Patents by Inventor Bernd Barthel
Bernd Barthel 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: 11965554Abstract: A wheel bearing unit includes an outer ring, a first inner ring with a first axial end face, first rolling elements arranged between the outer ring and the first inner ring, a second inner ring with a second axial end face, facing the first axial end face, second rolling elements arranged between the outer ring and the second inner ring, and a sealing device for sealing an interface of the first inner ring and the second inner ring. The sealing device includes an annular retaining element and a sealing element provided on the annular retaining element. The sealing element is a sealing ring that includes first and second contact points contacting the annular retaining element, a third contact point contacting the first inner ring, and a fourth contact point contacting the second inner ring. At least one of the contact points has a flat face.Type: GrantFiled: September 2, 2020Date of Patent: April 23, 2024Assignee: Schaeffler Technologies AG & Co. KGInventors: Lukas Schraut, Bernd Barthel, Branko Katana
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Publication number: 20240093731Abstract: A wheel bearing unit includes an outer ring, a first inner ring with a first axial end face, first rolling elements arranged between the outer ring and the first inner ring, a second inner ring with a second axial end face, facing the first axial end face, second rolling elements arranged between the outer ring and the second inner ring, and a sealing device for sealing an interface of the first inner ring and the second inner ring. The sealing device includes an annular retaining element and a sealing element provided on the annular retaining element. The sealing element is a sealing ring that includes first and second contact points contacting the annular retaining element, a third contact point contacting the first inner ring, and a fourth contact point contacting the second inner ring. At least one of the contact points has a flat face.Type: ApplicationFiled: September 2, 2020Publication date: March 21, 2024Applicant: Schaeffler Technologies AG & Co. KGInventors: Lukas Schraut, Bernd Barthel, Branko Katana
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Publication number: 20230145912Abstract: The present invention relates to a wire electrode for spark-erosion cutting having a core (2), which contains a metal or a metal alloy, and a covering layer (3), surrounding the core (2), which comprises regions the morphology of which corresponds to block-like particles, which are spatially separated, at least over a portion of their circumference, from each other and/or the core material by cracks, characterized in that, viewed in a wire cross section perpendicular or parallel to the wire longitudinal axis, the portion amounting to more than 50% of the surface area of a region with the morphology of a block-like particle contains a copper-zinc alloy with a zinc concentration of 58.5-67 wt.Type: ApplicationFiled: March 30, 2021Publication date: May 11, 2023Inventors: Bernd BARTHEL, Stefan FLÜGGE, Tobias NÖTHE, Ivo Zunke
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Publication number: 20220212277Abstract: The invention relates to a wire electrode for spark-erosion cutting, comprising a core (2), which has a metal or a metal alloy, and a sheath (3, 4, 6), which surrounds the core (2) and comprises one or more sheath layers (3, 4, 6), one of which comprises regions (3) having a morphology corresponding to block-like particles, which are spatially separated, at least over part of their periphery, from one another, from the material of the layer comprising said regions, from the material of one or more other layers and/or from the core material by cracks, characterized in that, in a wire cross-section, viewed perpendicularly or parallel to the wire longitudinal axis, more than 50% of the surface area of a region having the morphology of a block-like particle has a copper-zinc alloy with a zinc concentration of 38 to 49 wt. %. There is optionally a thin cover layer on the block-like particles, which cover layer consists of more than 50 wt. % zinc oxide with a thickness of 0.05 to 2 ?m.Type: ApplicationFiled: May 8, 2020Publication date: July 7, 2022Applicant: Berkenhoff GmbHInventors: Tobias NÖTHE, Bernd BARTHEL, Stefan RINK
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Patent number: 10968952Abstract: A multi-row rolling bearing unit including an outer ring and at least two inner rings, between which rolling bodies are guided, and an elastic securing ring which engages in annular grooves of the inner rings, the securing ring having a U-shaped cross-sectional profile with two flanks which engage in the annular grooves.Type: GrantFiled: March 28, 2018Date of Patent: April 6, 2021Assignee: Schaeffler Technologies AG & Co. KGInventors: Bernd Barthel, Lukas Schraut
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Publication number: 20200096040Abstract: A multi-row rolling bearing unit including an outer ring and at least two inner rings, between which rolling bodies are guided, and an elastic securing ring which engages in annular grooves of the inner rings, the securing ring having a U-shaped cross-sectional profile with two flanks which engage in the annular grooves.Type: ApplicationFiled: March 28, 2018Publication date: March 26, 2020Applicant: Schaeffler Technologies AG & Co. KGInventors: Bernd Barthel, Lukas Schraut
