Patents by Inventor Peter Wiesner
Peter Wiesner 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: 20150343576Abstract: The invention relates to a method for assembling a camshaft (2) from a support shaft (5) and components (17) to be connected to the support shaft (5), the components (17) having through-openings (19) for receiving the support shaft (5). In this method, a support shaft (5) is provided, having first diametrical enlargements (11) in first regions (9), in which the components (17) are to be secured, and second diametrical enlargements (15) in second regions (13), in which the components (17) are to be pre-positioned, the diameter (D2) in the second regions (13) being smaller than the diameter (D1) in the first regions (9). In a further step, the support shaft (5) is cooled and/or the components (17) are heated up, so that the support shaft (5) can be pushed with its first and second diametrical enlargements (11, 13) through the through-openings (19) of the components (17). After that, the support shaft (5) is pushed through the through-openings (19), so that each component (17) is assigned to a second region.Type: ApplicationFiled: December 18, 2013Publication date: December 3, 2015Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventors: Andreas STAPPELMANN, Peter WIESNER, Falk MUHSFELDT
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Publication number: 20150251238Abstract: Disclosed herein is a method for assembling a module for a motor vehicle engine, which module comprises at least one supporting structure with bearing seats and at least one camshaft which is mounted rotatably in the bearing seats, the camshaft being constructed during the assembly of the module from a support shaft which is configured at least in sections as a hollow shaft and components which are to be connected to the support shaft at predefined joining positions. The method includes providing a supporting structure having bearing seats, positioning components to be affixed to a support shaft in a preliminary position with respect to the bearing seats, pushing the support shaft through the bearing seats and through-openings of the components, enlarging portions of the outer diameter of the support shaft at defined joining positions thereof, and axially moving the components on the support shaft onto the joining positions.Type: ApplicationFiled: October 25, 2013Publication date: September 10, 2015Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventor: Peter Wiesner
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Patent number: 9073135Abstract: A method for slicing wafers from a workpiece includes providing wire guide rolls that each have a grooved coating with a specific thickness, providing a fixed bearing respectively associated with each wire guide roll and providing a sawing wire including wire sections disposed in a parallel fashion. The wire sections are tensioned between the wire guide rolls and are moved relative to the workpiece so as to perform a sawing operation. The wire guide rolls cooled and the fixed bearings are cooled independently of the wire guide rolls.Type: GrantFiled: March 19, 2012Date of Patent: July 7, 2015Assignee: SILTRONIC AGInventors: Anton Huber, Wolfgang Gmach, Robert Kreuzeder, Peter Wiesner
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Publication number: 20150158203Abstract: A method for sawing a multiplicity of wafers from a workpiece by means of a wire web of a wire saw includes providing a wire web consisting of a plurality of parallel wire sections. The wire web is spanned by at least two wire guide rollers where each wire guide rollers comprises a core having two side surfaces and a lateral surface. The core is composed of a first material. Each core is rotatably mounted along its longitudinal axis and comprises at least two separate cavities. The lateral surface of each core is enclosed by a jacket composed of a second material. Parallel groves are cut into the jacket for guiding the wire sections of the web. The length of the jacket is altered thermally by means of at least one cavity being filled with a temperature regulating medium.Type: ApplicationFiled: December 2, 2014Publication date: June 11, 2015Inventors: Peter Wiesner, Robert Kreuzeder
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Patent number: 8968054Abstract: A method for cooling a cylindrical workpiece during wire sawing includes applying a liquid coolant to a surface of the workpiece. The workpiece is made of semiconductor material having a surface including two end faces and a lateral face. The method includes sawing the workpiece with a wire saw including a wire web having wire sections arranged in parallel by penetrating the wire sections into the workpiece by an oppositely directed relative movement of the wire sections and the workpiece. Wipers are disposed so as to bear on the surface of the workpiece. The temperature of the workpiece is controlled during the wire sawing using a liquid coolant applied onto the workpiece above the wipers so as to remove the liquid coolant with the wipers bearing on the workpiece surface.Type: GrantFiled: December 30, 2011Date of Patent: March 3, 2015Assignee: Siltronic AGInventors: Peter Wiesner, Anton Huber
