Patents by Inventor Wilhelm Schulze
Wilhelm Schulze 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: 8197595Abstract: A method for producing thin silicon rods using a floating zone crystallization process includes supplying high frequency (HF) current to a flat induction coil having a central opening, a plurality of draw openings and a plate with a slot as a current supply of the HF current so as to provide a circumfluent current to the central opening. An upper end of a raw silicon rod is heated by induction using the flat induction coil so as to form a melt pool. A thin silicon rod is drawn upwards through each of the plurality of draw openings in the flat induction coil from the melt pool without drawing a thin silicon rod through the central opening having the circumfluent current.Type: GrantFiled: January 19, 2010Date of Patent: June 12, 2012Assignee: PV Silicon Forschungs und Produktions GmbHInventors: Helge Riemann, Friedrich-Wilhelm Schulze, Joerg Fischer, Matthias Renner
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Publication number: 20110314869Abstract: A method for producing thin silicon rods using a floating zone crystallization process includes supplying high frequency (HF) current to a flat induction coil having a central opening, a plurality of draw openings and a plate with a slot as a current supply of the HF current so as to provide a circumfluent current to the central opening. An upper end of a raw silicon rod is heated by induction using the flat induction coil so as to form a melt pool. A thin silicon rod is drawn upwards through each of the plurality of draw openings in the flat induction coil from the melt pool without drawing a thin silicon rod through the central opening having the circumfluent current.Type: ApplicationFiled: January 19, 2010Publication date: December 29, 2011Applicant: PV Silicon Forschungs und Produktions GmbHInventors: Helge Riemann, Friedrich-Wilhelm Schulze, Joerg Fischer, Matthias Renner
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Patent number: 7097548Abstract: The invention is based on an insertable tool with a rotationally driven disk-shaped hub (10, 12), to which a grinding means (14) is secured in the radially outer region. It is proposed that the hub (10, 12) is embodied with a flexural strength that varies in the radial direction.Type: GrantFiled: December 14, 2001Date of Patent: August 29, 2006Assignees: Robert Bosch GmbH, Tyrolit Schleifmittel Swarovski K.G.Inventors: Harald Krondorfer, Markus Heckmann, Joachim Schadow, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Patent number: 6902471Abstract: The invention is based on an insertable tool having a rotationally drivable, disk-shaped hub (10, 12), on which a grinding means (14) forming a cutoff disk, grinding disk, roughing disk, or abrasive disk is secured in the radially outer region. It is proposed that the grinding means (14) and the hub (10, 12) are joined via joining means (26) in the manner of a positive connection at least in the direction of rotation.Type: GrantFiled: January 23, 2002Date of Patent: June 7, 2005Assignees: Robert Bosch GmbH, Tyrolit Schleifmittelwerke Swarovski K.G.Inventors: Harald Krondorfer, Markus Heckmann, Joachim Schadow, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Patent number: 6869346Abstract: The invention is based on a tool receiver for a grinder, in particular for a handheld angle grinder (10), having a carrier device (12, 14, 16, 182, 184, 300), via which an application tool (18, 32, 186, 188) can be actively connected to a drive shaft (54). It is proposed that the application tool (18, 32, 186, 188) be actively connectable to the carrier device (14, 16, 182, 184) via at least one detent element (24, 26, 190, 192, 194, 196, 198, 200, 302) movable against a spring force that snaps into place in an operating position of the application tool (18, 32, 186, 188) and immobilizes the application tool (18, 32, 186, 188) with positive engagement.Type: GrantFiled: March 31, 2001Date of Patent: March 22, 2005Assignees: Robert Bosch GmbH, Tyrolit Schleifmittel Swarovski K.G.Inventors: Dieter Wendt, Harald Krondorfer, Ralph Dammertz, Markus Heckmann, Joachim Schadow, Thomas Schomisch, Marco Brancato, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Patent number: 6786811Abstract: A grinding machine tool receptacle for a hand-guided angle grinding machine has a slaving device by which an insert tool is operatively connectable to a drive shaft, the insert tool is operatively connectable to the slaving device via at least one detent element supported movably counter to a spring element, which detent element snaps into place in an operating position of the insert tool driven by the spring element and fixes the insert tool by positive engagement, the detent element is displaceable in the axial direction counter to the spring element, and the insert tool is connected to the slaving device in the circumferential direction via at least a first element and in the axial direction via at least a second element, with the second element arranged for fixing of the insert tool with a spring force.Type: GrantFiled: February 20, 2002Date of Patent: September 7, 2004Assignees: Robert Bosch GmbH, Tyrolit Schleifmittel Swarovski K.G.Inventors: Harald Krondorfer, Ralph Dammertz, Zaal-Azhar Alias, Markus Heckmann, Joachim Schadow, Thomas Schomisch, Marco Brancato, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Publication number: 20030176153Abstract: The invention is based on an insertable tool having a rotationally drivable, disk-shaped hub (10, 12), on which a grinding means (14) forming a cutoff disk, grinding disk, roughing disk, or abrasive disk is secured in the radially outer region.Type: ApplicationFiled: April 21, 2003Publication date: September 18, 2003Inventors: Harald Krondorfer, Markus Heckmann, Joachim Schadow, Christof Hoelzl, Johan Huber, Wilhelm Schulze
