Patents by Inventor Volker Middelmann
Volker Middelmann 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).
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Publication number: 20150369351Abstract: The invention relates to a pumping device for introduction of a fluid into a base layer, in particular into a base layer containing gas, for the production of gas-permeable structures in the base layer. The pumping device is arranged on a transportation vehicle having a separate drive unit, including a pump motor and a pump, whereby a speed/torque converter is arranged between pump and pump motor. A hydrodynamic device, in particular a hydrodynamic converter, is used in place of a transmission for speed/torque conversion.Type: ApplicationFiled: June 22, 2015Publication date: December 24, 2015Applicant: Voith Patent GmbHInventors: Andreas Hermann, Volker Middelmann, Reinhard Kernchen, Hans Schirle
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Publication number: 20130180241Abstract: The invention concerns a conveyor system for oil or gas with an engine, which generates an exhaust gas flow 4; with a conveying device (2) driven by the engine in the form of a pump or compressor, which conveys and/or compresses said oil or said gas; with an exhaust gas energy recovery device, which converts the heat of the exhaust gas flow (4) into mechanical energy.Type: ApplicationFiled: February 18, 2012Publication date: July 18, 2013Applicant: Voith Patent GMBHInventors: Volker Middelmann, Andreas Herrmann, Maik Tietz, Daniel Flemmer, Thomas Vogel, Jurgen Berger, Stephan Bartosch
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Patent number: 7231865Abstract: A swiveling motor for a divided stabilizer in an area of a vehicle axle, in which a housing is closed off in a region of its end surfaces by lids. A differential pressure regulating valve located coaxially with the housing and having at least one electromagnet, and two springs of different spring load deflection characteristics directed opposite to one another. One of these springs has a lower spring load deflection characteristic in a region of the electromagnet.Type: GrantFiled: June 6, 2005Date of Patent: June 19, 2007Assignee: Thyssenkrupp Automotive AGInventors: Holger Wehaus, Volker Middelmann
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Publication number: 20050247053Abstract: An oscillating motor for a two-part stabilizer in the vicinity of a motor vehicle axis. The motor has at least one housing which is closed by covers in vicinity of its end faces and holds a rotor in addition to a valve. This valve is a pressure differential control valve positioned coaxially with the housing, and contains at least one electromagnet.Type: ApplicationFiled: June 6, 2005Publication date: November 10, 2005Inventors: Holger Wehaus, Volker Middelmann
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Patent number: 6367605Abstract: The housing of a hydrokinetic torque converter in the power train between the engine and the transmission of a motor vehicle contains a lockup valve which can be engaged to transmit torque directly from the output element of the engine to the output member of the turbine in the housing. Engagement of the lockup clutch at a relatively low RPM of the engine and/or under certain other circumstances is prevented or minimized by the provision of one or more valves which are designed to establish or to at least partially seal one or more paths for direct flow of hydraulic fluid between two compartments forming part of a chamber in the housing of the torque converter and being disposed at opposite sides of the axially movable piston of the lockup clutch. The valve or valves can be designed to react in response to changing RPM of the housing of the torque converter, in response to changes of the temperature of hydraulic fluid in the housing and/or in response to changes of the viscosity of such fluid.Type: GrantFiled: July 20, 1998Date of Patent: April 9, 2002Assignee: LuK Getriebe-Systeme GmbHInventors: Volker Middelmann, Jürgen Freitag, Marc Meisner
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Patent number: 6321891Abstract: 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: GrantFiled: August 16, 2000Date of Patent: November 27, 2001Assignee: LuK Getriebe-System GmbHInventors: Steven Olsen, Johannes Hahn, Volker Middelmann, Hubert Friedmann, Marc Meisner
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Patent number: 6293379Abstract: A hydrokinetic torque converter for use with a transmission in the power train of a motor vehicle has a housing rotatable by the engine and containing a pump, a turbine and at least one stator as well as a rotary output device connected to the input shaft of the transmission. The pump is normally rotatable by the housing; the turbine is rotatable (a) by the fluid which is circulated by the pump or (b) by the housing in response to engagement of a lockup clutch; and the stator can be connected to the stationary case of the transmission or is rotatable by the circulating fluid. First and second hubs are non-rotatably but axially movably mounted on the output member and are respectively connectable with the turbine and the stator by suitable clutches.Type: GrantFiled: March 15, 2000Date of Patent: September 25, 2001Assignee: LuK Getriebe-Systeme GmbHInventors: Mircea Gradu, Uwe Wagner, Volker Middelmann, Shailesh Kozarekar, Edmund Maucher, Wolfgang Reik