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Patent number: 8887681Abstract: A cam unit for arranging on a camshaft main part of a camshaft in a rotationally fixed and axially movable manner. The cam unit includes a tubular sleeve main part and at least one cam element that lies on the sleeve main part in a rotationally fixed and non-movable manner. The sleeve main part and the at least one cam element are designed as individual parts that can be separately produced and subsequently assembled.Type: GrantFiled: November 11, 2010Date of Patent: November 18, 2014Assignee: ThyssenKrupp Presta TecCenter AGInventors: Peter Wiesner, Manfred Muster, Thomas Binder, Jonathan Heywood
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Publication number: 20140165776Abstract: A camshaft includes a carrier shaft to be mounted rotatably along a shaft axis and at least one cam pack or package axially displaceably disposed on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The cams and the at least one adjusting member are connected to one another in an axially adjacent configuration and can be mounted axially displaceably as a composite structure in a direct configuration on the carrier shaft by a rolling element guide with rolling elements. A cam pack or package and a method for producing a camshaft are also provided.Type: ApplicationFiled: June 29, 2012Publication date: June 19, 2014Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventors: Thomas Binder, Peter Wiesner
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Patent number: 8746227Abstract: A method for slicing wafers from a workpiece includes providing wire guide rolls each having a grooved coating with a specific thickness and providing rings at opposing ends of a first of the coatings of a respective wire guide roll. The rings are fixed exclusively to the first coating. A sawing wire including wire sections disposed in a parallel fashion is tensioned between the wire guide rolls. The wire sections of the sawing wire are moved relative to the workpiece so as to perform a sawing operation. A change in length of the first coating, brought about by a temperature change, is measured by measuring distances between sensors and the rings. The wire guide rolls are cooled in a manner dependent on the measured distances.Type: GrantFiled: March 9, 2012Date of Patent: June 10, 2014Assignee: Siltronic AGInventors: Anton Huber, Wolfgang Gmach, Robert Kreuzeder, Peter Wiesner
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Publication number: 20140144401Abstract: A camshaft includes a carrier shaft which can be mounted rotatably along a shaft axis and at least one cam pack disposed axially displaceably on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The cams and the at least one adjusting member are connected to one another in an axially adjacent configuration and can be mounted axially displaceably as a composite structure in a direct configuration on the carrier shaft. A method for producing a camshaft and a cam pack are also provided.Type: ApplicationFiled: June 29, 2012Publication date: May 29, 2014Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventors: Thomas Binder, Peter Wiesner
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Publication number: 20140144282Abstract: A camshaft includes a carrier shaft which can be mounted rotatably along a shaft axis and at least one cam pack or package axially displaceably disposed on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The cams and the at least one adjusting member are cast integrally with a carrier body in an axially adjacent configuration and are connected to one another by the carrier body. The cams and/or the adjusting member include an inner toothing which engages in an axially displaceable manner with an outer toothing of the carrier shaft. A cam pack and a method for producing a camshaft are also provided.Type: ApplicationFiled: June 29, 2012Publication date: May 29, 2014Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventors: Thomas Binder, Peter Wiesner
