Patents by Inventor Stephan Kramer
Stephan Kramer 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: 8365806Abstract: A method and a device for producing a metal strip by continuous casting and rolling, in which a thin slab is initially cast into a casting machine, and is subsequently rolled in at least one rolling train using primary heat from the casting cycle. The cast thin slab is passed between the casting machine and the at least one rolling train and at least one holding oven as well as at least one induction oven. The holding oven and the induction oven are activated or deactivated according to a selected mode of operation, that is, a first mode of operation for the continuous production of the metal strip and a second mode of operation for the discontinuous production of the metal strip.Type: GrantFiled: December 7, 2006Date of Patent: February 5, 2013Assignee: SMS Siemag AktiengesellschaftInventors: Dieter Rosenthal, Stephan Krämer, Jürgen Seidel, Frank Benfer
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Patent number: 8011418Abstract: A method of manufacturing a metal strip includes casting a slab (3) or preliminary strip (3?) in a casting machine (2) and subsequently rolling the cast slab (3) or preliminary strip (3?) in at least one rolling train (4, 5) in a first operating mode with the at least one rolling train being connected with the casting machine for continuously manufacturing the metal strip, and in a second operating mode removing the cast slab (3) or preliminary strip (3?) from the main transport line (6) with a shuttle system arranged between the casting machine (2) and the at least one rolling train (4, 5), storing the removed slab (3) or preliminary strip (3?), and subsequently transporting the removed slab (3) or preliminary strip back into the main transport line, with the removed slab (3) or preliminary strip (3?) being heated to a desired temperature or maintained at a desired temperature prior to the transport back into the main transport line (6) for discontinuously manufacturing the metal strip.Type: GrantFiled: August 21, 2008Date of Patent: September 6, 2011Assignee: SMA Siemag AktiengesellschaftInventors: Dieter Rosenthal, Stephan Krämer, Christoph Klein, Jürgen Seidel, Wolfgang-Dietmar Hackenberg
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Publication number: 20100212856Abstract: The invention relates to a method for producing a metal strip (1) by continuous casting and rolling. According to said method, a thin slab (3) is initially cast into a casting machine (2), which is subsequently rolled in at least one rolling train (4, 5) using primary heat from the casting cycle. According to the invention, in order to improve the functionality of the continuous casting and rolling installation, the cast thin slab (3) is passed between the casting machine (2) and the at least one rolling train (4, 5) and at least one holding oven (6) as well as at least one induction oven (7). The holding oven (6) and the induction oven (7) are activated or deactivated according to a selected mode of operation, that is, a first mode of operation for the continuous production of the metal strip (1) and a second mode of operation for the discontinuous production of the metal strip (1). The invention further relates to a device for producing a metal strip by continuous casting and rolling.Type: ApplicationFiled: December 7, 2006Publication date: August 26, 2010Inventors: Dieter Rosenthal, Stephan Krämer, Jürgen Seidel, Frank Benfer
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Publication number: 20090014037Abstract: The invention relates to a method of cleaning or descaling thin slabs and rolled strips in a hot strip rolling mill train and is characterized by use of cryogens such as oxygen or compound formed of cryogens with a carrier medium such as compressed air which are sprayed into slab surface or strip surface in liquid, deep-freeze form. The invention also relates to a method of cleaning and/or descaling of strips in a strip treatment installation with the above-mentioned characterized features, and to a correspondingly equipped apparatus.Type: ApplicationFiled: November 17, 2006Publication date: January 15, 2009Inventors: Hans-Peter Richter, Heinrich Roese, Stephan Kramer, Walter Timmerbeul, Heinz-Dieter Gabriel, Juergen Seidel, Andreas Gramer
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Patent number: 7475679Abstract: In a fuel supply system for a spark-ignition internal combustion engine having a blow-in valve for each cylinder for blowing an easily ignitable mixture of a liquid fuel and a combustion gas via a blow-in nozzle into a combustion chamber of the internal combustion engine, the blow-in valve has a pressure connection for supplying pressurized combustion gas to a blown-in nozzle from an external pressure source, and the blow-in valve has a piston/cylinder unit for delivering the liquid fuel for injection into the cylinder together with the combustion gas, with a plunger being provided for an at least indirect actuation of a nozzle needle of the blow-in nozzle controlling the injection of a metered quantity of fuel and the combustion gas into the combustion chamber.Type: GrantFiled: September 27, 2007Date of Patent: January 13, 2009Assignee: Daimler AGInventors: Andreas Biemelt, Peter Dittrich, Gerd Huber, Alexander Koren, Stephan Krämer, Paul Neumeir
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Publication number: 20080035110Abstract: In a fuel supply system for a spark-ignition internal combustion engine having a blow-in valve for each cylinder for blowing an easily ignitable mixture of a liquid fuel and a combustion gas via a blow-in nozzle into a combustion chamber of the internal combustion engine, the blow-in valve has a pressure connection for supplying pressurized combustion gas to a blow-in nozzle from an external pressure source and the blow-in valve has a piston/cylinder unit for delivering the liquid fuel for injection into the cylinder together with the combustion gas with a plunger of being provided for an at least indirect actuation of a nozzle needle of the blow-in nozzle controlling the injection of a metered quantity of fuel and the combustion gas.Type: ApplicationFiled: September 27, 2007Publication date: February 14, 2008Inventors: Andreas Biemelt, Peter Dittrich, Gerd Huber, Alexander Koren, Stephan Kramer, Paul Neumeir