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Publication number: 20050029232Abstract: The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40% zinc or, alternatively, a steel core and a zinc alloy outer layer having a zinc content of from 40-60%. The steel core has a patented structure which contains between 0.6 and 1 wt. % carbon and occupies an area corresponding to between 50 and 75% of the erosion electrode diameter, the intermediate layer occupying an area of between 5 and 40% of the total diameter, the outer layer occupying an area of between 10 and 30%, and the zinc content of the outer layer being between 40 and 60 wt. %. In the alternative embodiment, the steel core occupies an area corresponding to between 50 and 75% of the erosion electrode diameter and the outer layer occupies the balance.Type: ApplicationFiled: September 8, 2004Publication date: February 10, 2005Inventors: Bernd Barthel, Heinrich Groos, Hans Hermanni, Klaus Tauber
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Patent number: 6806433Abstract: The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40% zinc or, alternatively, a steel core and a zinc alloy outer layer having a zinc content of from 40-60%. The steel core has a patented structure which contains between 0.6 and 1 wt. % carbon and occupies an area corresponding to between 50 and 75% of the erosion electrode diameter, the intermediate layer occupying an area of between 5 and 40% of the total diameter, the outer layer occupying an area of between 10 and 30%, and the zinc content of the outer layer being between 40 and 60 wt. %. In the alternative embodiment, the steel core occupies an area corresponding to between 50 and 75% of the erosion electrode diameter and the outer layer occupies the balance.Type: GrantFiled: July 31, 2001Date of Patent: October 19, 2004Assignee: Berkenhoff GmbHInventors: Bernd Barthel, Heinrich Groos, Hans Hermanni, Klaus Tauber
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Patent number: 6794597Abstract: In order to achieve a reduction in wear of the wire guide rollers, apart from an improvement in the cutting speed and an improvement in current conduction, a wire electrode for spark erosion cutting of metals etc., comprising either a homogenous center (1) made of a metal or of a metal alloy, or a composite center, is provided with a sheath coating (2) whose surface is structured, wherein the indentations (3) created by the structure, are filled by a filler (4) made of an easily vapourable metal or of a metal alloy, so as to achieve a surface with little peak-to-valley height, i.e. with little surface roughness.Type: GrantFiled: September 17, 2002Date of Patent: September 21, 2004Assignee: Berkenhoff GmbHInventors: Heinrich Groos, Bernd Barthel, Tobias Noethe, Christoph Dietrich
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Patent number: 6781081Abstract: A wire electrode for spark erosion cutting of metals, electrically-conducting ceramics etc., comprising either a homogenous centre (1) made of a metal or of a metal alloy, or a composite centre made from a steel core with a coating of copper or copper alloy, wherein the wire electrode comprises at least two sheath coatings made of zinc alloys, with said coatings wearing during erosion. In order to increase performance during high-speed cutting, such a wire electrode comprises an inner sheath coating (2) predominantly comprising &bgr;-brass, and an outer sheath coating (3) predominantly comprising &ggr;-brass, wherein the fraction of &bgr;/&bgr;′-phase or &ggr;-phase in the two sheath coatings is at least 60%. The ratio of the coating thickness of &bgr;-brass to &ggr;-brass is between 0.3 and 7. The sum of the thicknesses of both sheath coatings in relation to the external diameter of the electrode is between 0.1 and 0.3.Type: GrantFiled: September 13, 2002Date of Patent: August 24, 2004Assignee: Berkenhoff GmbHInventors: Heinrich Groos, Bernd Barthel, Tobias Noethe, Christoph Dietrich
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Patent number: 6566622Abstract: A wire electrode, and a method for making it, for use in spark-erosive cutting having an electrically conducting core essentially absorbing the tensile forces. The wire electrode has furthermore a coating which wears during erosion, which coating consists of two layers. Such a wire electrode is suited for both quick cutting and also for fine cutting of workpieces. The wire electrode has for this purpose an inner layer of the coating, which serves the quick cutting process and consists of an essentially homogenous alloy. Whereas the outer layer of the coating is provided for the fine cutting and has a zinc content of above 80 wt. %, whereby the layer thickness of the outer layer lies at ⅕ of the layer thickness of the remaining coating.Type: GrantFiled: March 23, 2000Date of Patent: May 20, 2003Assignee: Berkenhoff GmbHInventors: Bernd Barthel, Bernd Neuser
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Publication number: 20030057190Abstract: In order to achieve a reduction in wear of the wire guide rollers, apart from an improvement in the cutting speed and an improvement in current conduction, a wire electrode for spark erosion cutting of metals etc., comprising either a homogenous centre (1) made of a metal or of a metal alloy, or a composite centre, is provided with a sheath coating (2) whose surface is structured, wherein the indentations (3) created by the structure, are filled by a filler (4) made of an easily vapourable metal or of a metal alloy, so as to achieve a surface with little peak-to-valley height, i.e. with little surface roughness.Type: ApplicationFiled: September 17, 2002Publication date: March 27, 2003Inventors: Heinrich Groos, Bernd Barthel, Tobias Noethe, Christoph Dietrich
