kupplungsbau GmbHInventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
-
Publication number: 20020002960Abstract: 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: ApplicationFiled: September 12, 2001Publication date: January 10, 2002Applicant: LuK Lamellen und Kupplungsbau GmbHInventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
-
Patent number: 6308678Abstract: 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: GrantFiled: September 13, 2000Date of Patent: October 30, 2001Assignee: LuK Lamellen und Kupplungsbau GmbHInventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
-
Publication number: 20010032769Abstract: 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: ApplicationFiled: April 18, 2001Publication date: October 25, 2001Applicant: LuK Lamellen und Kupplungsbau GmbhInventors: Steffen Lehmann, Karl-Ludwig Kimmig, Roland Seebacher, Friedrich Gerhardt, Joachim Hoffman, Hermann Langeneckert
-
Patent number: 6305522Abstract: A clutch disc wherein two annular washer-like friction linings flank a two-part resilient cushion which moves the friction linings apart during disengagement of a friction clutch wherein the clutch disc is installed between an engine-driven flywheel and an axially movable pressure plate, and which stores energy during engagement of the clutch. A blocking or movement limiting device, which defines a fulcrum for the friction linings, is provided between the parts of the cushion and/or on the friction linings to prevent an axial movement of the friction linings toward each other beyond a selected minimum distance and to thus compensate for deformation of the flywheel and/or pressure plate as a result of heating attributable to slippage of the pressure plate and flywheel relative to the adjacent friction linings during engagement and disengagement of the clutch.Type: GrantFiled: December 21, 2000Date of Patent: October 23, 2001Assignee: LuK Lamellen Kupplungsbau GmbHInventors: Jürgen Busse, Hans-Dieter Elison, Kraft Gunther, Steffen Lehmann, Andreas Raimann, Willi Ruder, Martin Schindler, Mario Thümmler, Albert Birk
-
Patent number: 6293383Abstract: The invention relates to a torsion vibration damper having a main damper containing energy accumulators and a friction device, as well as a preliminary damper containing energy accumulators and a friction device.Type: GrantFiled: January 6, 2000Date of Patent: September 25, 2001Assignee: LuK Lamellen und Kupplungsbau GmbHInventors: Joachim Hoffmann, Steffen Lehmann, Andreas Posch
-
Patent number: 6279712Abstract: A clutch disc wherein two annular washer-like friction linings flank a two-part resilient cushion which moves the friction linings apart during disengagement of a friction clutch wherein the clutch disc is installed between an engine-driven flywheel and an axially movable pressure plate, and which stores energy during engagement of the clutch. A blocking or movement limiting device, which defines a fulcrum for the friction linings, is provided between the parts of the cushion and/or on the friction linings to prevent an axial movement of the friction linings toward each other beyond a selected minimum distance and to thus compensate for deformation of the flywheel and/or pressure plate as a result of heating attributable to slippage of the pressure plate and flywheel relative to the adjacent friction linings during engagement and disengagement of the clutch.Type: GrantFiled: December 18, 1998Date of Patent: August 28, 2001Assignee: LuK Lamellen und Kupplungsbau GmbHInventors: Jürgen Busse, Hans-Dieter Elison, Kraft Gunther, Steffen Lehmann, Andreas Raimann, Willi Ruder, Martin Schindler, Mario Thümmler, Albert Birk
-
Publication number: 20010000593Abstract: A clutch disc wherein two annular washer-like friction linings flank a two-part resilient cushion which moves the friction linings apart during disengagement of a friction clutch wherein the clutch disc is installed between an engine-driven flywheel and an axially movable pressure plate, and which stores energy during engagement of the clutch. A blocking or movement limiting device, which defines a fulcrum for the friction linings, is provided between the parts of the cushion and/or on the friction linings to prevent an axial movement of the friction linings toward each other beyond a selected minimum distance and to thus compensate for deformation of the flywheel and/or pressure plate as a result of heating attributable to slippage of the pressure plate and flywheel relative to the adjacent friction linings during engagement and disengagement of the clutch.Type: ApplicationFiled: December 21, 2000Publication date: May 3, 2001Applicant: LuK Lamellen Kupplungsbau GmbHInventors: Jurgen Busse, Hans-Dieter Elison, Kraft Gunther, Steffen Lehmann, Andreas Raimann, Willi Ruder, Martin Schindler, Mario Thummler, Albert Birk
-
Patent number: 6142115Abstract: 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: GrantFiled: September 2, 1998Date of Patent: November 7, 2000Assignee: Luk Lamellen und Kupplungsbau, GmbHInventors: Wolfgang Haas, Ruben Schmitt, Friedrich Gerhardt, Wolfgang Reik, Steffen Lehmann, Willi Ruder
-
Patent number: RE38655Abstract: The invention relates to a torsion vibration damper having a main damper containing energy accumulators and a friction device, as well as a preliminary damper containing energy accumulators and a friction device.Type: GrantFiled: March 12, 2003Date of Patent: November 23, 2004Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Joachim Hoffmann, Steffen Lehmann, Andreas Posch