Patents by Inventor Fritz Niegel
Fritz Niegel 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: 6492039Abstract: A composite multilayer material is described, which exhibits a relatively high specific load carrying capacity and relatively low wear. The composite multilayer material for plain bearings comprises a backing layer, a bearing metallayer (1), a first intermediate layer (2) of nickel, a second intermediate layer (3) of tin and nickel together with an overlay (4) consisting of copper and tin. The overlay (4) comprises a tin matrix (5), into which tin-copper particles (6) are incorporated, which consist of 39 to 55 wt. % copper, the rest being tin. At high temperatures, as occur in the case of plain bearings used in internal combustion engines, the tin migrates into the second intermediate layer (3) therebelow, resulting in concentration of the tin-copper particles (6).Type: GrantFiled: December 26, 2000Date of Patent: December 10, 2002Assignee: Federal-Mogul Weisbaden GmbH & Co. KGInventors: Hans-Ulrich Huhn, Peter Spahn, Dietmar Wiebach, Achim Adam, Fritz Niegel
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Patent number: 6451452Abstract: A lead-free multilayer material for plain bearings and a process for the production of corresponding bearing shells for improved emergency running and mechanical load-carrying capacity characteristics. The multilayer bearing material comprises a lead-free copper alloy having a copper content ranging from 50 to 95 wt. %, and an overlay formed of a lead-free tin and copper having a tin content ranging from 70 to 97 wt. % and a copper content ranging from 3 to 20 wt. %.Type: GrantFiled: November 6, 2001Date of Patent: September 17, 2002Assignee: Federal-Mogul Weisbaden GmbH & Co. KGInventors: Fritz Niegel, Karl-Heinz Gruenthaler, Werner Lucchetti, Hans-Ulrich Huhn
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Publication number: 20020031684Abstract: A lead-free multilayer material for plain bearings and a process for the production of corresponding bearing shells for improved emergency running and mechanical load-carrying capacity characteristics. The multilayer bearing material comprises a lead-free copper alloy having a copper content ranging from 50 to 95 wt. %, and an overlay formed of a lead-free tin and copper having a tin content ranging from 70 to 97 wt. % and a copper content ranging from 3 to 20 wt. %.Type: ApplicationFiled: November 6, 2001Publication date: March 14, 2002Inventors: Fritz Niegel, Karl-Heinz Gruenthaler, Werner Lucchetti, Hans-Ulrich Huhn
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Patent number: 6301784Abstract: A lead-free multilayer material for plain bearings and a process for the production of corresponding bearing shells for improved emergency running and mechanical load-carrying capacity characteristics. The multilayer bearing material comprises a lead-free copper alloy having a copper content ranging from 50 to 95 wt. %, and an overlay formed of a lead-free tin and copper having a tin content ranging from 70 to 97 wt. % and a copper content ranging from 3 to 20 wt. %.Type: GrantFiled: April 27, 2000Date of Patent: October 16, 2001Assignee: Federal-Mogul Wiesbaden GmbH & Co. KGInventors: Fritz Niegel, Karl-Heinz Gruenthaler, Werner Lucchetti, Hans-Ulrich Huhn
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Publication number: 20010016267Abstract: A composite multilayer material is described, which exhibits a relatively high specific load carrying capacity and relatively low wear. The composite multilayer material for plain bearings comprises a backing layer, a bearing metal layer (1), a first intermediate layer (2) of nickel, a second intermediate layer (3) of tin and nickel together with an overlay (4) consisting of copper and tin. The overlay (4) comprises a tin matrix (5), into which tin-copper particles (6) are incorporated, which consist of 39 to 55 wt. % copper, the rest being tin. At high temperatures, as occur in the case of plain bearings used in internal combustion engines, the tin migrates into the second intermediate layer (3) therebelow, resulting in concentration of the tin-copper particles (6).Type: ApplicationFiled: December 26, 2000Publication date: August 23, 2001Inventors: Hans-Ulrich Huhn, Peter Spahn, Dietmar Wiebach, Achim Adam, Fritz Niegel
