Patents by Inventor Stefan Kuehn
Stefan Kuehn 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: 20240132293Abstract: A feeding screw machine for feeding a processing screw machine comprises a housing with at least two housing bores formed therein and screw shafts rotatably arranged in the at least two housing bores. The at least two housing bores and the at least two screw shafts define a free volume in a respective cross-sectional plane, which decreases monotonically at least in some regions for continuous compression of a material in a conveying direction. This enables an improved supply of material with a low bulk density.Type: ApplicationFiled: January 28, 2022Publication date: April 25, 2024Applicant: Coperion GmbHInventors: Stefan HUBER, Markus SCHMUDDE, Svetlana MARINOVA, Ralf KÜHN, Kai KLUGE, Oleg RUDI, Dirk KYRION, Robert KESSLER, Leonid LIBER, Marina MATTA, Jochen SCHOFER
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Publication number: 20170001237Abstract: A method for producing a shaft-hub connection having a secondary bearing seat that is on the shaft and that is axially at a distance from the shaft-hub connection includes determining a dimensional deviation relative to a final dimension of the bearing seat as a derivative action for a deformation of the bearing seat. A final machining of the bearing seat is performed with the dimensional deviation before assembly of the shaft-hub connection. Then, the shaft-hub connection is produced by a press-fit connection. The deformation of the shaft caused by the shaft-hub connection deforms the bearing seat to the final dimension, in that the deformation of the shaft compensates for the dimensional deviation of the bearing seat.Type: ApplicationFiled: January 20, 2015Publication date: January 5, 2017Inventors: Heiko NEUKIRCHNER, Andreas WERLER, Stefan KUEHN, Peer LEICHSENRING
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Patent number: 9187794Abstract: The invention relates to the hardening of the surface layer of parts of machines, plants and apparatuses and also tools. Objects for which the application is possible and advantageous are components which are subjected to severe fatigue or wear stresses and are composed of hardenable steels and have a complicated shape and whose surface has to be hardened selectively on the functional surfaces or whose functional surface has a multidimensional shape. The process for hardening the surface layer of components having a complicated shape is carried out by means of a plurality of energy input zones.Type: GrantFiled: October 10, 2007Date of Patent: November 17, 2015Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Berndt Brenner, Steffen Bonss, Frank Tietz, Marko Seifert, Jan Hannweber, Stefan Kuehn, Udo Karsunke
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Patent number: 8829889Abstract: A laser protective wall element for a housing in laser machining stations with which increased protection, in particular for the eyes of living beings, can be achieved. In a laser protective wall element for a housing at laser machining stations, an intermediate layer is present which has hot conductor properties. The intermediate layer can be formed between electrically conductive plate-like elements, an electrically conductive plate-like element and an electrically conductive coating or also two electrically conductive layers or can be arranged there. The electrically conductive plate-like elements, the coating and/or the layers are connected to an electrical voltage source as well as a measuring instrument which detects electrical current, electrical resistance and/or electrical capacity and whose measured signal change can be used for the condition monitoring of the laser protective wall element.Type: GrantFiled: August 7, 2008Date of Patent: September 9, 2014Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Jan Hannweber, Stefan Kuehn, Sven Bretschneider, Michael Melde
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Publication number: 20110260737Abstract: A laser protective wall element for a housing in laser machining stations with which increased protection, in particular for the eyes of living beings, can be achieved. In a laser protective wall element for a housing at laser machining stations, an intermediate layer is present which has hot conductor properties. The intermediate layer can be formed between electrically conductive plate-like elements, an electrically conductive plate-like element and an electrically conductive coating or also two electrically conductive layers or can be arranged there. The electrically conductive plate-like elements, the coating and/or the layers are connected to an electrical voltage source as well as a measuring instrument which detects electrical current, electrical resistance and/or electrical capacity and whose measured signal change can be used for the condition monitoring of the laser protective wall element.Type: ApplicationFiled: August 7, 2008Publication date: October 27, 2011Inventors: Jan Hannweber, Stefan Kuehn, Sven Bretschneider, Michael Melde
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Publication number: 20100126642Abstract: The invention relates to the hardening of the surface layer of parts of machines, plants and apparatuses and also tools. Objects for which the application is possible and advantageous are components which are subjected to severe fatigue or wear stresses and are composed of hardenable steels and have a complicated shape and whose surface has to be hardened selectively on the functional surfaces or whose functional surface has a multidimensional shape. The process for hardening the surface layer of components having a complicated shape is carried out by means of a plurality of energy input zones.Type: ApplicationFiled: October 10, 2007Publication date: May 27, 2010Inventors: Berndt Brenner, Steffen Bonss, Frank Tietz, Marko Seifert, Jan Hannweber, Stefan Kuehn, Udo Karsunke
