Patents by Inventor Johan Knevels
Johan Knevels 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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Publication number: 20170045424Abstract: A sampling device for molten metals includes a carrier tube having an immersion end and a sample chamber arranged in the carrier tube. The sample chamber has an inflow conduit. The inflow conduit has an inflow opening inside the sampling chamber and an outer open end which is surrounded by a protective cap. The protective cap has a metallic body with an inner side directed toward the inflow conduit and an outer side. A layer of a material is arranged at the outer side of the metallic body. The material comprises a compound which decomposes and forms water vapor if immersed in molten steel, molten iron or molten slag.Type: ApplicationFiled: August 5, 2016Publication date: February 16, 2017Inventor: Johan KNEVELS
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Patent number: 8844386Abstract: A method is provided for analyzing samples of metal melts, wherein a sample is taken from a metal melt using a sampler having a sample chamber and which is constructed as an immersion lance. The method includes transporting the sample from the sampler through a transport conduit to the sphere of action of an analytical device, and analyzing the sample there using the analytical device.Type: GrantFiled: December 5, 2011Date of Patent: September 30, 2014Assignee: Heraeus Electro-Nite International N.V.Inventors: Francis Dams, Lihuan Song, Johan Knevels, Gerrit Broekmans
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Publication number: 20120137757Abstract: A method is provided for analyzing samples of metal melts, wherein a sample is taken from a metal melt using a sampler having a sample chamber and which is constructed as an immersion lance. The method includes transporting the sample from the sampler through a transport conduit to the sphere of action of an analytical device, and analyzing the sample there using the analytical device.Type: ApplicationFiled: December 5, 2011Publication date: June 7, 2012Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventors: Francis DAMS, Lihuan SONG, Johan KNEVELS, Gerrit BROEKMANS
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Patent number: 8141439Abstract: A device is provided for sampling metal melts, in particular molten iron and molten cast iron, with a sample chamber having an inlet opening and tellurium arranged in the sample chamber. The sample chamber contains 0.01 to 0.05 g/cm3 tellurium based on the volume of the sample chamber and the tellurium is in powder form having an average particle size of at most 150 ?m. Additionally or alternatively, the tellurium is in powder form having an average particle size of at least 150 ?m and a specific surface area of 0.03 to 0.1 m2/g.Type: GrantFiled: November 16, 2009Date of Patent: March 27, 2012Assignee: Heraeus Electro-Nite International N.V.Inventor: Johan Knevels
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Patent number: 8001856Abstract: A sampling device for molten metals is provided having a carrier tube and a sample chamber fixed in the carrier tube, with an inlet piece for the molten metal flowing into the sample chamber. In the inlet piece there is arranged an inlet tube, which has an outlet into the sample chamber and an inlet opening at its other end. The outlet as well as the inlet opening of the inlet tube has a reduced cross section relative to the central part of the inlet tube. The inlet tube is formed of quartz glass, and the wall of the inlet tube is crimped toward the axis of the inlet tube at its two ends.Type: GrantFiled: December 15, 2004Date of Patent: August 23, 2011Assignee: Heraeus Electro-Nite International N.V.Inventors: Johan Knevels, Frank Mingneau, Guido Neyens
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Publication number: 20110192324Abstract: A device is provided for use at temperatures above 1000° C. or in steel melts. The device has a body based on a material selected from at least one of high temperature-resistant hollow balls and high temperature-resistant hollow fibers. The body further contains water glass and a cement.Type: ApplicationFiled: April 19, 2011Publication date: August 11, 2011Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventor: Johan KNEVELS
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Patent number: 7876095Abstract: An apparatus is provided for determination of at least one interface of a slag layer on top of a molten metal. The apparatus has a carrier tube and a measuring head arranged on one end of the carrier tube with a body fixed within the carrier tube and an end face facing away from the carrier tube. The apparatus further includes an oscillator arranged within the measuring head and an induction coil connected with the oscillator and arranged outside of the body and in front of its end face.Type: GrantFiled: January 24, 2007Date of Patent: January 25, 2011Assignee: Heraeus Electro-Nite International N.V.Inventors: Johan Knevels, Guido Cappa