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Publication number: 20030162487Abstract: The invention is based on an insertable tool with a rotationally driven disk-shaped hub (10, 12), to which a grinding means (14) is secured in the radially outer region.Type: ApplicationFiled: March 19, 2003Publication date: August 28, 2003Inventors: Harald Krondorfer, Markus Heckmann, Joachim Schadow, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Publication number: 20030129933Abstract: The invention is based on a tool receiver for a grinder, in particular for a handheld angle grinder (10), having a carrier device (12, 14, 16, 182, 184, 300), via which an application tool (18, 32, 186, 188) can be actively connected to a drive shaft (54).Type: ApplicationFiled: March 1, 2002Publication date: July 10, 2003Inventors: Dieter Wendt, Harald Krondorfer, Ralph Dammertz, Markus Heckmann, Joachim Schadow, Thomas Schomisch, Marco Brancato, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Publication number: 20030104773Abstract: The invention is based on a grinding machine tool receptacle, in particular for a hand-guided angle grinding machine (10), having a slaving device (12, 14, 16, 300), by way of which an insert tool (18, 32) can be operatively connected to a drive shaft (54).Type: ApplicationFiled: February 20, 2002Publication date: June 5, 2003Inventors: Harald Krondorfer, Ralph Dammertz, Zaal-Azhar Alias, Markus Heckmann, Joachim Schadow, Thomas Schomisch, Marco Brancato, Christof Hoelzl, Johann Huber, Wilhelm Schulze
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Patent number: 6082060Abstract: For simply affixing flat bodies, including solar modules, onto a support, Z-shaped metal profiles may be glued on the bodies, thus acting at the same time to affix the bodies and as a protective device for the edges of the bodies during transport.Type: GrantFiled: June 24, 1998Date of Patent: July 4, 2000Assignee: Siemens Solar GmbHInventors: Ernst Bauer, Friedrich Wilhelm Schulze
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Patent number: 5620528Abstract: A solar cell has electrical conductors applied on a pattern of electric contacts on a front surface and extending transversely relative thereto with a portion projecting beyond the edge of the solar cell. The formation of the electrical pattern includes at least two elongated portions interconnected by a return portion which extends beyond the one edge. This return portion provides a stiffening suitable for reliable interconnection to an additional solar cell to achieve a connection of two conductors in the projecting region.Type: GrantFiled: September 27, 1995Date of Patent: April 15, 1997Assignees: Siemens Solar GmbH, Siemens Solar Industries International, Inc.Inventors: Reinhart Schade, Gerhard Lehner, Adolf Muenzer, Friedrich-Wilhelm Schulze, Robert Wieting
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Patent number: 4971772Abstract: An inside lining for the reaction chamber of an electric low shaft furnace, particularly for producing high-purity silicon from silicon oxide by carbothermic reduction, is provided which has a melting crucible of dense graphite and a thermal insulation, whereby at least the floor of the reaction chamber has an inside lining of high-purity carbon. The inside lining is constructed from graphite, graphite grits or lampblack. The inside lining provides good thermal insulation and does not further contaminate the molten metal due to furnace materials. The inside lining prevents a loss of material in that seepage of molten metal into the insulation is prevented by a rapid dropoff of the temperature in the insulation below the melting point of the metal.Type: GrantFiled: February 26, 1990Date of Patent: November 20, 1990Assignee: Siemens AktiengesellschaftInventors: Hubert Aulich, Friedrich-Wilhelm Schulze, Benedikt Strake
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Patent number: 4685950Abstract: In a process for improving the smoothness of the surfaces of foils made from thermoplastics materials, particularly glass, the foil is stretched in two directions or dimensions. In a particular method, the foil is laid on top of a first frame and subsequently heated to a temperature which lies in a temperature range within which the foil starts to soften. A second frame which is at the same temperature as that of the foil is then placed on top of the foil so that the latter is effectively clamped between the frames. The two frames and foil is then cooled. The material chosen for the frames is one having a coefficient of thermal expansion smaller than or equal to that of the material of the foil.Type: GrantFiled: January 15, 1986Date of Patent: August 11, 1987Assignee: Schott GlaswerkeInventor: Hans-Wilhelm Schulze
