Patents by Inventor FABIAN RUCH
FABIAN RUCH 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: 11959552Abstract: A piston ring system for an internal combustion engine includes a first compression piston ring (2), a second compression piston ring (4), and an oil scraper piston ring (6). The first compression piston ring (2) has a first ring body (8) with a first upper ring flank (10), a first lower ring flank (12), a first ring inner side (14), a first ring outer side (16), as well as two first abutting surfaces. A first contact region (18) of the first ring body (8) is arranged with a cylinder running surface (20) above a first piston ring center (22). At least one first oil pocket (24) is arranged below the first contact region (18) in the circumferential direction. The second compression piston ring (4) having a second ring body (26) a second upper ring flank (28), a second lower ring flank (30), a second ring inner side (32), a second ring outer side (34), as well as two second abutting surfaces.Type: GrantFiled: July 29, 2021Date of Patent: April 16, 2024Assignee: Federal-Mogul Burscheid GmbHInventors: Richard Mittler, Fabian Ruch
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Publication number: 20230272853Abstract: A piston ring system for an internal combustion engine includes a first compression piston ring (2), a second compression piston ring (4), and an oil scraper piston ring (6). The first compression piston ring (2) has a first ring body (8) with a first upper ring flank (10), a first lower ring flank (12), a first ring inner side (14), a first ring outer side (16), as well as two first abutting surfaces. A first contact region (18) of the first ring body (8) is arranged with a cylinder running surface (20) above a first piston ring center (22). At least one first oil pocket (24) is arranged below the first contact region (18) in the circumferential direction. The second compression piston ring (4) having a second ring body (26) a second upper ring flank (28), a second lower ring flank (30), a second ring inner side (32), a second ring outer side (34), as well as two second abutting surfaces.Type: ApplicationFiled: July 29, 2021Publication date: August 31, 2023Inventors: RICHARD MITTLER, FABIAN RUCH
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Publication number: 20230228329Abstract: An oil scraper ring is provided for pistons (2) of an internal combustion engine having an oil scraper piston ring groove (4) formed without at least one oil drain bore. The scraper ring includes a ring body (6) comprising an upper ring flank (8), a lower ring flank (10), a ring inner side (12), a ring outer side (14) and two abutting surfaces (16, 18). An upper oil scraper rail (20) and a lower oil scraper rail (22) extend in the circumferential direction in spaced apart relation from one another in the axial direction and extend radially to the outside from the ring outer side (14) are arranged on the ring outer side (14). Oil passages (24) running in the radial direction are arranged in a region between the upper scraper rail (20) and the lower scraper rail (22), and at least one groove (26) extends in the radial direction on the lower ring flank (10).Type: ApplicationFiled: May 31, 2021Publication date: July 20, 2023Inventors: RICHARD MITTLER, FABIAN RUCH
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Patent number: 11578799Abstract: A piston ring with improved wear properties has a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and wherein in a radial section, a running surface contour includes an upper region, a central region, and a lower region. The upper region of the running surface contour has a curvature radius Ro, which lies between the ring radius R and infinity. The central region of the running surface contour has a curvature radius Rm, which lies between the ring radius R and infinity. The lower region has a curvature radius Ru, which is smaller than the ring radius R.Type: GrantFiled: March 18, 2019Date of Patent: February 14, 2023Assignee: Federal-Mogul Burscheid GmbHInventors: Fabian Ruch, Nigel Gray, Oliver Nickisch
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Patent number: 11493129Abstract: A piston ring has a running surface, an inner surface, a lower ring flank, and an upper ring flank. A recess, extending across the perimeter in the shape of an internal angle, is located at the transition between the inner surface and the upper ring flank. The recess defines a conical first surface and a conical second surface at the piston ring. The first surface lies farther outward, when viewed in the radial direction, and farther above, when viewed in the axial direction, than the second surface. In an axial cross section, a first angle between the axial direction and the first surface lies in the range between 10° and 50°, and a second angle between the radial direction and the second surface lies in the range between 5° and 30°. A piston having a piston ring groove includes a projection on the groove bottom. A combination made from an above-mentioned piston ring and an above-mentioned piston are adapted to one another, so that the projection projects into the recess.Type: GrantFiled: September 2, 2019Date of Patent: November 8, 2022Assignee: Federal-Mogul Burscheid GmbHInventors: Richard Mittler, Fabian Ruch