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Patent number: 7776254Abstract: A lance has a top part and a bottom part for arrangement on the sensor or sampler. The top and bottom parts are detachably connected to each other by a plug-in coupling. The plug-in coupling has two coupling parts, one arranged on the top part and the other arranged on the bottom part of the lance, that can be inserted one in the other in the longitudinal direction of the lance. One coupling part has an opening extending from its front face in the longitudinal direction of the lance and an extension formed in the peripheral direction of the coupling part. The other coupling part has a raised portion that engages the extension. A blocking device, movable in the longitudinal direction of the lance, is arranged on the top or bottom part A catch element of the blocking device is arranged at least partially between the raised portion and the opening.Type: GrantFiled: March 11, 2009Date of Patent: August 17, 2010Assignee: Heraeus Electro-Nite International N.V.Inventor: Johan Knevels
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Publication number: 20100122590Abstract: A device is provided for sampling metal melts, in particular molten iron and molten cast iron, with a sample chamber having an inlet opening and tellurium arranged in the sample chamber. The sample chamber contains 0.01 to 0.05 g/cm3 tellurium based on the volume of the sample chamber and the tellurium is in powder form having an average particle size of at most 150 ?m. Additionally or alternatively, the tellurium is in powder form having an average particle size of at least 150 ?m and a specific surface area of 0.03 to 0.1 m2/g.Type: ApplicationFiled: November 16, 2009Publication date: May 20, 2010Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventor: Johan KNEVELS
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Patent number: 7621191Abstract: An immersion probe has a probe body having a longitudinal axis and an outer surface surrounding the longitudinal axis, wherein a portion of the outer surface has sampling elements, which extend around the longitudinal axis in the peripheral direction and which have a radial dimension. A protective layer, which can be dissolved or combusted in molten steel or slag, is arranged around the sampling elements.Type: GrantFiled: September 8, 2006Date of Patent: November 24, 2009Assignee: Heraeus Electro-Nite International N.V.Inventors: Johan Knevels, Guido Cappa, Jos Truyen, Jean Claes
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Publication number: 20090230597Abstract: A lance for receiving a sensor or sampler for metal melts has a top part and a bottom part provided for arrangement on the sensor or sampler. The top part and the bottom part are detachably connected to each other by a plug-in coupling, wherein the plug-in coupling has two coupling parts that can be inserted one in the other. Of these coupling parts, one coupling part is arranged on the top part and the other coupling part is arranged on the bottom part of the lance, and the two coupling parts are inserted one in the other in the longitudinal direction of the lance. One of the two coupling parts has, on its open connection end, an opening or groove that extends from the front face of the coupling part in the longitudinal direction of the lance and has, spaced from the front face, an extension formed in the peripheral direction of the coupling part. On the other coupling part a raised portion is formed that engages in the extension.Type: ApplicationFiled: March 11, 2009Publication date: September 17, 2009Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventor: Johan Knevels
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Publication number: 20090020253Abstract: A device is provided for use at temperatures above 1000° C. or in steel melts. The device has a body based on sand, high temperature-resistant hollow balls and/or high temperature-resistant hollow fibers and contains water glass and a cement.Type: ApplicationFiled: July 17, 2008Publication date: January 22, 2009Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventor: Johan KNEVELS
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Publication number: 20070176334Abstract: An apparatus is provided for determination of at least one interface of a slag layer on top of a molten metal. The apparatus has a carrier tube and a measuring head arranged on one end of the carrier tube with a body fixed within the carrier tube and an end face facing away from the carrier tube. The apparatus further includes an oscillator arranged within the measuring head and an induction coil connected with the oscillator and arranged outside of the body and in front of its end face.Type: ApplicationFiled: January 24, 2007Publication date: August 2, 2007Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.VInventors: Johan Knevels, Guido Cappa
