Patents by Inventor Holger Patzold
Holger Patzold 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: 11198932Abstract: A method for producing a reduced friction sliding surface on a machine element includes applying a coating comprising amorphous carbon to a surface of the machine element and locally heating the coating with a laser. The coating is heated to a temperature below an evaporation temperature of the coating to achieve a local volumetric increase in the coating and a local increase in a layer thickness of the coating. A surface structure of the coating includes a multiplicity of elevations resulting from a local phase transformation of the coating from amorphous carbon into graphite due to the locally heating.Type: GrantFiled: March 23, 2018Date of Patent: December 14, 2021Assignee: Schaeffler Technologies AG & Co. KGInventors: Oliver Witter, Klaus Feldner, Stefan Dupke, Holger Pätzold, Frank Schlerege, Serge Kursawe
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Publication number: 20210292884Abstract: A method for producing a reduced friction sliding surface on a machine element includes applying a coating comprising amorphous carbon to a surface of the machine element and locally heating the coating with a laser. The coating is heated to a temperature below an evaporation temperature of the coating to achieve a local volumetric increase in the coating and a local increase in a layer thickness of the coating. A surface structure of the coating includes a multiplicity of elevations resulting from a local phase transformation of the coating from amorphous carbon into graphite due to the locally heating.Type: ApplicationFiled: March 23, 2018Publication date: September 23, 2021Applicant: Schaeffler Technologies AG & Co. KGInventors: Oliver WITTER, Klaus FELDNER, Stefan DUPKE, Holger PÄTZOLD, Frank SCHLEREGE, Serge KURSAWE
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Patent number: 11072040Abstract: The invention relates to a method for producing a sliding surface on a machine element, in particular a cam follower, wherein the machine element is first provided with a coating on at least part of the surface of the machine element, into which coating a surface structure is then introduced by laser structuring. In order to be able to introduce a surface structure that does not penetrate the coating even in the case of low layer thicknesses (s1) of the coating, the introduction of the surface structure is performed by laser interference structuring.Type: GrantFiled: January 11, 2016Date of Patent: July 27, 2021Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventor: Holger Patzold
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Publication number: 20180185920Abstract: A lever arranged for actuation by a cam for the purpose of actuating gas exchange valves of an internal combustion engine is provided. The lever has a contact pad which is configured at one end of the lever on the underside thereof for at least one gas exchange valve, and a contact face for a supporting element, arranged at an opposite end of the lever on the underside. At least one cam thrust face is arranged on an upper side in a region between the contact pad and the contact face. The lever can be loaded is can be manufactured in one piece as either a 2C-MIM (2-Component Metal Injection Molding) component, combined 2C-MIM component and CIM (Ceramic Injection Molding) component, or as a 2C-sintered part having two metal components or having one metal component and one ceramic component.Type: ApplicationFiled: August 12, 2016Publication date: July 5, 2018Applicant: Schaeffler Technologies AG & Co. KGInventors: Holger Pätzold, Frank Himsel, Hans Mönius
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Publication number: 20180119741Abstract: Cylindrical rolling bodies, methods of producing the rolling bodies, and anti-friction bearings including the rolling bodies are disclosed. A method of producing the rolling bodies may include a) providing a spherical blank having a diameter (D) and a radius; and b) grinding the spherical blank into a cylindrical shape having a predefined diameter (d) and a length (L) that corresponds to the diameter (D) to form a cylindrical rolling body. After grinding, the cylindrical rolling body may have crowned end surfaces each having a radius corresponding to the radius of the spherical blank. Centerless cylindrical plunge grinding or centerless cylindrical throughfeed grinding may be used as the grinding method.Type: ApplicationFiled: April 18, 2016Publication date: May 3, 2018Applicant: Schaeffler Technologies AG & Co. KGInventors: Frank Jochmann, Holger Pätzold
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Publication number: 20170348797Abstract: The invention relates to a method for producing a sliding surface on a machine element, in particular a cam follower, wherein the machine element is first provided with a coating on at least part of the surface of the machine element, into which coating a surface structure is then introduced by laser structuring. In order to be able to introduce a surface structure that does not penetrate the coating even in the case of low layer thicknesses (s1) of the coating, the introduction of the surface structure is performed by laser interference structuring.Type: ApplicationFiled: January 11, 2016Publication date: December 7, 2017Applicant: Schaeffler Technologies AG & Co. KGInventor: Holger Patzold
