Patents by Inventor Jens Rosenloecher
Jens Rosenloecher 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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Patent number: 7993549Abstract: Process for producing carbon-ceramic brake discs comprising the following steps: production of a carbonized core body by press-molding a mixture containing reinforcing fibers and a binder, curing the binder by heating, and carbonizing by heating the press-molded body under exclusion of oxidizing substances to a temperature of between 750° C. and 1300° C., press-molding a moldable, reinforcing fiber-containing material onto the prefabricated carbonized core body which after the additional process steps produces the friction layer, curing the material for the friction layer, carbonizing the entire body and then infiltrating the composite body with liquid silicon.Type: GrantFiled: September 16, 2005Date of Patent: August 9, 2011Assignee: Audi AGInventors: Joachim Niewöhner, Markus Stettberger, Arno Sommer, Dunja Müller, Jens Rosenlöcher
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Patent number: 7763224Abstract: A method for treating workpieces that consist of porous carbon material with liquid silicon with the formation of silicon carbide, comprising the steps: Preheating porous carbon workpieces under inert gas to the selected operating temperature TB1, feeding liquid silicon to the porous carbon workpieces at an operating pressure pB2 and an operating temperature TB2, and impregnating the porous carbon workpieces with liquid silicon, reaction of the liquid silicon in the workpiece at a temperature TB3 with the formation of silicon carbide that consists of carbon and silicon, gassing the workpiece with inert gas and cooling from the operating temperature TB3 to the conditioning temperature Tk, cooling the workpieces to room temperature, the temperature TB3 being greater than or equal to the temperature TB2, and the workpiece in step d of the method no longer being in contact with liquid silicon outside of the workpiece.Type: GrantFiled: March 1, 2007Date of Patent: July 27, 2010Assignee: Audi AGInventors: Andreas Kienzle, Johann Daimer, Rudi Beck, Otto Mederle, Matthieu Schwartz, Jens Rosenlöcher
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Patent number: 7441635Abstract: Frictional pairing in motor vehicles, including a carbon-ceramic brake disk or a grey cast iron brake disk and a brake pad for the brake caliper of the parking brake, characterised in that the brake pad comprises a fiber-reinforced ceramic composite material, which has a matrix with phases of silicon carbide and reinforcement fibers of carbon, graphite, silicon carbide or whiskers of high-melting metals with a melting temperature of over 1500° C., and a parking brake comprising these material.Type: GrantFiled: October 1, 2004Date of Patent: October 28, 2008Assignee: Audi AGInventors: Jens Rosenlöcher, Mario Krupka
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Patent number: 7419700Abstract: Carbon-ceramic brake discs, the remaining porosity in which, after infiltration with a carbide-forming element and reaction of this element with at least part of the carbon in the preliminary body of the carbon-ceramic brake disc to form carbides, is at least partly filled with particles whose average diameter is in the range from 0.5 nm to 20 nm, and a process for producing carbon-ceramic brake discs with reduced porosity, wherein carbon-ceramic brake discs are treated with a solution of organic compounds of boron, zirconium, titanium, silicon or aluminum or mixtures of such compounds, the cited organic compounds being present as sols in an organic solvent, after removal from the sol bath the brake discs treated in this way are dried in an oven at a heating rate of between 30 K/h and 300 K/h under air or protective gas and are then tempered at a final temperature of between 350° C. and 800° C.Type: GrantFiled: August 30, 2005Date of Patent: September 2, 2008Assignee: Audi AGInventors: Hans-Michael Güther, Jens Rosenlöcher, Moritz Bauer
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Patent number: 7413701Abstract: Clutch linings comprising fiber-reinforced ceramic materials which contain short carbon fibers and whose matrix has a mass fraction of at least 40% of silicon carbide, process for producing them and their use in clutch systems, in particular for motor vehicles.Type: GrantFiled: August 17, 2004Date of Patent: August 19, 2008Assignee: SGL Carbon AGInventors: Andreas Kienzle, Mario Krupka, Gustavo Cabello, Jens Rosenloecher
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Patent number: 7238308Abstract: A process form producing ceramic composites comprising metal carbides, which comprises the steps production of a porous carbon-containing intermediate body, infiltration of the intermediate body with the melt of a carbon-forming metal, reaction of at least part of the carbon of the intermediate body with the carbide-forming metal to form a metal carbide, with at least part of the carbide-formed metal being supplied via at least one wick made of porous carbon material having pore channels and the wick being produced by carbonization of wood materials or of essentially unidirectionally reinforced CFRP, such wicks and their use in the abovementioned process.Type: GrantFiled: March 14, 2003Date of Patent: July 3, 2007Assignee: Audi AGInventor: Jens Rosenloecher