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Publication number: 20070056393Abstract: An immersion probe has a probe body having a longitudinal axis and an outer surface surrounding the longitudinal axis, wherein a portion of the outer surface has sampling elements, which extend around the longitudinal axis in the peripheral direction and which have a radial dimension. A protective layer, which can be dissolved or combusted in molten steel or slag, is arranged around the sampling elements.Type: ApplicationFiled: September 8, 2006Publication date: March 15, 2007Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventors: Johan KNEVELS, Guido CAPPA, Jos TRUYEN, Jean CLAES
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Publication number: 20050132823Abstract: A sampling device for molten metals is provided having a carrier tube and a sample chamber fixed in the carrier tube, with an inlet piece for the molten metal flowing into the sample chamber. In the inlet piece there is arranged an inlet tube, which has an outlet into the sample chamber and an inlet opening at its other end. The outlet as well as the inlet opening of the inlet tube has a reduced cross section relative to the central part of the inlet tube. The inlet tube is formed of quartz glass, and the wall of the inlet tube is crimped toward the axis of the inlet tube at its two ends.Type: ApplicationFiled: December 15, 2004Publication date: June 23, 2005Inventors: Johan Knevels, Frank Mingneau, Guido Neyens
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Patent number: 6883392Abstract: A sampler is provided for melts, in particular for slags lying on a molten metal, the sampler having a single- or multi-part body for arrangement in a support. The sampler has an inlet and a sample chamber with two opposing chamber walls, wherein an inlet opening is arranged in one chamber wall. In order to make possible homogeneous and stable samples, an intermediate plate with at least one through opening is arranged inside of the sample chamber spaced from the chamber walls.Type: GrantFiled: January 10, 2003Date of Patent: April 26, 2005Assignee: Heraeus Electro-Nite International N.V.Inventors: Johan Knevels, Guido GustaafAntoon Cappa, Frank Mingneau
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Patent number: 6855238Abstract: A measuring device for determining the oxygen activity in metal melts or slag melts has a measuring head arranged on the end of a carrier tube, on which head an electrochemical measuring cell is arranged. The electrochemical measuring cell has a solid electrolyte tube closed on one end, which is surrounded on the closed end and at least on a portion of its periphery by a steel tube closed on one end. A reference material and a filler material adjoining the reference material are arranged inside the solid electrolyte tube on its closed end. A metal rod is arranged as an electrode along the solid electrolyte tube in such a manner that, on the one hand, it stands in contact with the reference material and, on the other hand, it projects out of the open end of the solid electrolyte tube. The open end of the solid electrolyte tube has a closure which is constructed as a cap, which fits on the exterior of the steel tube or the solid electrolyte tube, and the closure is gas-permeable.Type: GrantFiled: January 25, 2002Date of Patent: February 15, 2005Assignee: Heraeus Electro-Nite International N.V.Inventors: Johan Knevels, Frank Mingneau
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Patent number: 6811742Abstract: A sampler for melts, in particular for slag, includes a body having an inlet and a sample chamber with an inlet opening. The inlet opening is located in a chamber wall delimited by a first metal plate with an opening. Removal of a sample from the sample chamber is simplified by arranging a second metal plate flat against the first metal plate, with the second metal plate having an opening that, together with the opening of the first metal plate, forms the inlet opening.Type: GrantFiled: September 27, 2002Date of Patent: November 2, 2004Assignee: Heraeus Electro-Nite International N.V.Inventor: Johan Knevels
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Publication number: 20030131673Abstract: A sampler is provided for melts, in particular for slags lying on a molten metal, the sampler having a single- or multi-part body for arrangement in a support. The sampler has an inlet and a sample chamber with two opposing chamber walls, wherein an inlet opening is arranged in one chamber wall. In order to make possible homogeneous and stable samples, an intermediate plate with at least one through opening is arranged inside of the sample chamber spaced from the chamber walls.Type: ApplicationFiled: January 10, 2003Publication date: July 17, 2003Applicant: HERAEUS ELECTRO-NITE INTERNATIONAL N.V.Inventors: Johan Knevels, Guido GustaafAntoon Cappa, Frank Mingneau
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Patent number: 6581482Abstract: A sampler is provided for melts, especially for slag lying on top of molten metals, having a one piece or multi-piece body arranged on a carrier. The body of the sampler has an intake and a sample chamber, wherein the intake has a surface which is at least partially formed by a slag-repellant material.Type: GrantFiled: February 16, 2001Date of Patent: June 24, 2003Assignee: Heraeus Electro-Nite International N.V.Inventors: Guido Cappa, Guido Neyens, Johan Knevels