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Publication number: 20220107022Abstract: A piston ring with improved wear properties has a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and wherein in a radial section, a running surface contour includes an upper region, a central region, and a lower region. The upper region of the running surface contour has a curvature radius Ro, which lies between the ring radius R and infinity. The central region of the running surface contour has a curvature radius Rm, which lies between the ring radius R and infinity. The lower region has a curvature radius Ru, which is smaller than the ring radius R.Type: ApplicationFiled: March 18, 2019Publication date: April 7, 2022Inventors: FABIAN RUCH, NIGEL GRAY, OLIVER NICKISCH
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Publication number: 20220049769Abstract: A piston ring has a running surface, an inner surface, a lower ring flank, and an upper ring flank. A recess, extending across the perimeter in the shape of an internal angle, is located at the transition between the inner surface and the upper ring flank. The recess defines a conical first surface and a conical second surface at the piston ring. The first surface lies farther outward, when viewed in the radial direction, and farther above, when viewed in the axial direction, than the second surface. In an axial cross section, a first angle between the axial direction and the first surface lies in the range between 10° and 50°, and a second angle between the radial direction and the second surface lies in the range between 5° and 30°. A piston having a piston ring groove includes a projection on the groove bottom. A combination made from an above-mentioned piston ring and an above-mentioned piston are adapted to one another, so that the projection projects into the recess.Type: ApplicationFiled: September 2, 2019Publication date: February 17, 2022Inventors: RICHARD MITTLER, FABIAN RUCH
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Patent number: 11187322Abstract: A stepped piston ring (2) includes a ring outer side (5), an upper ring flank (6), and a lower ring flank (8). The ring outer side (5) on the upper edge has a notch (10, so that only a lower portion of the ring outer side (5) forms a contact surface (4).Type: GrantFiled: January 4, 2018Date of Patent: November 30, 2021Assignee: Federal-Mogul Burscheid GmbHInventors: Jurgen Gillen, Fabian Ruch, Jorn Propper
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Patent number: 11092238Abstract: A three-piece piston oil control ring 2 has an upper, disc-shaped scraping ring 4, a lower, disc-shaped stabilising ring 6, and a circular expander 8 which has projections 10 protruding in the axial direction on an inner face. The circular expander 8 is arranged between the upper scraping ring 4 and the lower stabilising ring 6, wherein the projections 10 each bear inwardly against an inner face 14 of the scraping ring 4 or against an inner face 16 of the stabilising ring 6. An outer radius 18 of the scraping ring 4 is greater than an outer radius 20 of the lower stabilising ring 6, so that there is a radius difference ? between the scraping ring 4 and the stabilising ring 6.Type: GrantFiled: November 28, 2016Date of Patent: August 17, 2021Assignee: Federal-Mogul Burscheid GmbHInventors: Stephan Machliner, Fabian Ruch
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Patent number: 10969013Abstract: A compression piston ring is provided, in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections and concave sections alternating in the circumferential direction in a middle running face region in relation to the axial height, wherein the concave sections form profile recesses in the convexly crowned running face.Type: GrantFiled: May 22, 2017Date of Patent: April 6, 2021Assignee: Federal-Mogul Burscheid GmbHInventors: Richard Mittler, Fabian Ruch
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Patent number: 10969014Abstract: A one-piece control ring with two stripping ridges and openings that extend from the outside of the ring to the inside is provided wherein the cross section of the ring body varies in the circumferential direction. This variation is achieved with internal grooves, the cross-sectional area of which decreases in the direction of the back of the ring, and with a variation of the depth of the groove lying between the ridges.Type: GrantFiled: May 23, 2017Date of Patent: April 6, 2021Assignee: Federal-Mogul Burscheid GmbHInventors: Richard Mittler, Fabian Ruch
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Patent number: 10883600Abstract: An oil wiper ring is provided having two circumferential shoulders, the running surfaces whereof are outwardly curved, wherein the shoulder of the combustion chamber side has an axial height greater by at least a factor of 2 than the axial height of the shoulder on the crankcase side and wherein the should on the combustion chamber side has an asymmetrical crowning.Type: GrantFiled: April 26, 2017Date of Patent: January 5, 2021Assignee: Federal-Mogul Burscheid GmbHInventors: Richard Mittler, Fabian Ruch