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Publication number: 20030057189Abstract: A wire electrode for spark erosion cutting of metals, electrically-conducting ceramics etc., comprising either a homogenous centre (1) made of a metal or of a metal alloy, or a composite centre made from a steel core with a coating of copper or copper alloy, wherein the wire electrode comprises at least two sheath coatings made of zinc alloys, with said coatings wearing during erosion. In order to increase performance during high-speed cutting, such a wire electrode comprises an inner sheath coating (2) predominantly comprising &bgr;-brass, and an outer sheath coating (3) predominantly comprising &ggr;-brass, wherein the fraction of &bgr;/&bgr;′-phase or &ggr;-phase in the two sheath coatings is at least 60%. The ratio of the coating thickness of &bgr;-brass to &ggr;-brass is between 0.3 and 7. The sum of the thicknesses of both sheath coatings in relation to the external diameter of the electrode is between 0.1 and 0.3.Type: ApplicationFiled: September 13, 2002Publication date: March 27, 2003Inventors: Heinrich Groos, Bernd Barthel, Tobias Noethe, Christoph Dietrich
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Patent number: 6447930Abstract: In order to produce a wire electrode having a core consisting of a copper/zinc alloy and to produce a specific sheath layer, the sheath layer is coated onto the core at a temperature at which no diffusion occurs. The wire electrode is subsequently heated at a heating speed higher than 10° C. per second, briefly annealed at temperatures above 500° C. and subsequently cooled again very rapidly at cooling speeds higher than 10° C. per second.Type: GrantFiled: February 11, 1998Date of Patent: September 10, 2002Assignee: Berkenhoff GmbHInventors: Bernd Barthel, Heinrich Groos, Hans Hermanni
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Patent number: 6448527Abstract: The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40 % zinc. The steel core has a patented structure which contains between 0.6 and 1 wt. % carbon and occupies an area corresponding to between 50 and 75 % of the erosion electrode diameter, the intermediate layer occupying an area of between 5 and 40 % of the total diameter, the outer layer occupying an area of between 10 and 30 %, and the zinc content of the outer layer being between 40 and 60 wt. %.Type: GrantFiled: December 9, 1998Date of Patent: September 10, 2002Assignee: Berkenhoff GmbHInventors: Bernd Barthel, Heinrich Groos, Hans Hermanni, Klaus Tauber
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Patent number: 6348667Abstract: A method and a wire electrode for the spark-erosive cutting of hard metal, whereby the wire electrode has a core and at least one outer coat surrounding the core and wearing during cutting. To avoid corrosion, as, for example, pitting, a wire electrode is chosen, the wearing outer coat of which consists of a metal or a metal alloy which is not nobler than the binder contained in the hard metal, and the metal or the metal alloy has an electrode potential which is less than or equal to &phgr;0=−0.28 V, referred to a standard hydrogen electrode.Type: GrantFiled: December 29, 2000Date of Patent: February 19, 2002Assignee: Berkenhoff GmbHInventors: Ingo Baumann, Bernd Barthel
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Publication number: 20010045412Abstract: The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40% zinc or, alternatively, a steel core and a zinc alloy outer layer having a zinc content of from 40-60%. The steel core has a patented structure which contains between 0.6 and 1 wt. % carbon and occupies an area corresponding to between 50 and 75% of the erosion electrode diameter, the intermediate layer occupying an area of between 5 and 40% of the total diameter, the outer layer occupying an area of between 10 and 30%, and the zinc content of the outer layer being between 40 and 60 wt. %. In the alternative embodiment, the steel core occupies an area corresponding to between 50 and 75% of the erosion electrode diameter and the outer layer occupies the balance.Type: ApplicationFiled: July 31, 2001Publication date: November 29, 2001Inventors: Bernd Barthel, Heinrich Groos, Hans Hermanni, Klaus Tauber
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Publication number: 20010042735Abstract: A method and a wire electrode for the spark-erosive cutting of hard metal, whereby the wire electrode has a core and at least one outer coat surrounding the core and wearing during cutting. To avoid corrosion, as, for example, pitting, a wire electrode is chosen, the wearing outer coat of which consists of a metal or a metal alloy which is not nobler than the binder contained in the hard metal, and the metal or the metal alloy has an electrode potential which is less than or equal to &PHgr;0=−0.28 V, referred to a standard hydrogen electrode.Type: ApplicationFiled: December 29, 2000Publication date: November 22, 2001Inventors: Ingo Baumann, Bernd Barthel
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Patent number: D432396Type: GrantFiled: September 23, 1999Date of Patent: October 24, 2000Assignee: Berkenhoff GmbHInventor: Bernd Barthel
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Patent number: RE44789Abstract: In order to produce a wire electrode having a core consisting of a copper/zinc alloy and to produce a specific sheath layer, the sheath layer is coated onto the core at a temperature at which no diffusion occurs. The wire electrode is subsequently heated at a heating speed higher than 10° C. per second, briefly annealed at temperatures above 500° C. and subsequently cooled again very rapidly at cooling speeds higher than 10° C. per second.Type: GrantFiled: July 13, 2012Date of Patent: March 4, 2014Assignee: Berkenhoff GmbHInventors: Bernd Barthel, Heinrich Groos, Hans Hermanni