Patents by Inventor Wolfgang Kohler
Wolfgang Kohler 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: 11492996Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: GrantFiled: February 27, 2020Date of Patent: November 8, 2022Assignee: KS Kolbenschmidt GmbHInventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Publication number: 20200191089Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: ApplicationFiled: February 27, 2020Publication date: June 18, 2020Inventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Publication number: 20190224762Abstract: The invention relates to a method for producing a cooling channel piston, wherein a blank of the cooling channel piston, which has a cavity designed as a cooling channel, is provided and wherein an inlet or outlet opening is introduced into the blank in the direction of the cooling channel, characterized in that the opening is introduced into the blank by means of a CNC-controlled circular milling process by using a special milling cutter having end cutting edges arranged in a shaft profile.Type: ApplicationFiled: June 13, 2017Publication date: July 25, 2019Inventors: Wolfgang Köhler, Dieter Krämer, Florian Leppla
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Patent number: 10221807Abstract: The arrangement relates to a method for producing a cooling duct piston for an internal combustion engine, having the steps of producing a top piston part by introducing a combustion bowl, a cooling space of a part of a cooling duct and overflow ducts, producing a bottom piston part by introducing a part of a cooling duct, and joining the piston parts, wherein at least one transfer duct is created by bores. A cooling duct piston produced by the method is disclosed.Type: GrantFiled: June 24, 2013Date of Patent: March 5, 2019Assignee: KS Kolbenschmidt GmbHInventors: Michael Albert Janssen, Wolfgang Köhler, Gerhard Luz, Franz Ratzky
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Publication number: 20180355818Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: ApplicationFiled: October 7, 2016Publication date: December 13, 2018Applicant: KS Kolbenschmidt GmbHInventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Publication number: 20180087303Abstract: The invention relates to a covering device for a tool deposition station. The covering device includes a covering as well as a mechanism for moving the covering. The mechanism for moving the covering includes a rail and a first driver which is guided by the rail. The first driver is displaceable along the rail and is connected to the covering. The covering device can be brought into an opened position by way of a displacing of the first driver along the rail in a first direction and the covering device can be brought into a covered position by way of a displacing the first driver along the rail in a second direction which is opposite to the first direction. The mechanism is configured such that the displacing of the first driver effects at least a partial translatory movement of the covering.Type: ApplicationFiled: May 26, 2016Publication date: March 29, 2018Inventors: Wolfgang Kohler, Markus Schindler
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Publication number: 20150159584Abstract: The arrangement relates to a method for producing a cooling duct piston for an internal combustion engine, having the steps of producing a top piston part by introducing a combustion bowl, a cooling space of a part of a cooling duct and overflow ducts, producing a bottom piston part by introducing a part of a cooling duct, and joining the piston parts, wherein at least one transfer duct is created by bores. A cooling duct piston produced by the method is disclosed.Type: ApplicationFiled: June 24, 2013Publication date: June 11, 2015Applicant: KS KOLBENSCHMIDT GMBHInventors: Michael Albert Janssen, Wolfgang Köhler, Gerhard Luz, Franz Ratzky
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Patent number: 8925511Abstract: A cooling channel piston has a radially circumferential cooling channel located behind a ring field. The cooling channel piston is forged from a steel material and the cooling channel is worked in by machining between an upper part below the ring field and a lower part above the piston bosses and the piston skirts. The cooling channel extends behind the ring field in the direction of an upper face of the upper part, it being provided that the cooling channel piston has above its piston bosses and piston skirts an outwardly oriented support region. A closing element, which closes the cooling channel after the production thereof, is fastened between the lower edge of the ring field and the support region.Type: GrantFiled: September 15, 2009Date of Patent: January 6, 2015Assignee: KS Kolbenschmidt GmbHInventors: Franz-Peter Allig, Wolfgang Köhler, Matthias Laqua
