Patents Assigned to Federal-Mogul Friedberg
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Patent number: 11384436Abstract: A piston ring includes an annular body, a wear-resistant layer that is applied to the annular body by thermal spraying, and a strain-hardened run-in layer, made of an AlCuFe alloy, that is applied to the wear-resistant layer by thermal spraying.Type: GrantFiled: April 24, 2018Date of Patent: July 12, 2022Assignee: Federal-Mogul Friedberg GmbHInventors: Michael Buchmann, Markus Aumiller
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Patent number: 10344348Abstract: A slide ring includes a main body composed of grey cast iron, wherein at least a partial region of a functional surface has a ledeburitic microstructure at the surface. A method for producing such a slide ring includes heating a functional surface of the slide ring by irradiating with high-energy radiation, wherein the irradiation is carried out so that at least a partial region of the irradiated surface is remelted, wherein the parameters of the irradiation are selected so that at least a partial region of the functional surface has a ledeburitic microstructure after cooling.Type: GrantFiled: July 3, 2014Date of Patent: July 9, 2019Assignee: Federal-Mogul Friedberg GmbHInventors: Christoph Bradl, Marc-Manuel Matz, Andreas Dengler, Andreas Kumpfmuller
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Patent number: 9951868Abstract: A piston ring for an internal combustion engine or for a compressor, in particular a piston ring includes an exterior running surface (3), two flanks (5, 6), and an interior circumferential surface (7); the running surface (3) has a profiled section with a groove (2), the groove (2) being located between an upper portion (3?) of the running surface and a lower portion (3?) of the running surface in relation to the cross-section of the piston ring (1).Type: GrantFiled: March 18, 2015Date of Patent: April 24, 2018Assignee: Federal-Mogul FriedbergInventor: Markus Mahl
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Patent number: 8317942Abstract: A cast iron material, particularly a ledeburitic cast iron material with a carbide content of at least 15 wt. % and a characteristic free, evenly distributed graphite formation is disclosed. In this case, the evenly distributed graphite formation may comprise graphite flakes and/or vermicular graphite and/or nodular graphite. Depending on the respective application (diameter (D) of the running gear seal, peripheral speed), the basic matrix may be realized in pearlitic and/or bainitic and/or martensitic form. Due to the high graphite content, the material has a thermal conductivity that is three to four times greater than that of white cast iron materials, wherein this provides the advantage that no scoring of the running gear seals occurs at high peripheral speeds (>5 m/s) and large diametrical dimensions of the seals (D >600 mm). In addition, the high carbide content of at least 15 wt.Type: GrantFiled: February 8, 2006Date of Patent: November 27, 2012Assignee: Federal-Mogul Friedberg GmbHInventors: Laszlo Pelsoeczy, Wilfried Langner, Hans-Henning Zutz, Thomas Gerle, Franz-J. Goebbeis
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Patent number: 6976681Abstract: A slide ring seal assembly includes a slide ring having an axially extending annular leg. The leg has radially outer and radially inner circumferential surfaces and a free axial end. A plurality of circumferentially spaced recesses are provided in leg at the free axial end thereof. Each recess extends from the radially outer surface to the radially inner surface. An annular sealing body surrounds the leg and is seated thereon. Circumferentially spaced, radially inward-oriented extensions forming part of the annular sealing body and projecting into respective recesses are provided in the leg for effecting a form-locking connection between the slide ring and the annular sealing body.Type: GrantFiled: January 23, 2002Date of Patent: December 20, 2005Assignee: Federal-Mogul Friedberg GmbHInventor: Hans-Henning Zutx
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Patent number: 6921078Abstract: Slit ring seal, especially running gear seal, consisting of an angle-shaped slip and/or opposing ring with a circumferential surface designed to accent a ring-shaped, approximately cross-sectional plate-spring shaped sealing body, where the sealing body, as needed, includes a secondary seal directed toward the area of the sealing shaft of the slip, and/or opposing ring, and supports itself with segment areas of its outer circumferential surface on corresponding surface areas of an installation bore, where a ring-shaped securing element is provided radially between the outer circumferential surface of the slip and/or opposing ring and the installation bore, contacting the sealing body in the installed condition.Type: GrantFiled: August 18, 2003Date of Patent: July 26, 2005Assignee: Federal-Mogul Friedberg, GmbHInventor: Hans-Henning Zutz
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Patent number: 6726216Abstract: A piston ring for use in a cylinder of an internal combustion engine, which ring is nitride-hardened at least on the sliding surface between piston ring and cylinder wall. The nitride layer is composed of a precipitated layer and a compound layer, wherein the piston ring consists of a low-alloyed iron-base material and an oxide layer is deposited on the compound layer.Type: GrantFiled: June 3, 2002Date of Patent: April 27, 2004Assignee: Federal-Mogul Friedberg GmbHInventors: Ehrenfried Horn, Rudolf Widmann, Steffen Hoppe
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Patent number: 6479165Abstract: There is disclosed a material wire for wear-resistant and trobologically favorable shaped bodies manufactured by the arc spraying method, which comprises a covering (12) and a filling (14). The covering (12) comprises an alloy based on aluminium with at least one further alloy component, for example magnesium or manganese. The filling (14) comprises further alloy components for the resulting alloy of the shaped body, for example silicon. The filling (14) may apart from the silicon also comprise further components, for example aluminium and/or boron. By way of this the composition and the material properties of the resulting alloy of the shaped body may be set.Type: GrantFiled: April 10, 2001Date of Patent: November 12, 2002Assignees: Federal-Mogul Friedberg GmbH, Drahtwarenfabrik Drahtzug Stein GmbH & Co. KGInventors: Manfred Fischer, Peter Godel, Werner Trubenbach, Markus Müller, Reinhard Rosert
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Patent number: 6354259Abstract: A method for the manufacture of a cylinder liner for combustion engines and a cylinder liner which can be manufactured by the method according to the invention are disclosed. The method comprises a thermal spray-deposition, such as by an arc spray-deposition process, of a wearing layer on a supporting body and a spray-deposition of a protective or connecting layer on the wearing layer. The wearing layer comprises a hypereutectic aluminum-silicon alloy and the protective or connecting layer comprises a hypoeutectic aluminum-silicon alloy. A melt retarder of iron, for example, may be interposed between these two layers. The melt retarder comprises a higher melting temperature than the two aluminum-silicon alloys, thereby preventing the wearing layer from partially melting when the cylinder liner is cast into a cylinder bore.Type: GrantFiled: April 10, 2001Date of Patent: March 12, 2002Assignee: Federal-Mogul Friedberg GmbHInventors: Manfŕed Fischer, Rudólf Mundl, Peter Gödel, Wolfgang Reichle, Werner Trübenbach, Markus Müller, Reinhard Rosert