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Publication number: 20060011165Abstract: In a method for operating a spark-ignition internal combustion engine, wherein fuel is metered into the cylinders by direct fuel injection into the combustion chambers and by the addition of fuel in an intake region of the engine and a control unit matches the quantity of fuel to be added in the intake region and the quantity of fuel to be injected directly into the combustion chamber to one another as a function of the operating point of the internal combustion engine so as to provide an ignitable fuel mixture in the combustion chamber, the control unit determines a recirculation rate for the re-circulated exhaust gas and adjusts a predetermined excess air ratio (?) for the mixture composed of fresh air, re-circulated exhaust gas and fuel by means of the direct injection of fuel into the combustion chamber taking into account the recirculation rate in order to reduce the exhaust emissions of the internal combustion engine and improve fuel consumption.Type: ApplicationFiled: August 19, 2005Publication date: January 19, 2006Inventors: Jürgen Frey, Karl Günter, Roland Kemmler, Stephan Krämer
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Publication number: 20040089046Abstract: A method and a plant for the hot rolling of strip, in which the rolling stock is rolled in at least one reversing roughing stand with a number of roughing passes into a broken-down strip, and the broken-down strip is transported over an intermediate roller table into at least one Steckel finishing stand and the strip is finish-rolled in the finishing stand with a number of passes into a finished strip having a predetermined thickness, and the strip is finally wound into a coil. The length of the intermediate roller table determined by the length of the broken-down strip is shortened and tandem rolling is carried out in the roughing stand and the finishing stand at least during the last breaking-down pass of the strip.Type: ApplicationFiled: October 30, 2003Publication date: May 13, 2004Inventor: Stephan Kramer
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Publication number: 20030051525Abstract: A method and a plant for the hot rolling of strip, in which the rolling stock is rolled in at least one reversing roughing stand with a number of roughing passes into a broken-down strip, and the broken-down strip is transported over an intermediate roller table into at least one Steckel finishing stand and the strip is finish-rolled in the finishing stand with a number of passes into a finished strip having a predetermined thickness, and the strip is finally wound into a coil. The length of the intermediate roller table determined by the length of the broken-down strip is shortened and tandem rolling is carried out in the roughing stand and the finishing stand at least during the last breaking-down pass of the strip.Type: ApplicationFiled: November 1, 2002Publication date: March 20, 2003Inventor: Stephan Kramer
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Publication number: 20020184984Abstract: A flying shear with knife edges mounted on drums arranged opposite each other, wherein the knife edges can be accelerated to the feeding speed of the strip to be cut and the knife edges can be adjusted toward each other for carrying out a cut. The drums can be accelerated at least one drive unit to a circumferential speed which corresponds to the speed of the strip to be cut and a separately controllable adjusting device is provided for at least one of the drums. At least one of the drums is mounted on links which are connected to the adjusting devices; on the other hand, at least one of the drums may be mounted by means of at least one linear guide and the adjusting device acts on the guide members thereof.Type: ApplicationFiled: July 31, 2002Publication date: December 12, 2002Inventors: Dieter Rosenthal, Friedhelm Kalteich, Martin Braun, Karl-Friedrich Fuhrmann, Stephan Kramer, Gunter Kneppe
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Publication number: 20020035906Abstract: A flying shear with knife edges mounted on drums arranged opposite each other, wherein the knife edges can be accelerated to the feeding speed of the strip to be cut and the knife edges can be adjusted toward each other for carrying out a cut. The drums can be accelerated at least one drive unit to a circumferential speed which corresponds to the speed of the strip to be cut and a separately controllable adjusting device is provided for at least one of the drums. At least one of the drums is mounted on links which are connected to the adjusting devices; on the other hand, at least one of the drums may be mounted by means of at least one linear guide and the adjusting device acts on the guide members thereof.Type: ApplicationFiled: November 15, 2001Publication date: March 28, 2002Inventors: Dieter Rosenthal, Friedhelm Kalteich, Martin Braun, Karl-Friedrich Fuhrmann, Stephan Kramer, Gunter Kneppe
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Patent number: 6282938Abstract: The invention relates to a method for rolling a metal strip (6) in a reverse rolling mill (1) with a coiler located upstream and a coiler located downstream (4,5). The metal strip is wound off the upstream coiler (4) with a strip thickness (d) and at a strip temperature (T) above a set temperature (T*). It is then passed through the reverse rolling mill (1) with a first draught of at most 5% and at a speed (v) before being wound up by the downstream coiler (5). The speed (v) at which the strip is passed through the rolling mill is selected with the aim of ensuring that the strip has reached the set temperature (T*) by the time it is wound up. The strip is then wound off the downstream coiler (5), passed through the reverse rolling mill (1) with a second draught of at least 10% and wound up by the upstream coiler (4).Type: GrantFiled: December 18, 2000Date of Patent: September 4, 2001Assignee: SMS Scholemann-Siemag AktiengesellschaftInventors: Werner Mertens, Stephan Krämer