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Publication number: 20110265744Abstract: A cooling channel piston has a radially circumferential cooling channel located behind a ring field. The cooling channel piston is forged from a steel material and the cooling channel is worked in by machining between an upper part below the ring field and a lower part above the piston bosses and the piston skirts. The cooling channel extends behind the ring field in the direction of an upper face of the upper part, it being provided that the cooling channel piston has above its piston bosses and piston skirts an outwardly oriented support region. A closing element, which closes the cooling channel after the production thereof, is fastened between the lower edge of the ring field and the support region.Type: ApplicationFiled: September 15, 2009Publication date: November 3, 2011Applicant: KS KOLBENSCHMIDT GMBHInventors: Franz-Peter Allig, Wolfgang Köhler, Matthias Laqua
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Patent number: 6641600Abstract: A process and apparatus for the cosmetic treatment of acne vulgaris utilize irradiation of the affected skin areas with light characterized by a combination of two emission spectra, one in a blue region and the other in a red region.Type: GrantFiled: June 4, 2001Date of Patent: November 4, 2003Assignee: SLI Lichtsysteme GmbHInventor: Wolfgang Kohler
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Pipe with ribs on its inner surface forming a multiple thread and steam generator for using the pipe
Patent number: 6302194Abstract: A pipe includes a pipe wall having an inner wall surface. Ribs are disposed on the inner wall surface forming a multiple thread. The ribs define a mean inside pipe diameter and the ribs have a lead which is equal to between 0.6 and 0.9 times the square root of the mean inside pipe diameter. Such pipes may be used in a fossil-fuel steam generator, a solar-heated steam generator, or a heated steam generator serving as a waste-heat steam generator, a heat exchanger or a steam generator for absorbing after-heat in a nuclear power plant.Type: GrantFiled: November 12, 1993Date of Patent: October 16, 2001Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kastner, Wolfgang Köhler, Eberhard Wittchow -
Patent number: 6250257Abstract: A once-through steam generator having a combustion chamber. A containing wall of the combustion chamber is formed from vertically disposed evaporator tubes welded to one another in a gas-tight manner. The combustion chamber is to be capable of being used safely and reliably in a pressure range of between about 200 bar and 221 bar, while, moreover, a particularly high efficiency is to be achieved. For this purpose, according to the invention, a mass flow density m of a flow medium has the following relationship m=200+8.42 ·1012·q3[d/(d−2s)]s2·Tmax−5 in the evaporator tubes. In this case, q is the heat flow density acting on the evaporator tubes, Tmax is an admissible maximum temperature characteristic of the tube material, d is the outside diameter of the evaporator tubes and s is the wall thickness of the evaporator tubes.Type: GrantFiled: May 6, 1999Date of Patent: June 26, 2001Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kastner, Wolfgang Köhler, Eberhard Wittchow
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Patent number: 6183500Abstract: A process and an apparatus for the cosmetic treatment of acne vulgaris utilize irradiation of the affected skin areas with light characterized by a combination of two emission spectra, one in a blue region and the other in a red region.Type: GrantFiled: December 3, 1998Date of Patent: February 6, 2001Assignee: SLI Lichtsysteme GmbHInventor: Wolfgang Köhler
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Patent number: 5967097Abstract: The combustion chamber of a once-through steam generator is formed with walls of vertical tubes through which a flow medium flows from the bottom upwards. The tubes have a surface structure on their inner wall surfaces. Particularly favorable mass flow density m is established in the tubes at the load at which critical pressure prevails in the tubes according to the formula: ##EQU1## wherein q.sub.i is a heat flow density on an inner tube wall surface, T.sub.max is a maximum permissible material temperature of the tubes, T.sub.crit is a temperature of the flow medium at the critical pressure, .DELTA.T.sub.W is a temperature difference between the outer and inner wall surfaces of the tubes, and C is a constant.Type: GrantFiled: July 27, 1998Date of Patent: October 19, 1999Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kastner, Wolfgang Kohler, Eberhard Wittchow
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Patent number: 5806317Abstract: Steam is generated by conducting a medium through a line which is exposed to solar irradiation. The line has a starting point where a medium supply line issues into the line. The heated medium is conducted away from the at least one line through a drain line. The medium, prior to feeding in at the starting point, is prepared in a power plant component and the medium is supplied at a pressure which is higher than the prevailing pressure in the at least one line, and at an enthalpy which is greater than an enthalpy of saturated water in the line. The medium is fed in as water or water and steam.Type: GrantFiled: September 17, 1996Date of Patent: September 15, 1998Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kohler, Wolfgang Kastner, Konrad Kunstle
