Patents by Inventor Christian Francesconi
Christian Francesconi 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: 9077156Abstract: The invention relates to a spark plug of an internal combustion engine, preferably for spark-ignition gas engines, comprising a spark plug housing that surrounds an insulating body and comprising a center electrode and at least one ground electrode supported by a ground electrode carrier, wherein the ignition surface of the center electrode and the ignition surface of the ground electrode are surrounded by a wall, which forms a chamber open on the combustion chamber side. According to the invention, the ground electrode carrier, as viewed perpendicularly to the longitudinal axis (A) of the spark plug, is spaced further apart from the center electrode than the outer surface of the wall of the chamber therefrom and supports at least one finger-shaped ground electrode, which extends into the chamber through an opening in the wall, wherein the ignition surface of the ground electrode lies at the same height as the ignition surface of the center electrode in the chamber.Type: GrantFiled: February 20, 2012Date of Patent: July 7, 2015Inventor: Christian Francesconi
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Publication number: 20130313960Abstract: The invention relates to a spark plug of an internal combustion engine, preferably for spark-ignition gas engines, comprising a spark plug housing that surrounds an insulating body and comprising a center electrode and at least one ground electrode supported by a ground electrode carrier, wherein the ignition surface of the center electrode and the ignition surface of the ground electrode are surrounded by a wall, which forms a chamber open on the combustion chamber side. According to the invention, the ground electrode carrier, as viewed perpendicularly to the longitudinal axis (A) of the spark plug, is spaced further apart from the center electrode than the outer surface of the wall of the chamber therefrom and supports at least one finger-shaped ground electrode, which extends into the chamber through an opening in the wall, wherein the ignition surface of the ground electrode lies at the same height as the ignition surface of the center electrode in the chamber.Type: ApplicationFiled: February 20, 2012Publication date: November 28, 2013Inventor: Christian Francesconi
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Patent number: 8143772Abstract: The invention relates to a spark plug of an internal combustion engine, especially for use in Otto gas engines. Said spark plug comprises, supported by an insulating body (1), a preferably one-piece spark plug shell (2) and a center electrode (3), which is especially rod-shaped or has a plurality of electrode fingers, and at least one ground electrode (4), preferably a plurality of ground electrodes, the center electrode (3) and the at least one ground electrode (4) being surrounded by a chamber, especially a pre-chamber (5a) or a swirl chamber (5b) supported by the spark plug shell (2), or being located inside said chamber (5a, 5b).Type: GrantFiled: October 24, 2008Date of Patent: March 27, 2012Inventor: Christian Francesconi
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Publication number: 20110089803Abstract: The invention relates to a spark plug of an internal combustion engine, especially for use in Otto gas engines. Said spark plug comprises, supported by an insulating body (1), a preferably one-piece spark plug shell (2) and a center electrode (3), which is especially rod-shaped or has a plurality of electrode fingers, and at least one ground electrode (4), preferably a plurality of ground electrodes, the center electrode (3) and the at least one ground electrode (4) being surrounded by a chamber, especially a pre-chamber (5a) or a swirl chamber (5b) supported by the spark plug shell (2), or being located inside said chamber (5a, 5b).Type: ApplicationFiled: October 24, 2008Publication date: April 21, 2011Inventor: Christian Francesconi
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Patent number: 7615914Abstract: A spark plug of an internal combustion engine, in particular for use in Otto-cycle gas engines, comprising an insulator body, a base central electrode, at least one ground electrode and at least one swirl chamber, wherein the electrodes of the spark plug are surrounded by a wall, which in particular is in the form of a surface of a cylinder, of the swirl chamber, wherein at least one ground electrode carrier arrangement (8) with a plurality of inwardly facing, preferably flat ground electrodes (9) or a plurality of ground electrode carriers (6) each with inwardly facing, preferably flat ground electrodes (9) is or are arranged at the wall (13) of the swirl chamber (3).Type: GrantFiled: June 5, 2002Date of Patent: November 10, 2009Assignee: GE Jenbacher GmbH & Co OHGInventors: Christian Francesconi, Christoph Egger, Johann Klausner, Friedrich Gruber
