Patents by Inventor Gerald Nitzl
Gerald Nitzl 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: 11033957Abstract: A ceramic refractory stopper, shaped as a rod with a total axial length LS, comprising a) a stopper body (12) of an axial length LB, a first end section (12U) of which being equipped with means to fasten the stopper body (12) to a raise and lowering device, and a second end section (12L) of which being followed by b) a dome-like stopper head (14) of an axial length LH, wherein c) the stopper body (12) features at least one outer planar surface section (P1, P2, P3), which extends along at least 50% of the axial length LB of the stopper body (12).Type: GrantFiled: March 21, 2016Date of Patent: June 15, 2021Assignee: Refractory Intellectual Property GmbH & Co. KGInventor: Gerald Nitzl
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Publication number: 20190099805Abstract: The invention relates to a ceramic refractory stopper, shaped as a rod with a total axial length LS, comprising a) a stopper body (12) of an axial length LB, a first end section (12U) of which being equipped with means to fasten the stopper body (12) to a raise and lowering device, and a second end section (12L) of which being followed by b) a dome-like stopper head (14) of an axial length LH, wherein c) the stopper body (12) features at least one outer planar surface section (P1, P2, P3), which extends along at least 50% of the axial length LB of the stopper body (12).Type: ApplicationFiled: March 21, 2016Publication date: April 4, 2019Inventor: Gerald Nitzl
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Patent number: 9815113Abstract: The invention relates to a refractory submerged entry nozzle (also called SEN or casting nozzle) especially but not limited for use in a continuous casting process for producing steel.Type: GrantFiled: April 15, 2014Date of Patent: November 14, 2017Assignee: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Yong Tang, Gerald Nitzl
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Patent number: 9802249Abstract: The invention relates to a ceramic refractory stopper (a stopper device) for controlling a flow of molten metal at an outlet opening of a metallurgical vessel, such as a tundish.Type: GrantFiled: March 22, 2013Date of Patent: October 31, 2017Assignee: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Gerald Nitzl, Arno Stranimaier, Hans-Jürgen Haslinger, Helmut Kaufmann
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Patent number: 9757799Abstract: An exemplary embodiment relates to a submerged entry nozzle (SEN) for use in metallurgy, in particular for transporting a metal melt from a first metallurgical unit to a second metallurgical unit, for example during slab production in continuous casting of ferrous and non-ferrous melts. The SEN is called nozzle hereinafter.Type: GrantFiled: January 6, 2014Date of Patent: September 12, 2017Assignee: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Gerald Nitzl, Hans-Jurgen Haslinger
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Patent number: 9333557Abstract: The present invention relates to a nozzle for guiding a metal melt from a first apparatus to a second apparatus, in particular it relates to a submerged entry nozzle for guiding a stream of a metal melt (steel melt) from a metallurgical melting vessel (like a tundish) into a mold (like an ingot), both of which may also be called “reservoir”.Type: GrantFiled: June 27, 2012Date of Patent: May 10, 2016Assignee: REFRACTORY INTELLECTUAL PROPERTY GMBH & Co. KGInventors: Gerald Nitzl, Yong Tang, Arno Stranimaier
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Patent number: 9302321Abstract: The invention relates to a ceramic refractory stopper (a stopper device) for controlling a flow of molten metal at an outlet opening of a metallurgical vessel, such as a tundish.Type: GrantFiled: June 28, 2012Date of Patent: April 5, 2016Assignee: REFRACTORY INTELLECTUAL PROPERTY GmbH & Co.Inventors: Gerald Nitzl, Arno Stranimaier, Hans-Jurgen Haslinger, Helmut Kaufmann
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Publication number: 20160082509Abstract: The invention relates to a refractory submerged entry nozzle (also called SEN or casting nozzle) especially but not limited for use in a continuous casting process for producing steel.Type: ApplicationFiled: April 15, 2014Publication date: March 24, 2016Inventors: Yong Tang, Gerald Nitzl
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Publication number: 20150352636Abstract: An exemplary embodiment relates to a submerged entry nozzle (SEN) for use in metallurgy, in particular for transporting a metal melt from a first metallurgical unit to a second metallurgical unit, for example during slab production in continuous casting of ferrous and non-ferrous melts. The SEN is called nozzle hereinafter.Type: ApplicationFiled: January 6, 2014Publication date: December 10, 2015Inventors: Gerald Nitzl, Hans-Jurgen Haslinger
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Patent number: 9168586Abstract: Stopper rod having an elongate body with an inlet at an upper first end and an outlet at a lower second end. The second end of the body defines a nose for insertion into a tundish outlet. A continuous axial bore extends through the body from the inlet in the first end to the outlet in the second end. A restrictor having an inlet, an outlet and a passageway therebetween is positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end. A gas supply conduit is arranged to supply gas into the axial bore above the inlet of the restrictor.Type: GrantFiled: November 12, 2008Date of Patent: October 27, 2015Assignee: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO KGInventors: Gerald Nitzl, Norman Edward Rogers