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Publication number: 20140144420Abstract: A method resumes an interrupted process for sawing a workpiece into wafers using a wire saw that includes advancing a wire web into existing sawing kerfs of the workpiece with a forward movement of the sawing wire with a first speed in the presence of a liquid sawing medium until the wire web or workpiece has reached a position corresponding to the interruption of the wire sawing process. The sawing wire is moved in defined time intervals by a forward movement of a particular length with a second speed and a backward movement of another length with a third speed, where the backward length is less than the forward length and the forward and backward movement correspond to a cycle. The wire length that is unwound during the forward movements is increased until the length during the forward movement corresponds to the length of the forward movement before the interruption.Type: ApplicationFiled: November 22, 2013Publication date: May 29, 2014Applicant: Siltronic AGInventor: Peter Wiesner
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Publication number: 20140137826Abstract: A camshaft includes a carrier shaft to be mounted rotatably in a shaft axis and at least one cam pack axially displaceable on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The cams and adjusting member are interconnected in an axially adjacent configuration by an integrally molded body. The body is integrally molded on at least one cam and the adjusting member by an original molding process and a composite structure is formed by the integrally molded body. The composite structure can be mounted in a direct configuration on the carrier shaft to be axially displaceable thereon. The cams and the adjusting member include inner toothing engaging in an axially displaceable manner with outer toothing of the carrier shaft. A cam pack and a method for producing a camshaft are also provided.Type: ApplicationFiled: June 29, 2012Publication date: May 22, 2014Applicant: THYSSENKRUPP PRESTA TECCENTER AGInventors: Thomas Binder, Peter Wiesner
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Patent number: 8495980Abstract: A camshaft arrangement for a motor vehicle engine has a hollow outer shaft and an inner shaft supporting inner shaft cams. The inner shaft cams are non-rotatably attached to the inner shaft by at least one connection element that protrudes with clearance through an aperture in the outer shaft and is attached to the respective inner shaft cam which is rotatably mounted on the outer shaft. When inserted into a receiver in the inner shaft, a portion of the connection element protrudes out of the receiver, and the protruding portion is at least partially inserted into an aperture located at the joint diameter of the inner shaft cam. This aperture is open at least towards an end face of the inner shaft cam. The protruding portion has at least two opposite-lying side surfaces lying with an interference fit against corresponding inner surfaces of the aperture of the inner shaft cam.Type: GrantFiled: May 4, 2009Date of Patent: July 30, 2013Assignee: ThyssenKrupp Presta TecCenter AGInventors: Guido Scherzinger, Bernd Mann, Gunther Martin Lugauer, Mario Wolfinger, Frank Altag, Peter Wiesner, Juergen Meusel, Manfred Muster, Alex Meier
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Publication number: 20130000442Abstract: A cam unit for arranging on a camshaft main part of a camshaft in a rotationally fixed and axially movable manner. The cam unit includes a tubular sleeve main part and at least one cam element that lies on the sleeve main part in a rotationally fixed and non-movable manner. The sleeve main part and the at least one cam element are designed as individual parts that can be separately produced and subsequently assembled.Type: ApplicationFiled: November 11, 2010Publication date: January 3, 2013Inventors: Peter Wiesner, Manfred Muster, Thomas Binder, Jonathan Heywood
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Publication number: 20120240915Abstract: A method for slicing wafers from a workpiece includes providing wire guide rolls that each have a grooved coating with a specific thickness, providing a fixed bearing respectively associated with each wire guide roll and providing a sawing wire including wire sections disposed in a parallel fashion. The wire sections are tensioned between the wire guide rolls and are moved relative to the workpiece so as to perform a sawing operation. The wire guide rolls cooled and the fixed bearings are cooled independently of the wire guide rolls.Type: ApplicationFiled: March 19, 2012Publication date: September 27, 2012Applicant: SILTRONIC AGInventors: Anton Huber, Wolfgang Gmach, Robert Kreuzeder, Peter Wiesner