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Patent number: 6095690Abstract: Plain bearing elements comprise at least one single-layer metallic bearing material (4) having a sliding surface (6) with lubricating oil pockets (10). The depth (T) of the open oil pockets (10) is 0.03 mm to 0.3 mm, and the ratio of the pocket area to the pocket depth is 10 to 40 mm. The plain bearing elements exhibit superior running qualities and properties. The depth of the oil pockets (10) may be adapted to the service viscosity of the lubricating oil. The oil pockets (10) in the same plain bearing element may also have varying depths (T) and be provided only in predetermined regions of the plain bearing element.Type: GrantFiled: July 30, 1998Date of Patent: August 1, 2000Assignee: Glyco-Metall-Werke Glyco B.V. & Co. KGInventors: Fritz Niegel, Peter-Clemens Hoppe-Boeken, Eckhart Schopf
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Patent number: 6015236Abstract: A plain bearing shell (2a', 2b') exhibits a reduction in oil carbon formation on the plain bearing backing and an improvement in plain bearing interference fit during operation through a decrease in the relative movement between bearing backing and receiving bore. The ratio of the effective wall thickness W.sub.eff to the external bearing diameter D is defined by 0.012.ltoreq.W.sub.eff /D.ltoreq.0.02. The ratio of the installation free spread S to the external bearing diameter D is defined by: 0.025.ltoreq.S/D .ltoreq.0.05.Type: GrantFiled: September 10, 1998Date of Patent: January 18, 2000Assignee: Glyco-Metall-Werke Glyco B.V. & Co.KGInventors: Fritz Niegel, Guido Schoneich, Gerhard Arnold, Werner Lucchetti
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Patent number: 5788380Abstract: In order to take account of dimensional variations in crankcases and connecting rods, the lower bearing shell (9) in the unmounted state is formed such that the outer contour is in the shape of an arc having a radius r.sub.a and the inner contour has the shape of a semi-ellipse having semi-axes a.sub.i and b.sub.i. The bearing semi-axis a.sub.i passes through the vertex (19) of the lower bearing shell (9). When the bearing is mounted, the contour of the upper bearing shell (8) remains unchanged while the lower bearing shell (9) is slightly deformed such that its outer contour assumes the shape of a semi-ellipse having semi-axes a.sub.a and b.sub.a. The short semi-axis b.sub.a passes through the vertex (19) of the lower bearing shell (9).Type: GrantFiled: August 29, 1997Date of Patent: August 4, 1998Assignee: Glyco-Metall-Werke Glyco B.V. & Co. KGInventors: Fritz Niegel, Hjalmar Weiland
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Patent number: 4658500Abstract: In a sliding bearing, a metallic layer is coated on a bearing base bush and is provided with grooved or helical or crossing indentations with intermediate elevations. Applied in a uniform manner onto the so-formed metallic layer is a sliding layer of softer material. Under pressure or application of shear forces, the material of the sliding layer provided above the elevations is forced through plastic shaping to flow into the indentations so as to provide a levelled and smooth sliding surface covering the metallic layer.Type: GrantFiled: April 29, 1985Date of Patent: April 21, 1987Assignee: Glyco-Metall-Werke Daelen & Loos GmbHInventors: Ulrich Engel, Fritz Niegel, Jurgen Groschen
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Patent number: 4206268Abstract: A multi-layered plain slide bearing having a metal base layer, and having a slide layer which is carried by the base layer and which comprises a copper-lead-tin binary or ternary alloy that has been applied to the base layer and that has an unusually high cooper content. The slide layer can contain, by weight, from 20% to 70% of copper, at least 15% and at the most 80% of lead, and from 0% to 30% of tin, and can also optionally contain indium, cadmium or other like metals. The slide bearing can further include a run-in layer which covers the slide layer, and which contains copper, tin, indium and/or lead or their oxides, sulfides or phosphides.Type: GrantFiled: October 16, 1978Date of Patent: June 3, 1980Assignee: Glyco-Metall-Werke Daelen & Loos GmbHInventors: Erich Roemer, Fritz Niegel