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Publication number: 20140232047Abstract: The invention relates to a ceramic refractory stopper (a stopper device) for controlling a flow of molten metal at an outlet opening of a metallurgical vessel, such as a tundish.Type: ApplicationFiled: March 22, 2013Publication date: August 21, 2014Inventors: Gerald Nitzl, Arno Stranimaier, Hans-Jürgen Haslinger, Helmut Kaufmann
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Publication number: 20140217654Abstract: The invention relates to a ceramic refractory stopper (a stopper device) for controlling a flow of molten metal at an outlet opening of a metallurgical vessel, such as a tundish.Type: ApplicationFiled: June 28, 2012Publication date: August 7, 2014Applicant: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Gerald Nitzl, Arno Stranimaier, Hans-Jurgen Haslinger, Helmut Kaufmann
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Patent number: 8758672Abstract: Nozzle for guiding molten metal, including an inlet at an upstream first end, at least one outlet towards a downstream second end, and an inner surface between the inlet and the outlet defining a bore through the nozzle having a throat region adjacent the inlet. An annular channel is provided in the inner surface of the nozzle, and a fluid supply is arranged to introduce fluid into the bore via the annular channel or downstream thereof. The throat region has a convexly curved surface and the annular channel is located within or adjacent the convexly curved surface of the throat region.Type: GrantFiled: January 21, 2009Date of Patent: June 24, 2014Assignee: Refractory Intellectual Property GmbH & Co KGInventors: Gerald Nitzl, John Davies
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Publication number: 20140103079Abstract: The present invention relates to a nozzle for guiding a metal melt from a first to a second means, in particular it relates to a submerged entry nozzle for guiding a stream of a metal melt (steel melt) from a metallurgical melting vessel (like a tundish) into a mould (like an ingot), both of which may also be called “reservoir”.Type: ApplicationFiled: June 27, 2012Publication date: April 17, 2014Applicant: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Gerald Nitzl, Yong Tang, Arno Stranimaier
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Patent number: 8517231Abstract: The invention relates to an immersion nozzle, for example of the kind used for continuously casting a metal melt.Type: GrantFiled: October 29, 2009Date of Patent: August 27, 2013Assignee: Refractory Intellectual Property GmbH & Co. KGInventors: Gernot Hackl, Gerald Nitzl
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Publication number: 20120055957Abstract: A stopper rod comprises an elongate body having an inlet at an upper first end and an outlet at a lower second end. The second end of the body defining a nose for insertion into a tundish outlet. A continuous axial bore extends through the body from the inlet in the first end to the outlet in the second end. A restrictor having an inlet, an outlet and a passageway therebetween, is positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end. A gas supply conduit is arranged to supply gas into the axial bore above the inlet of the restrictor.Type: ApplicationFiled: November 12, 2008Publication date: March 8, 2012Applicant: Refactory Intellectual Property GmbH & Co KGInventors: Gerald Nitzl, Norman Edward Rogers
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Publication number: 20120001372Abstract: The invention relates to a refractory ceramic plus for regulating a metal melt flowing past in the region of an outlet opening of a metallurgical melting vessel, for example of a tundish.Type: ApplicationFiled: February 13, 2010Publication date: January 5, 2012Applicant: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Gerald Nitzl, Christoph Eglsäer
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Publication number: 20110315721Abstract: A nozzle (410) for guiding molten metal comprises an inlet (106) at an upstream first end and at least one outlet (210) towards a downstream second end. An inner surface (117) is provided between the inlet (106) and the at least one outlet (210) to define a bore (118) through the nozzle (410). The bore (118) has a throat region (200) adjacent the inlet (106). An annular channel (420) is provided in the inner surface of the nozzle (410). A fluid supply means (900) is arranged to introduce fluid into the bore (118) via the annular channel (420) or downstream thereof. The throat region (200) has a convexly curved surface and the annular channel (420) is located within or adjacent the throat region (200). The invention also provides for a method of controlling the flow of molten metal through a nozzle (410), as described above, and a system for controlling the flow of molten metal.Type: ApplicationFiled: January 21, 2009Publication date: December 29, 2011Inventors: Gerald Nitzl, John Davies
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Patent number: D605670Type: GrantFiled: May 16, 2006Date of Patent: December 8, 2009Assignee: Refractory Intellectual Property GmbH & Co. KGInventors: Thomas Wagner, Gerald Nitzl
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Patent number: D605671Type: GrantFiled: April 8, 2008Date of Patent: December 8, 2009Assignee: Refractory Intellectual Property GmbH & Co. KGInventors: Gerald Nitzl, John Morris, Justin Vincent Singleton, Donald R. Zacharias, Eric Thomas Wotsch, Megan Joann Quick