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Patent number: 5735236Abstract: In once-through flow steam generators including a burner for fossil fuels and having a vertical gas flue with essentially vertically disposed tubes, inlet ends of the tubes are connected to an inlet header and outlet ends of the tubes are connected to an outlet header. According to the invention, a pressure-equalization tube branches off from each tube at the same height. The tube is connected to a pressure-equalization vessel. The height H is chosen in such a way that in the case of an individual tube being more strongly heated between the inlet header and the branching-off point of the pressure-equalization tube, the mass flow through the individual tube increases as compared to a mean value of the heating of all of the tubes.Type: GrantFiled: June 20, 1994Date of Patent: April 7, 1998Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kastner, Wolfgang Kohler, Eberhard Wittchow
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Patent number: 5701850Abstract: A fossil-fired steam generator includes a gas flue having a surrounding wall being formed by tubes which are mutually joined gas-tightly and which are disposed substantially vertically and can conduct an upward flow through them on the medium side. The tubes in a first or lower part of the gas flue have a greater internal diameter than the tubes in a second part of the gas flue located above. On one hand, this ensures reliable cooling of the tubes. On the other hand, even additional or above-average heating of individual tubes does not lead to inadmissible temperature differences between outlets of the tubes.Type: GrantFiled: February 21, 1995Date of Patent: December 30, 1997Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kohler, Rudolf Kral, Eberhard Wittchow
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Patent number: 5662070Abstract: A once-through steam generator includes tubes together forming combustion chamber walls and carrying fossil fuel burners. The tubes are frequently provided on their inner surfaces with fins forming a multiple thread and are connected parallel to one another for conducting a coolant flow. According to the invention, the internal tube diameter is a function of a quotient, and points determined by pairs of values of the internal tube diameter and of the quotient lie in a coordinate system between a curve and a straight line. A summated mass throughput of all of the tubes at 100% steam output divided by the circumference of the gas flue in a horizontal section through the combustion chamber is used to form the quotient, and four defined points then lie on the curve which has a steady ascending slope. Application of this configuration is advantageously possible even for once-through steam generators having nominal outputs down to far below 500 MW.Type: GrantFiled: October 26, 1995Date of Patent: September 2, 1997Assignee: Siemens AktiengesellschaftInventors: Wolfgang Kastner, Wolfgang Kohler, Eberhard Wittchow
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Patent number: 5343506Abstract: A nuclear reactor installation includes a reactor pressure vessel and a reactor core in the reactor pressure vessel. A supporting and protective structure supporting the reactor pressure vessel and surrounding the reactor pressure vessel on the bottom and laterally, has a bottom region and a circumferential wall. A core catcher device for the reactor core has a collecting basin for a core melt being installed below the reactor pressure vessel. The collecting basin has a bottom wall and a jacket wall being respectively separated from the bottom region and the circumferential wall of the supporting and protective structure by a spacing gap. Cooling channels are disposed in the spacing gap at the bottom wall and the jacket wall for exterior cooling of the collecting basin with a cooling liquid. Turbulence bodies are disposed in a surface region of the bottom wall for generating a turbulent flow of the cooling liquid flowing from the inside to the outside over the bottom wall toward the jacket wall.Type: GrantFiled: June 21, 1993Date of Patent: August 30, 1994Assignee: Siemens AktiengesellschaftInventors: Josef Artnik, Dietmar Bittermann, Jurgen Eyink, Ulrich Fischer, Andreas Gobel, Sieghard Hellmann, Wolfgang Kohler, Walter Korn, Hermann Plank, Manfred Scholz, Horst Weisshaupl
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Patent number: 5249346Abstract: The present invention concerns a process for fixing holding clips (1) to a band (2) which is movable in its longitudinal direction, wherein the band (2) is deformed transversely relative to the longitudinal direction in such a way that the spacing of the band edges (3, 4) becomes less than the band width and the internal spacing of the holding elements (5, 6) provided on the holding clip (1) and the part of the band (2) which is between the band edges (3, 4) is curved forwardly out of the plane of the band defined by the band edges (3, 4), the band edges (3, 4) are brought into position between the holding elements (5, 6) and the deformation is substantially removed again so that the band edges (3, 4) substantially resume their original spacing and the holding clip (1) comes into frictional engagement with the band (2), and a corresponding apparatus.Type: GrantFiled: November 7, 1991Date of Patent: October 5, 1993Inventor: Wolfgang Kohler