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Publication number: 20120240914Abstract: A method for slicing wafers from a workpiece includes providing wire guide rolls each having a grooved coating with a specific thickness and providing rings at opposing ends of a first of the coatings of a respective wire guide roll. The rings are fixed exclusively to the first coating. A sawing wire including wire sections disposed in a parallel fashion is tensioned between the wire guide rolls. The wire sections of the sawing wire are moved relative to the workpiece so as to perform a sawing operation. A change in length of the first coating, brought about by a temperature change, is measured by measuring distances between sensors and the rings. The wire guide rolls are cooled in a manner dependent on the measured distances.Type: ApplicationFiled: March 9, 2012Publication date: September 27, 2012Applicant: Siltronic AGInventors: Anton Huber, Wolfgang Gmach, Robert Kreuzeder, Peter Wiesner
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Publication number: 20120178346Abstract: A method for cooling a cylindrical workpiece during wire sawing includes applying a liquid coolant to a surface of the workpiece. The workpiece is made of semiconductor material having a surface including two end faces and a lateral face. The method includes sawing the workpiece with a wire saw including a wire web having wire sections arranged in parallel by penetrating the wire sections into the workpiece by an oppositely directed relative movement of the wire sections and the workpiece. Wipers are disposed so as to bear on the surface of the workpiece. The temperature of the workpiece is controlled during the wire sawing using a liquid coolant applied onto the workpiece above the wipers so as to remove the liquid coolant with the wipers bearing on the workpiece surface.Type: ApplicationFiled: December 30, 2011Publication date: July 12, 2012Applicant: SILTRONIC AGInventors: Peter Wiesner, Anton Huber
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Patent number: 7971584Abstract: A sawing strip for fixing a substantially cylindrical workpiece when cutting off slices from this workpiece with a wire saw has a first face, which is concavely curved perpendicular to its longitudinal direction for connecting to the workpiece, a second face opposite the first face for connecting to a mounting plate, and two side faces which connect the first face and the second face, two edges of the sawing strip at which the side faces meet the first face at a distance a from each other, an imaginary line on the first face marking its minimum distance d from the second face, the side faces being at a distance b, measured at the height of the line and perpendicular to the distance d, wherein the distance b is less than the distance a. The sawing strip is useful for decreasing waviness of wafers cut from a cylindrical workpiece using the sawing strip.Type: GrantFiled: July 6, 2007Date of Patent: July 5, 2011Assignee: Siltronic AGInventor: Peter Wiesner
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Publication number: 20110120401Abstract: A camshaft arrangement for a motor vehicle engine has a hollow outer shaft and an inner shaft supporting inner shaft cams. The inner shaft cams are non-rotatably attached to the inner shaft by at least one connection element that protrudes with clearance through an aperture in the outer shaft and is attached to the respective inner shaft cam which is rotatably mounted on the outer shaft. When inserted into a receiver in the inner shaft, a portion of the connection element protrudes out of the receiver, and the protruding portion is at least partially inserted into an aperture located at the joint diameter of the inner shaft cam. This aperture is open at least towards an end face of the inner shaft cam. The protruding portion has at least two opposite-lying side surfaces lying with an interference fit against corresponding inner surfaces of the aperture of the inner shaft cam.Type: ApplicationFiled: May 4, 2009Publication date: May 26, 2011Applicant: Thyssenkrupp Presta TecCenter AGInventors: Guido Scherzinger, Bernd Mann, Gunther Martin Lugauer, Mario Wolfinger, Frank Altag, Peter Wiesner, Juergen Meusel, Manfred Muster, Alex Meier
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Publication number: 20080264228Abstract: A wire guide roll for use in wire saws for simultaneously slicing a multiplicity of wafers from a cylindrical workpiece is provided with a coating having a thickness of at least 2 mm and at most 7.5 mm of a material which has a Shore A hardness of at least 60 and at most 99, and which contains a multiplicity of grooves through which the sawing wire is guided, the grooves each having a curved groove base with a radius of curvature which is 0.25-1.6 times the sawing wire diameter, and an aperture angle of 60-130°. A multiplicity of wafers are simultaneously sliced from a cylindrical workpiece by means of a wire saw using such wire guide rolls.Type: ApplicationFiled: April 21, 2008Publication date: October 30, 2008Applicant: SILTRONIC AGInventors: Anton Huber, Engelbert Auer, Manfred Schoenhofer, Helmut Seehofer, Peter Wiesner