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Patent number: 4643833Abstract: In a method for separating solid reaction products from silicon produced in an arc furnace, molten silicon produced in the arc furnace in a reduction of SiO.sub.2 and carbon is filtered through a heated layer composed of SiC/Si after a so-called holding phase at a temperature in a region above a melting point of the silicon. The layer is preferably fashioned as a bottom plate of a crucible. The melt has eliminated from it SiO.sub.2 and SiC particles contained therein. The method serves for the production of silicon for solar cells. Due to the separation of SiO.sub.2 and SiC out of the molten silicon, an efficiency of above 10% is achieved in the solar cells fabricated from this material.Type: GrantFiled: April 23, 1985Date of Patent: February 17, 1987Assignee: Siemens AktiengesellschaftInventors: Hubert Aulich, Friedrich-Wilhelm Schulze
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Patent number: 4460556Abstract: Highly purified starting materials for the production of silicon suitable for fabrication of solar cells are produced via the carbo-thermal reduction process. A carbon-containing material with impurities therein, either by itself or admixed with glass bodies, which are attained from a melt of quartz sand and glass-forming additives formed into a fiber form and pulverized, is converted into a granulate form with the aid of a bonding agent. The resultant granulates are contacted with a hot inorganic acid, such as 3N HCl at about 90.degree. C., to extract substantially all impurities from the granulates, which can be in pellet or tablet form. The resultant purified pellets are then directly charged into an electrical arc furnace to yield solar-quality silicon. With this process, highly purified SiO.sub.2 and highly purified carbon are produced in a simple and cheap manner. The impurity level for boron, phosphorus and transition metal in these starting materials is less than about 10 ppm.Type: GrantFiled: April 20, 1983Date of Patent: July 17, 1984Assignee: Siemens AktiengesellschaftInventors: Hubert Aulich, Karl-Heinz Eisenrith, Friedrich-Wilhelm Schulze, Hans-Peter Urbach
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Patent number: 4203264Abstract: Fireproof building element with a multi-sheet glazing unit of glass or glass ceramic characterized in that at least one of the glass sheets is a fire resistant glass sheet. The building element contains one or more high heat reflective foils arranged between the sheets at a distance from the fire resistant glazing unit. The foils can be put in a rolled or folded form between the two sheets of the building element such that the visible area is not covered, and they can, in the event of a fire, be spread out completely between the sheets.Type: GrantFiled: February 16, 1978Date of Patent: May 20, 1980Assignee: JENAer Glaswerk, SchottInventors: Werner Kiefer, Dieter Krause, Herwig Scheidler, Hans-Wilhelm Schulze, Klaus Kristen
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Patent number: 4153215Abstract: The device for severing and laying on a new reel a web wound in a turn-over type winding machine having a rotary support for moving a plurality of reels about a circular path comprises a sliding carriage movable in two opposite directions relative to the circular path, a swingable contact roller arranged on the sliding carriage and operable for taking a normal working position outside the circular path in which it contacts the web being wound on a first reel and respectively a severing and laying-on position in which it contacts inside the circular path the web to be wound on a second empty reel; web severing means supported on the sliding member and including a swingable guiding roller and a swingable severing member, the guiding roller being operable to take a normal idling position outside the circular path and respectively a laying-on position in which it contacts inside the circular path the web wound on said first reel, and the severing member being operable to take a normal idling position outside theType: GrantFiled: May 10, 1978Date of Patent: May 8, 1979Assignee: Maschinenbau Greene GmbH & Co KGInventor: Wilhelm Schulze
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Patent number: 4004747Abstract: There is described a device for longitudinally slitting a web and for separating the separated portions thereof before they are fed onto a takeup reel or core.Type: GrantFiled: June 23, 1975Date of Patent: January 25, 1977Assignee: Maschinenbau Greene GmbH & Co., KGInventor: Wilhelm Schulze
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Patent number: D426560Type: GrantFiled: May 21, 1999Date of Patent: June 13, 2000Assignee: Tyrolit SchleifmittelwerkeInventors: Norbert Texler, Mag. Christof Holzl, Johann Huber, Wilhelm Schulze