Patents by Inventor Jacques Marcotte
Jacques Marcotte 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: 9714910Abstract: An apparatus to detect and measure suspended particles in a molten metal where the suspended particles have an associated noise frequency range has in addition to the electrically non-conductive barrier for immersion in the molten-metal, a device to move the molten metal through an orifice in the barrier and electrodes, a time varying excitation source that generates an AC current at a predetermined range of excitation frequency that is out of the predominant noise frequency range to generate an AC signal that is representative of the measure of the suspended particles. A detector detects and quantifies from the measurement AC signal the suspended particles. The detector can be a synchronous detector.Type: GrantFiled: October 10, 2013Date of Patent: July 25, 2017Assignee: ABB Inc.Inventors: Réal Ouellet, Jacques Marcotte, Patrick Couture, Sylvio Laplante, Bruno Simard
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Patent number: 9476850Abstract: Disclosed is a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. A first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: GrantFiled: August 14, 2015Date of Patent: October 25, 2016Assignee: Novelis Inc.Inventors: Jacques Marcotte, Yuhil Slusarenko
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Publication number: 20150355157Abstract: Disclosed is a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. A first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: ApplicationFiled: August 14, 2015Publication date: December 10, 2015Applicant: NOVELIS INC.Inventors: JACQUES MARCOTTE, YUHIL SLUSARENKO
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Patent number: 9140661Abstract: Disclosed is a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. A first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: GrantFiled: September 30, 2014Date of Patent: September 22, 2015Assignee: Novelis Inc.Inventors: Jacques Marcotte, Yuhil Slusarenko
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Publication number: 20150253267Abstract: An apparatus to detect and measure suspended particles in a molten metal where the suspended particles have an associated noise frequency range has in addition to the electrically non-conductive barrier for immersion in the molten-metal, a device to move the molten metal through an orifice in the barrier and electrodes, a time varying excitation source that generates an AC current at a predetermined range of excitation frequency that is out of the predominant noise frequency range to generate an AC signal that is representative of the measure of the suspended particles. A detector detects and quantifies from the measurement AC signal the suspended particles. The detector can be a synchronous detector.Type: ApplicationFiled: October 10, 2013Publication date: September 10, 2015Inventors: Réal Quellet, Jacques Marcotte, Patrick Couture, Sylvio Laplante, Bruno Simard
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Publication number: 20150021206Abstract: Disclosed is a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. A first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: ApplicationFiled: September 30, 2014Publication date: January 22, 2015Inventors: JACQUES MARCOTTE, YUHIL SLUSARENKO
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Patent number: 8928306Abstract: The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. An first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: GrantFiled: October 29, 2008Date of Patent: January 6, 2015Assignee: Novelis Inc.Inventors: Jacques Marcotte, Yuhil Slusarenko
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Publication number: 20090058396Abstract: The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. An first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: ApplicationFiled: October 29, 2008Publication date: March 5, 2009Inventors: Jacques Marcotte, Yuhil Slusarenko
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Patent number: 7459896Abstract: The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. An first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: GrantFiled: February 28, 2005Date of Patent: December 2, 2008Assignee: Novelis Inc.Inventors: Jacques Marcotte, Yuhil Slusarenko
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Publication number: 20050231185Abstract: The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. An first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise.Type: ApplicationFiled: February 28, 2005Publication date: October 20, 2005Inventors: Jacques Marcotte, Yuhil Slusarenko
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Publication number: 20050043633Abstract: A speculum provides visual access to a body cavity, and such instrument is used by physicians for vaginal examination. The speculum comprises a handle having a frontal portion and a rear portion slidingly secured to the frontal portion. A blade angle positioner is pivotally connected by a pivot connection in a top end portion of the handle rear portion, whereby to angulate a top blade removably secured to a top blade connector anchor at a forward projecting end of the blade angle positioner. The handle frontal portion has a bottom blade connector anchor in a top forward end portion thereof. The top and bottom blades each have a connecting end provided with clamp connectors for removable engagement with a respective one of the top and bottom blade connector anchors.Type: ApplicationFiled: August 19, 2003Publication date: February 24, 2005Inventor: Jacques Marcotte
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Patent number: 5081869Abstract: New methods and apparatus for the measurement of thermal conductivity of gases employ a single katharometer element comprising a thermistor. In one circuit the thermistor is part of a first potential divider whose output voltage is compared to that of a second reference potential divider by applying them to the inputs of a differential amplifier supplying heating current to the element. In another circuit, in which the katharometer element may be other than a thermistor, the element and a resistor are connected in series to a common reference point of the circuit and are supplied with current so that the voltages across them correspond to their respective resistances; the voltage cross the item not connected to the reference point is transferred to another circuit element that is connected to the reference point so that they can be compared directly.Type: GrantFiled: December 11, 1989Date of Patent: January 21, 1992Assignee: Alcan International LimitedInventors: Raynald Hachey, Daniel Lamarre, Jacques Marcotte
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Patent number: 4918974Abstract: A new method and apparatus for the measurement of thermal conductivity of gases employs a single katharometer element, which preferably is a thermistor, but may be a heated filament. In a preferred circuit the element is part of a first potential divider whose output voltage is compared to that of a second reference potential divider by applying them to the inputs of a differential amplifier supplying heating current to the element. If the temperature of the element changes, changing its resistance, the amplifier output changes the amount of power supplied to the katharometer element to restore it to the predetermined temperature. Passage of a gas with a different thermal characteristic over the element changes its temperature which is corrected by the circuit so that the element operates at a constant temperature. The output of the amplifier to maintain the constant temperature is therefore a measure of the gas thermal conductivity.Type: GrantFiled: February 6, 1989Date of Patent: April 24, 1990Assignee: Alcan International LimitedInventors: Raynald Hachey, Daniel Lamarre, Jacques Marcotte