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Patent number: 9545690Abstract: A method for structuring at least one sliding surface (4) of a machine element (1), wherein the at least one sliding surface (4) is provided by a first structuring method with a first microstructure (5) for holding lubricant. To be able to now realize the best possible sliding properties for the sliding surface, during the course of a second structuring method, recesses are formed in the at least one sliding surface (4), by which a second microstructure (6) is defined with less depth in comparison with the first microstructure.Type: GrantFiled: February 25, 2015Date of Patent: January 17, 2017Assignee: Schaeffler Technologies AG & Co. KGInventor: Holger Patzold
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Publication number: 20150321285Abstract: A method for structuring at least one sliding surface (4) of a machine element (1), wherein the at least one sliding surface (4) is provided by a first structuring method with a first microstructure (5) for holding lubricant. To be able to now realize the best possible sliding properties for the sliding surface, during the course of a second structuring method, recesses are formed in the at least one sliding surface (4), by which a second microstructure (6) is defined with less depth in comparison with the first microstructure.Type: ApplicationFiled: February 25, 2015Publication date: November 12, 2015Applicant: Schaeffler Technologies AG & Co. KGInventor: Holger Patzold
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Patent number: 9046181Abstract: A non-return valve (8) having a sealing seat (2) having an opening (16) and also a resilient, flat closing element (10), which covers the opening (16) in a closed position. In view of simple assembly of the non-return valve (8), the closing element (10) and the sealing seat (12) are connected fixedly to one another and form a prefabricated structural unit (13).Type: GrantFiled: May 23, 2011Date of Patent: June 2, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Holger Patzold, Philipp Bittel, Barbara Pluta
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Patent number: 8555835Abstract: A switchable finger lever for a valve train of an internal combustion engine is provided, with the finger lever having an inner lever which cooperates at a valve-side end region with a gas exchange valve of the internal combustion engine and is connected at a support-side end region turned away from the valve-side end region pivotally to a support. Outer levers (1a, 1b) connected pivotally to the inner lever are arranged on both sides of the inner lever while being urged against the inner lever in a pivoting direction through a spring and being capable of being coupled to the inner lever through a coupling element. The outer levers (1a, 1b) are configured with an identical structure and each outer lever (1a, 1b) is configured symmetrically to the longitudinal lever axis (2).Type: GrantFiled: March 9, 2011Date of Patent: October 15, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Holger Pätzold, Joachim Krause
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Publication number: 20130118622Abstract: A non-return valve (8) having a sealing seat (2) having an opening (16) and also a resilient, flat closing element (10), which covers the opening (16) in a closed position. In view of simple assembly of the non-return valve (8), the closing element (10) and the sealing seat (12) are connected fixedly to one another and form a prefabricated structural unit (13).Type: ApplicationFiled: March 23, 2011Publication date: May 16, 2013Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventors: Holger Patzold, Philipp Bittel, Barbara Pluta
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Publication number: 20110220050Abstract: A switchable finger lever for a valve train of an internal combustion engine is provided, with the finger lever having an inner lever which cooperates at a valve-side end region with a gas exchange valve of the internal combustion engine and is connected at a support-side end region turned away from the valve-side end region pivotally to a support. Outer levers (1a, 1b) connected pivotally to the inner lever are arranged on both sides of the inner lever while being urged against the inner lever in a pivoting direction through a spring and being capable of being coupled to the inner lever through a coupling element. The outer levers (1a, 1b) are configured with an identical structure and each outer lever (1a, 1b) is configured symmetrically to the longitudinal lever axis (2).Type: ApplicationFiled: March 9, 2011Publication date: September 15, 2011Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventors: Holger Patzold, Joachim Krause