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Patent number: 6880499Abstract: A device for displacing a cylinder block and cylinder head vs a crankcase. The cylinder block contains cylinders having an axis. In this case, the device comprises a plurality of bearing bridges extending across the cylinder block between the cylinders in a substantially straight line that is substantially perpendicular to the cylinder axis. In this case, each of the plurality of bearing bridges have a plurality of bearing passages. There are at least two setting shafts disposed in an upper region of the cylinder block in these bearing passages, and arranged in an alternating manner over a length of the crankcase. There are also a plurality of eccentrics which are coupled to the at least two setting shafts and supported on both sides of each of the cylinders. There are also a plurality of hollow support bars disposed in the cylinder block below the receiving bores.Type: GrantFiled: May 12, 2003Date of Patent: April 19, 2005Assignee: IAV GmbH Ingenieurgesellschaft Auto und VerkehrInventors: Werner Hoffmann, Stefan Kühn
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Patent number: 6279992Abstract: A folding table for fitting to a rear side of a back of a seat in a motor-coach or an aircraft has a folding table element, pivotal articulation means formed so that the folding table element is pivotable back and forth between an out-of-use position in which the folding table element lyes substantially flat against a rear side of a back of a seat and an in-use position in which the folding table element projects approximately horizontally from the rear side of the back of the seat, a holder provided for holding a drink container and movably connected to the holding table element, a guide connecting the holder with the holding table element so that the holder, when the folding table element is in the in-use position is movable back and forth between an out-of-use position in which the holder is stowed in the holding table element, and an in-use position in which a drink container can be placed into the holder.Type: GrantFiled: July 21, 1999Date of Patent: August 28, 2001Assignees: Fischerwerke Artur Fischer GmbH & Co. KG, Evobus GmbHInventors: Bernd Plocher, Stefan Kuehn, Andre Hein, Michael Keller, Soeren Groth, Monika Jessberger, Franz Kriegelsteiner
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Patent number: 6227509Abstract: The holder for a drinks container includes a holding arm (16) movable from an initial position into a holding position and formed to hold the drinks container around a circumference of the drinks container, a cover (14) movable from a closed position into an open position and a locking device (32,38) for locking the holding arm (16) in the initial position and for unlocking the holding arm (16) when the cover is moved into the open position. In a preferred embodiment the locking device (32,38) includes a slider member (32), a device for displacing the slider member (32) from a first position to a second position when the cover (14) is opened and a detent lug (38) provided on the holding arm (16) that locks the slider member (32) when the holding arm (16) is in the initial position and that unlocks the slider member (32) when the slider member (32) is displaced from the first position to the second position.Type: GrantFiled: June 25, 1999Date of Patent: May 8, 2001Assignees: Fischerwerke Arthur Fischer GmbH & Co. KG, DaimlerChrysler AGInventors: Bernd Plocher, Friedrich Schanz, Stefan Kuehn, Gerd Lemke
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Patent number: 6186379Abstract: A device for securing pieces of luggage in a luggage compartment of a car has a frame having an adjustable size and placeable on a luggage compartment floor, and a floor mat which is impermeable to liquid and is mounted on the frame.Type: GrantFiled: October 31, 1997Date of Patent: February 13, 2001Assignee: Fischerwerke Artur Fischer GmbH & Co. KGInventors: Manfred Haage, Bernd Schoch, Wilhelm Schoch, Andrè Hein, Michael Braun, Dietmar Renner, Stefan Kühn, Friedrich Karrer
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Patent number: 5818112Abstract: In an arrangement for signal transmission between chip layers of a vertically integrated circuit, a defined, capacitive signal transmission ensues between a part of the vertically integrated circuit in one chip layer and a further part of the vertically integrated circuit in a further chip layer by means of a coupling capacitance. Particularly given high connection densities, a large number of freely placeable and reliable vertical signal connections can be produced directly from the inside of one chip layer to the inside of a neighboring chip layer without extremely high demands being made on the adjustment of the chip layers relative to one another and on the surface planarity of the individual chip layers.Type: GrantFiled: October 27, 1995Date of Patent: October 6, 1998Assignee: Siemens AktiengesellschaftInventors: Werner Weber, Stefan Kuehn, Michael Kleiner, Roland Thewes
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Patent number: 5701037Abstract: In an arrangement for signal transmission between chip layers of a vertically integrated circuit, a defined, inductive signal transmission ensues between a part of the vertically integrated circuit in one chip layer and a further part of the vertically integrated circuit in a further chip layer by means of a coupling inductance formed by respective coils in the two layers. Particularly given high connection densities, a large number of freely placeable and reliable vertical signal connections can be produced directly from the inside of one chip layer to the inside of a neighboring chip layer without extremely high demands being made on the adjustment of the chip layers relative to one another and on the surface planarity of the individual chip layers.Type: GrantFiled: October 27, 1995Date of Patent: December 23, 1997Assignee: Siemens AktiengesellschaftInventors: Werner Weber, Stefan Kuehn, Michael Kleiner, Roland Thewes