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Patent number: 6289674Abstract: A hydrokinetic torque converter, which exhibits important advantages regarding the consumption of fuel and the operation at low RPM in the power train of a motor vehicle, has a stator, a pump and a turbine which jointly form a toroidal structure having a meridian cross-sectional outline which is asymmetrical with reference to at least one axis other than the rotational axis of the housing of the torque converter.Type: GrantFiled: September 30, 1999Date of Patent: September 18, 2001Assignee: Luk Getriebe-Systeme GmbHInventors: Clemens Halene, Allan Biber, Volker Middelmann, Ravishankar Gundlapalli
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Patent number: 6193037Abstract: A hydrodynamic torque converter wherein the housing is connected to the output element of an engine in the power train of a motor vehicle and receives a coaxial hub which is rotatable by the turbine wheel in the housing or by a clutch disk forming part of a lockup clutch and being axially movably but non-rotatably mounted on the hub. The lockup clutch further comprises a piston which is rotatably and axially movably mounted on the hub, and a laimina which is non-rotatably but axially movably mounted in the housing and extends radially inwardly between the piston and the clutch disk. The clutch is engaged when the piston is moved axially of the housing to thus urge the lamina against the clutch disk and to thus bias the clutch disk against an adjacent wall of the housing so that the clutch disc then transmits torque between the housing and the hub to thus bypass the torque transmitting connection between the housing and the hub by way of a satator wheel in the housing and the turbine wheel.Type: GrantFiled: August 20, 1999Date of Patent: February 27, 2001Assignee: Luk Getreibe-Systeme GmbHInventors: Volker Middelmann, Wendy Boman, Mircea Gradu
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Patent number: 6099435Abstract: The invention relates to a power train which is to be utilized in a motor vehicle and employs a hydrokinetic torque converter--lockup clutch--electronic control system assembly operating in such a way that the lockup clutch is already at least partially engaged while the engine of the motor vehicle is running but the vehicle is at a standstill. This reduces the likelihood of the development of shocks during shifting of a manual, automated or continuously variable transmission which receives torque from the output element of the torque converter. Another feature of the invention resides in the provision of a compact, lightweight and inexpensive design of the torus composed of the impeller, reactor and stator of the hydrokinetic torque converter.Type: GrantFiled: March 10, 1999Date of Patent: August 8, 2000Assignee: Luk Getriebe-Systeme GmbHInventors: Clemens Halene, Ravi Gundlapalli, Allan Biber, Volker Middelmann, Bruno Muller
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Patent number: 6050375Abstract: A hydrokinetic torque converter for use with a transmission in the power train of a motor vehicle has a housing rotatable by the engine and containing a pump, a turbine and at least one stator as well as a rotary output device connected to the input shaft of the transmission. The pump is normally rotatable by the housing; the turbine is rotatable (a) by the fluid which is circulated by the pump or (b) by the housing in response to engagement of a lockup clutch; and the stator can be connected to the stationary case of the transmission or is rotatable by the circulating fluid. First and second hubs are non-rotatably but axially movably mounted on the output member and are respectively connectable with the turbine and the stator by suitable clutches.Type: GrantFiled: June 3, 1998Date of Patent: April 18, 2000Assignee: LuK Getriebe-Systeme GmbHInventors: Mircea Gradu, Uwe Wagner, Volker Middelmann, Shailesh Kozarekar, Edmund Maucher, Wolfgang Reik
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Patent number: 5813505Abstract: 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: GrantFiled: July 18, 1996Date of Patent: September 29, 1998Assignee: LuK Getriebe-Systeme GmbHInventors: Steven Olsen, Johannes Hahn, Volker Middelmann, Hubert Friedmann, Marc Meisner
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Patent number: 5779012Abstract: The housing of a hydrokinetic torque converter in the power train between the engine and the transmission of a motor vehicle contains a lockup valve which can be engaged to transmit torque directly from the output element of the engine to the output member of the turbine in the housing. Engagement of the lockup clutch at a relatively low RPM of the engine and/or under certain other circumstances is prevented or minimized by the provision of one or more valves which are designed to establish or to at least partially seal one or more paths for direct flow of hydraulic fluid between two compartments forming part of a chamber in the housing of the torque converter and being disposed at opposite sides of the axially movable piston of the lockup clutch. The valve or valves can be designed to react in response to changing RPM of the housing of the torque converter, in response to changes of the temperature of hydraulic fluid in the housing and/or in response to changes of the viscosity of such fluid.Type: GrantFiled: August 5, 1997Date of Patent: July 14, 1998Assignee: Luk Getriebe-Systeme GmbHInventors: Volker Middelmann, Marc Meisner, Jurgen Freitag