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Patent number: 6223714Abstract: Switching off a fuel pump of a fuel supply system for the internal combustion engine with the aid of a signal from a retardation sensor of the airbag in the event of a crash in which the motor vehicle is involved is known. To further enhance the safety of motor-vehicle occupants, a method is proposed for an internal combustion engine which has at least one fuel injection valve, a fuel supply system for the at least one fuel injection valve, and a sensor for detecting a crash. After the crash has been detected by means of the sensor, the fuel injection valve is brought into an open position, with the result that fuel is discharged from the fuel supply system of the fuel injection valve into a combustion chamber of the internal combustion engine. The method according to the invention is provided for internal combustion engines with at least one fuel injection valve.Type: GrantFiled: September 21, 1999Date of Patent: May 1, 2001Assignee: DaimlerChrysler AGInventors: Alexander Anderson, Gunter Karl, Rudolf Klein, Stephan Kramer, Peter Lautenschutz, Johannes Leweux, Christoph Lux, Gregor Renner, Klaus Rossler, Matthias Schumacher
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Patent number: 5943894Abstract: A method of rolling plates from input stock in several successively arranged work steps, wherein, depending on the desired end product, different numbers of n passes are carried out in one or more roll stands, preferably in a hot-rolling reversing stand. From a pass n-k to a pass n-1, greater pass reductions (smaller strip thicknesses) are rolled at the strip beginning than at the strip end, wherein k is a counting number in the range of from 1 to n-1.Type: GrantFiled: November 4, 1997Date of Patent: August 31, 1999Assignee: SMS Schloemann-Siemag AktiengesellschaftInventor: Stephan Kramer
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Patent number: 5941208Abstract: Otto internal-combustion engines having one injector respectively per cylinder for the internal mixture formation can be operated at full load or high partial load by fuel injection in the suction stroke of the piston and, at medium or low partial load, with a compression stroke injection. The compression stroke injection, which is advantageous in this load range, because of low average combustion space temperatures and the tendency to form deposits in the combustion space because of residues of liquid fuel and the resulting impaired operating conditions, can partially be carried out only to a limited degree.Type: GrantFiled: November 4, 1997Date of Patent: August 24, 1999Assignee: Daimler-Benz AktiengesellschaftInventors: Andreas Biemelt, Christian Enderle, Stephan Kramer, Klaus Rossler, Bernd Baur, Peter Hohner, Gunter Karl, Roland Kemmler
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Patent number: 5910184Abstract: A production plant for producing hot-rolled flat products includes a rolling train composed of a plurality of roll stands, a run-out table with devices for cooling the hot strip, and with subsequently arranged coiling machines for coiling the strip. At least the first roll stand of the rolling train is a reversing stand. At least one reeling furnace each is arranged in front of and following the reversing stand. A controllable cooling unit is provided between the reversing stand and the reeling furnace in front of the reversing stand.Type: GrantFiled: August 7, 1997Date of Patent: June 8, 1999Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Gunter Kneppe, Dieter Rosenthal, Stephan Kramer
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Patent number: 5771732Abstract: A Steckel mill or coiler rolling mill includes at least one reversing stand and drivers and coiler furnaces arranged on the entry side and the exit side of the reversing stand, wherein the reversing stand, the drivers and the coiler furnaces are connected to one another through roller conveyors for the strip to be rolled. At least one heating unit is provided in at least one of the sections formed between the coiler furnaces and the reversing stand, wherein the heating unit covers at least a portion of the section.Type: GrantFiled: April 19, 1996Date of Patent: June 30, 1998Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Stephan Kramer, Dieter Rosenthal, Peter Sudau
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Patent number: 5743125Abstract: A production plant for producing hot-rolled flat products includes a rolling train composed of a plurality of roll stands, a run-out table with devices for cooling the hot strip, and with subsequently arranged coiling machines for coiling the strip. At least the first roll stand of the rolling train is a reversing stand. At least one reeling furnace each is arranged in front of and following the reversing stand. A controllable cooling unit is provided between the reversing stand and the reeling furnace in front of the reversing stand.Type: GrantFiled: August 23, 1996Date of Patent: April 28, 1998Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Gunter Kneppe, Dieter Rosenthal, Stephan Kramer
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Patent number: 5740776Abstract: In a method of operating an internal combustion engine with direct injection of fuel into an engine combustion chamber during a compression stroke of a respective piston wherein first a main fuel volume is injected and subsequently an ignition fuel volume is injected into the combustion chamber, the injection of the main fuel volume is initiated only after about 3/10 of the compression stroke of the piston has been completed.Type: GrantFiled: January 17, 1997Date of Patent: April 21, 1998Assignee: Daimler-Benz AGInventors: Christian Enderle, Stephan Kramer, Stephan Pischinger, Klaus Rossler