Patents by Inventor Frieder Stetter
Frieder Stetter 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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Publication number: 20230146415Abstract: The invention relates to a compressor (20) for generating a compressed air flow for a fuel cell (10), having a compressor element (21), in particular a compressor wheel, wherein the compressor element (21) is coupled in a to a drive shaft (23) for co-rotation, the drive shaft (23) being driven by a motor (22), in particular an electric motor, wherein at least one hydrodynamic or hydrostatic bearing (24, 25) is used to mount the shaft (23) in a rotatable manner, wherein the plain bearing (24, 25) is connected to a lubricant supply means (30), which is used to supply a lubricant for hydrodynamic or hydrostatic pressure generation to the plain bearing (24, 25), wherein the lubricant is water or a fluid mixture, predominantly comprising water, wherein the plain bearing (24, 25) has a lubricant inlet and a lubricant outlet, wherein the lubricant can be routed to the plain bearing (24, 25) via the lubricant inlet and the lubricant can be discharged from the plain bearing (24, 25) via the lubricant outlet, and whereType: ApplicationFiled: February 4, 2021Publication date: May 11, 2023Inventors: Steffen Schmitt, Frieder Stetter, Oliver Kuhne, Rüdiger Kleinschmidt, Gunter Winkler
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Patent number: 11629614Abstract: An exhaust gas turbocharger having a hydrodynamic plain bearing or a hydrodynamic plain bearing, comprising a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface (17.1, 17.2, 17.3) of the rotor (10) and a counter-surface of the counter-bearing part (50) face each other to form a hydrodynamic plain bearing, wherein the rotor bearing surface and/or the counterface, when cut along and through the axis of rotation (R) in sectional view, form(s) a continuous bearing contour forming at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to provide hydrodynamic load capacities in both radial and axial directions, and wherein the counter-bearing part (50) is mounted in a bearing housing (60) or housing part.Type: GrantFiled: November 22, 2019Date of Patent: April 18, 2023Inventors: Martin Berger, Rüdiger Kleinschmidt, Frieder Stetter, Oliver Kuhne, Steffen Schmitt
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Patent number: 11549397Abstract: The invention relates to an exhaust gas turbocharger having a fluid dynamic bearing having a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface of the rotor (10) and a counterface of the counter-bearing part (50) face each other, to form a fluid dynamic bearing, wherein the rotor bearing surface and/or the counterface form(s) a continuous bearing contour when cut longitudinally and through the axis of rotation (R) in sectional view, which bearing contour(s) are formed of at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to generate fluid dynamic load capacities in both the radial and the axial directions, wherein the bearing surface of the rotor (10) is formed by a rotor part (40), which is connected to a rotor shaft (11) and is secured on the rotor shaft (11), and wherein the rotor part (40) is supported relative to the rotor shaft (11) in the area of a support section (14) of the rotor shaft (11).Type: GrantFiled: November 22, 2019Date of Patent: January 10, 2023Inventors: Martin Berger, Rüdiger Kleinschmidt, Frieder Stetter, Oliver Kuhne, Steffen Schmitt
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Publication number: 20220120193Abstract: The invention relates to an exhaust gas turbocharger having a hydrodynamic plain bearing or a hydrodynamic plain bearing, comprising a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface of the rotor (10) and a counterface of the counter-bearing part (50) face each other to form the hydrodynamic plain bearing in the form of a combined journal—thrust bearing, having a continuous hydrodynamically load bearing gap formed between the rotor bearing surface and the counterface, wherein the rotor bearing surface and/or the counterface, when cut longitudinally and through the axis of rotation (R) in sectional view, form(s) a bearing contour forming merging contour sections (17.1 to 17.3; 44.1 to 44.3; 53.1 to 53.3) to generate hydrodynamic load capacities in both the radial and the axial direction, wherein a contour section (17.3; 44.3; 53.Type: ApplicationFiled: November 22, 2019Publication date: April 21, 2022Inventors: Martin Berger, Rüdiger Kleinschmidt, Frieder Stetter, Oliver Kuhne, Steffen Schmitt
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Publication number: 20220065132Abstract: The invention relates to an exhaust gas turbocharger having a fluid dynamic bearing having a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface of the rotor (10) and a counterface of the counter-bearing part (50) face each other, to form a fluid dynamic bearing, wherein the rotor bearing surface and/or the counterface form(s) a continuous bearing contour when cut longitudinally and through the axis of rotation (R) in sectional view, which bearing contour(s) are formed of at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to generate fluid dynamic load capacities in both the radial and the axial directions, wherein the bearing surface of the rotor (10) is formed by a rotor part (40), which is connected to a rotor shaft (11) and is secured on the rotor shaft (11), and wherein the rotor part (40) is supported relative to the rotor shaft (11) in the area of a support section (14) of the rotor shaft (11).Type: ApplicationFiled: November 22, 2019Publication date: March 3, 2022Inventors: Martin Berger, Rüdiger Kleinschmidt, Frieder Stetter, Oliver Kuhne, Steffen Schmitt
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Publication number: 20210310372Abstract: An exhaust gas turbocharger having a hydrodynamic plain bearing or a hydrodynamic plain bearing, comprising a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface (17.1, 17.2, 17.3) of the rotor (10) and a counter-surface of the counter-bearing part (50) face each other to form a hydrodynamic plain bearing, wherein the rotor bearing surface and/or the counterface, when cut along and through the axis of rotation (R) in sectional view, form(s) a continuous bearing contour forming at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to provide hydrodynamic load capacities in both radial and axial directions, and wherein the counter-bearing part (50) is mounted in a bearing housing (60) or housing part.Type: ApplicationFiled: November 22, 2019Publication date: October 7, 2021Inventors: Martin Berger, Rüdiger Kleinschmidt, Frieder Stetter, Oliver Kuhne, Steffen Schmitt