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Patent number: 7219776Abstract: A friction disc, in particular a brake or clutch disc, includes carbon fiber-reinforced ceramic composite material with at least one top surface formed as a friction surface. At least part of the friction surface is formed of a different material, in particular of a carbon-containing material. The different material exhibits lower wear and oxidation resistance than that of the rest of the friction surface and a supporting zone of the friction disc. A visual, audible or mechanical signal is produced under operating conditions due to comparatively greater wear. The signal provides a warning that the service life of the friction disc is being exceeded. A process for producing the friction disc is also provided.Type: GrantFiled: April 18, 2002Date of Patent: May 22, 2007Assignee: Audi AGInventors: Moritz Bauer, Bodo Benitsch, Martin Christ, Udo Gruber, Michael Heine, Andreas Kienzle, Jens Rosenlöcher, Rainer Zimmermann-Chopin
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Patent number: 7011888Abstract: Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite with an aqueous, phosphate-containing solution, b) drying, c) heat treatment at a temperature which is at least sufficient to convert the dried solution into insoluble compounds which are suitable for forming a self-healing glass, wherein the composite is treated oxidatively to form silicon oxide (SiO2) either prior to step a), between steps a) and b) or during or after step b) and/or c).Type: GrantFiled: December 6, 2002Date of Patent: March 14, 2006Assignee: SGL Carbon AGInventors: Moritz Bauer, Martin Christ, Udo Gruber, Andreas Kienzle, Jens Rosenlöcher, Rainer Zimmerman-Chopin
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Publication number: 20050040003Abstract: Clutch linings comprising fiber-reinforced ceramic materials which contain short carbon fibers and whose matrix has a mass fraction of at least 40% of silicon carbide, process for producing them and their use in clutch systems, in particular for motor vehiclesType: ApplicationFiled: August 17, 2004Publication date: February 24, 2005Applicant: SGL Carbon AGInventors: Andreas Kienzle, Mario Krupka, Gustavo Cabello, Jens Rosenloecher
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Patent number: 6759117Abstract: A multilayer ceramic composite is described which contains at least one supporting zone having oxidation-sensitive reinforcing fibers as well as a matrix. The matrix optionally contains oxidation-sensitive components. The composite further contains at least one surface layer, as well as at least one additional protective layer disposed between the supporting zone and surface layer, and whose matrix is composed substantially of at least one component of the matrix of the supporting zone or cover layer. The protective layer further contains additives that form self-healing layers.Type: GrantFiled: July 8, 2002Date of Patent: July 6, 2004Assignee: SGL Carbon AGInventors: Moritz Bauer, Martin Christ, Udo Gruber, Michael Heine, Andreas Kienzle, Jens Rosenlöcher, Rainer Zimmermann-Chopin
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Publication number: 20030178733Abstract: A process form producing ceramic composites comprising metal carbides, which comprises the steps production of a porous carbon-containing intermediate body, infiltration of the intermediate body with the melt of a carbon-forming metal, reaction of at least part of the carbon of the intermediate body with the carbide-forming metal to form a metal carbide, with at least part of the carbide-formed metal being supplied via at least one wick made of porous carbon material having pore channels and the wick being produced by carbonization of wood materials or of essentially unidirectionally reinforced CFRP, such wicks and their use in the abovementioned processType: ApplicationFiled: March 14, 2003Publication date: September 25, 2003Inventor: Jens Rosenloecher
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Publication number: 20030138672Abstract: Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite with an aqueous, phosphate-containing solution, b) drying, c) heat treatment at a temperature which is at least sufficient to convert the dried solution into insoluble compounds which are suitable for forming a self-healing glass, wherein the composite is treated oxidatively to form silicon oxide (SiO2) either prior to step a), between steps a) and b) or during or after step b) and/or c).Type: ApplicationFiled: December 6, 2002Publication date: July 24, 2003Inventors: Moritz Bauer, Martin Christ, Udo Gruber, Andreas Kienzle, Jens Rosenloecher, Rainer Zimmermann-Chopin