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Patent number: 10871228Abstract: The present invention relates to a two-part oil scraper ring, which comprises an L-shaped base body and an axial stabilization element. The L-shaped base body has a ring flank leg, which is pressed against a piston ring groove flank by the axial stabilization element, and a bearing surface leg, on which a scraping web is arranged. A twist compensation is attained by means of a suitable selection—and in particular variation—of hearing surface leg length, ring flank leg length and axial position of the scraping web.Type: GrantFiled: July 5, 2017Date of Patent: December 22, 2020Assignee: FEDERAL-MOGUL BURSCHEID GMBHInventors: Fabian Ruch, Dirk Barenreuter
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Publication number: 20190346043Abstract: A stepped piston ring (2) includes a ring outer side (5), an upper ring flank (6), and a lower ring flank (8). The ring outer side (5) on the upper edge has a notch (10, so that only a lower portion of the ring outer side (5) forms a contact surface (4).Type: ApplicationFiled: January 4, 2018Publication date: November 14, 2019Inventors: JURGEN GILLEN, FABIAN RUCH, JORN PROPPER
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Publication number: 20190219168Abstract: The present invention relates to a two-part oil scraper ring, which comprises an L-shaped base body and an axial stabilization element. The L-shaped base body has a ring flank leg, which is pressed against a piston ring groove flank by the axial stabilization element, and a bearing surface leg, on which a scraping web is arranged. A twist compensation is attained by means of a suitable selection—and in particular variation—of hearing surface leg length, ring flank leg length and axial position of the scraping web.Type: ApplicationFiled: July 5, 2017Publication date: July 18, 2019Inventors: FABIAN RUCH, DIRK BARENREUTER
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Publication number: 20190178380Abstract: An oil wiper ring is provided having two circumferential shoulders, the running surfaces whereof are outwardly curved, wherein the shoulder of the combustion chamber side has an axial height greater by at least a factor of 2 than the axial height of the shoulder on the crankcase side and wherein the should on the combustion chamber side has an asymmetrical crowning.Type: ApplicationFiled: April 26, 2017Publication date: June 13, 2019Inventors: RICHARD MITTLER, FABIAN RUCH
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Publication number: 20190154152Abstract: A one-piece control ring with two stripping ridges and openings that extend from the outside of the ring to the inside is provided wherein the cross section of the ring body varies in the circumferential direction. This variation is achieved with internal grooves, the cross-sectional area of which decreases in the direction of the back of the ring, and with a variation of the depth of the groove lying between the ridges.Type: ApplicationFiled: May 23, 2017Publication date: May 23, 2019Inventors: RICHARD MITTLER, FABIAN RUCH
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Publication number: 20190136976Abstract: A compression piston ring is provided, in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections and concave sections alternating in the circumferential direction in a middle running face region in relation to the axial height, wherein the concave sections form profile recesses in the convexly crowned running face.Type: ApplicationFiled: May 22, 2017Publication date: May 9, 2019Inventors: RICHARD MITTLER, FABIAN RUCH
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Publication number: 20190113139Abstract: A three-piece piston oil control ring 2 has an upper, disc-shaped scraping ring 4, a lower, disc-shaped stabilising ring 6, and a circular expander 8 which has projections 10 protruding in the axial direction on an inner face. The circular expander 8 is arranged between the upper scraping ring 4 and the lower stabilising ring 6, wherein the projections 10 each bear inwardly against an inner face 14 of the scraping ring 4 or against an inner face 16 of the stabilising ring 6. An outer radius 18 of the scraping ring 4 is greater than an outer radius 20 of the lower stabilising ring 6, so that there is a radius difference ? between the scraping ring 4 and the stabilising ring 6.Type: ApplicationFiled: November 28, 2016Publication date: April 18, 2019Inventors: Stephan MACHLINER, Fabian RUCH
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Publication number: 20170328471Abstract: A piston ring has an annular base body 2, which is preferably open at a joint, with a U-shaped cross section, the open side of which faces inwards in the radial direction. A ring spring 4 is provided which runs in a meandering manner in the axial direction, and which pretensions the base body 2 outwards in the radial direction. In one section of the ring spring 4, which is located inside the base body, meandering loops 5 bear alternately against the shanks 3 of the U-shaped cross section. In one section of the ring spring 4, which protrudes out of the base body 2, meandering loops 6 bear alternately against the radially inwardly facing edges of the shanks 3 of the U-shaped cross section.Type: ApplicationFiled: September 15, 2015Publication date: November 16, 2017Inventors: JORN PROPPER, FABIAN RUCH