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Patent number: 10816036Abstract: A bearing bushing for a charging device may include an inner jacket surface including at least two radial depressions. A respective lowest point of the at least two radial depressions may be disposed on a circle having a radius R1. A plurality of plateau surfaces may be disposed circumferentially between the at least two radial depressions and may be offset radially towards an inside of the bearing bushing. The plateau surfaces may be curved and may have a constant radius R2. A ratio between the radius R1 and the radius R2 may correspond to the relationship: R1/R2=1.001 to 1.015.Type: GrantFiled: December 4, 2017Date of Patent: October 27, 2020Assignee: BMTS Technology GmbH & Co. KGInventors: Ruediger Kleinschmidt, Oliver Kuhne, Steffen Schmitt, Frieder Stetter
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Patent number: 10508564Abstract: A bearing housing for an exhaust gas turbocharger may include a bearing housing cover arranged on a bearing housing wall. The bearing housing cover may include a penetrating rotation-symmetrical sealing recess with a centre axis and may have a locating surface facing the bearing housing wall and radially extending from the centre axis. The bearing housing may include a sealing bush arranged in at least one region of the sealing recess. The sealing bush may have a stop surface arranged opposite the locating surface and may include a penetrating shaft recess disposed rotation-symmetrical relative to the centre axis. The bearing housing cover may further include an at least partly circulating groove disposed on the locating surface radially spaced from the centre axis. The groove may include a drainage region arranged below the centre axis and extending from the centre axis radially to an outside.Type: GrantFiled: February 19, 2018Date of Patent: December 17, 2019Assignee: BMTS TECHNOLOGY GMBH & CO.Inventors: Fabian Haslinger, Simon Henzler, Ruediger Kleinschmidt, Oliver Kuhne, Steffen Schmitt, Frieder Stetter
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Patent number: 10393169Abstract: A hydrodynamic plain bearing having a stator and a rotor rotatable with respect to the stator, a rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure. The rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from at least two contour segments. The contour segments are suitable for generating hydrodynamic load capacity in a radial and axial direction. The contour segments are led into one another, by at least one transition segment, in such a way that hydrodynamic load capacity is generatable via the contour segments and the transition segment. The plain bearing is embodied as a multiple-surface plain bearing having two or more lubrication wedges in the region of the contour segments and of the transition segment.Type: GrantFiled: August 16, 2017Date of Patent: August 27, 2019Assignee: BMTS Technology GmbH & Co. KGInventors: Ruediger Kleinschmidt, Frieder Stetter, Steffen Schmitt, Oliver Kuhne, Martin Berger
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Publication number: 20180238191Abstract: A bearing housing for an exhaust gas turbocharger may include a bearing housing cover arranged on a bearing housing wall. The bearing housing cover may include a penetrating rotation-symmetrical sealing recess with a centre axis and may have a locating surface facing the bearing housing wall and radially extending from the centre axis. The bearing housing may include a sealing bush arranged in at least one region of the sealing recess. The sealing bush may have a stop surface arranged opposite the locating surface and may include a penetrating shaft recess disposed rotation-symmetrical relative to the centre axis. The bearing housing cover may further include an at least partly circulating groove disposed on the locating surface radially spaced from the centre axis. The groove may include a drainage region arranged below the centre axis and extending from the centre axis radially to an outside.Type: ApplicationFiled: February 19, 2018Publication date: August 23, 2018Inventors: Fabian Haslinger, Simon Henzler, Ruediger Kleinschmidt, Oliver Kuhne, Steffen Schmitt, Frieder Stetter
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Publication number: 20180156273Abstract: A bearing bushing for a charging device may include an inner jacket surface including at least two radial depressions. A respective lowest point of the at least two radial depressions may be disposed on a circle having a radius R1. A plurality of plateau surfaces may be disposed circumferentially between the at least two radial depressions and may be offset radially towards an inside of the bearing bushing. The plateau surfaces may be curved and may have a constant radius R2. A ratio between the radius R1 and the radius R2 may correspond to the relationship: R1/R2=1.001 to 1.015.Type: ApplicationFiled: December 4, 2017Publication date: June 7, 2018Inventors: Ruediger Kleinschmidt, Oliver Kuhne, Steffen Schmitt, Frieder Stetter
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Publication number: 20180073553Abstract: The invention relates to a hydrodynamic plain bearing having a stator and a rotor rotatable with respect to the stator, a rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure.Type: ApplicationFiled: August 16, 2017Publication date: March 15, 2018Inventors: Ruediger Kleinschmidt, Frieder Stetter, Steffen Schmitt, Oliver Kuhne, Martin Berger
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Publication number: 20180051744Abstract: A bearing device of an exhaust gas turbocharger may include a bearing bush for mounting a shaft in a bearing housing. A pin may engage radially from a hub of the bearing housing into the bearing bush to provide a position securing device of the bearing bush at least against rotational movement. The pin and the bearing bush may be mounted on one another via at least one curved bearing surface, for example a spherical bearing surface and/or a convex bearing surface.Type: ApplicationFiled: August 15, 2017Publication date: February 22, 2018Inventors: Volkhard Ammon, Ruediger Kleinschmidt, Michal Klusacek, Oliver Kuhne, Steffen Schmitt, Frieder Stetter