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Patent number: 7408293Abstract: A spark plug, in particular for use in internal combustion engines, includes a spark plug casing and a ground electrode carrier casing. The ground electrode carrier casing has at least two ground electrode carrier casing portions having mutually different materials and/or the ground electrode carrier casing is of a different material from the spark plug casing.Type: GrantFiled: September 20, 2004Date of Patent: August 5, 2008Assignee: GE Jenbacher GmbH & Co OHGInventors: Christian Francesconi, Christoph Egger
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Patent number: 7105991Abstract: A spark plug is disclosed. The spark plug has a ceramic insulator body and a center electrode that is housed at least partially in a bore in the insulator body. The center electrode is sealed off from the insulator body by at least one sealing ring surrounding the center electrode that contains material that is plastically deformable by compression.Type: GrantFiled: July 22, 2003Date of Patent: September 12, 2006Assignee: Jenbacher AktiengesellschaftInventors: Christoph Egger, Christian Francesconi
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Publication number: 20060132930Abstract: Lens for a laser-ignited internal combustion engine, with an at least approximately spherical basic shape, the lens (1) having an aspherical region (3) which is formed so that the lens (1) is at least approximately free from spherical aberration.Type: ApplicationFiled: December 19, 2005Publication date: June 22, 2006Inventors: Herbert Kopecek, Martin Weinrotter, Christian Francesconi, Ernst Winter, Johann Klausner
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Patent number: 6992426Abstract: A spark plug of an internal combustion engine, in particular for use in Otto-cycle gas engines, having an insulator body, at least one fixed ground electrode carrier arrangement and at least one fixed central electrode carrier, wherein a spark plug housing having at least two parts encloses the insulator body, wherein the spark plug housing has a lower housing portion and an upper housing portion, wherein at least the combustion chamber-side part of the insulator body is pressure-resistantly, preferably completely, enclosed by the lower housing portion jointly with the upper housing portion.Type: GrantFiled: June 5, 2002Date of Patent: January 31, 2006Assignee: Jenbacher AktiengesellschaftInventors: Christian Francesconi, Christoph Egger
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Publication number: 20050174026Abstract: Spark plug with an, in particular ceramic, insulator body and a center electrode, wherein said center electrode is housed at least partially in a bore in said insulator body, said center electrode being sealed off from said insulator body—preferably exclusively—by at least one sealing ring surrounding said center electrode, said sealing ring containing material that is plastically deformable by compression.Type: ApplicationFiled: July 22, 2003Publication date: August 11, 2005Inventors: Christoph Egger, Christian Francesconi
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Publication number: 20050062386Abstract: A spark plug, in particular for use in internal combustion engines, comprising a spark plug casing (2) and a ground electrode carrier casing (3) wherein the ground electrode carrier casing (3) has at least two ground electrode carrier casing portions (3?, 3?) having mutually different materials and/or the ground electrode carrier casing (3) is of a different material from the spark plug casing (2).Type: ApplicationFiled: September 20, 2004Publication date: March 24, 2005Inventors: Christian Francesconi, Christoph Egger
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Publication number: 20040070323Abstract: A spark plug of an internal combustion engine, in particular for use in Otto-cycle gas engines, comprising an insulator body (1), at least one fixed ground electrode carrier arrangement and at least one fixed central electrode carrier, wherein a spark plug housing having at least two parts (3, 4) encloses the insulator body, wherein the spark plug housing has a lower housing portion (4) and an upper housing portion (3), wherein at least the combustion chamber-side part of the insulator body (1) is pressure-resistantly, preferably completely, enclosed by the lower housing portion (4) jointly with the upper housing portion (3).Type: ApplicationFiled: June 5, 2002Publication date: April 15, 2004Inventors: Christian Francesconi, Christoph Egger
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Publication number: 20020180326Abstract: A spark plug of an internal combustion engine, in particular for use in Otto-cycle gas engines, comprising an insulator body, a base central electrode, at least one ground electrode and at least one swirl chamber, wherein the electrodes of the spark plug are surrounded by a wall, which in particular is in the form of a surface of a cylinder, of the swirl chamber, wherein at least one ground electrode carrier arrangement (8) with a plurality of inwardly facing, preferably flat ground electrodes (9) or a plurality of ground electrode carriers (6) each with inwardly facing, preferably flat ground electrodes (9) is or are arranged at the wall (13) of the swirl chamber (3).Type: ApplicationFiled: June 5, 2002Publication date: December 5, 2002Inventors: Christian Francesconi, Christoph Egger, Johann Klausner, Friedrich Gruber