Patents by Inventor Jurgen Zeltner
Jurgen Zeltner 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: 8146915Abstract: A method and an apparatus for laterally aligning a sheet in a processing machine, in particular a printing machine, carries out lateral sheet alignment on a cylinder of the printing machine, e.g. a feed cylinder. In order to achieve large correction distances in relation to a possible lateral movement capability of a gripper bar, the latter is prealigned prior to correction in such a way that, in the event of deviation from predetermined desired values, it is prealigned laterally to defined positions. A sheet-fed rotary printing machine having the apparatus, is also provided.Type: GrantFiled: September 25, 2009Date of Patent: April 3, 2012Assignee: Heidelberger Druckmaschinen AGInventors: Holger Edinger, Jürgen Zeltner
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Publication number: 20100072694Abstract: A method and an apparatus for laterally aligning a sheet in a processing machine, in particular a printing machine, carries out lateral sheet alignment on a cylinder of the printing machine, e.g. a feed cylinder. In order to achieve large correction distances in relation to a possible lateral movement capability of a gripper bar, the latter is prealigned prior to correction in such a way that, in the event of deviation from predetermined desired values, it is prealigned laterally to defined positions. A sheet-fed rotary printing machine having the apparatus, is also provided.Type: ApplicationFiled: September 25, 2009Publication date: March 25, 2010Applicant: HEIDELBERGER DRUCKMASCHINEN AGInventors: Holger Edinger, Jürgen Zeltner
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Patent number: 7316394Abstract: In a sheet feeder for a sheet processing machine, such as a sheet-fed rotary printing press, and initial torque spike when the sheet feeder is first switched into the system is reduced with a switch-on torque limiter. The torque limiter is disposed in the drive train between the sheet processing machine and the sheet feeder, so that a torque surge which occurs when the sheet feeder is coupled in at an increased basic speed of the sheet processing machine can be absorbed.Type: GrantFiled: January 26, 2004Date of Patent: January 8, 2008Assignee: Heidelberger Druckmaschinen AGInventors: Jürgen Zeltner, Darko Zimbakov
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Publication number: 20040251615Abstract: In a sheet feeder for a sheet processing machine, such as a sheet-fed rotary printing press, and initial torque spike when the sheet feeder is first switched into the system is reduced with a switch-on torque limiter. The torque limiter is disposed in the drive train between the sheet processing machine and the sheet feeder, so that a torque surge which occurs when the sheet feeder is coupled in at an increased basic speed of the sheet processing machine can be absorbed.Type: ApplicationFiled: January 26, 2004Publication date: December 16, 2004Inventors: Jurgen Zeltner, Darko Zimbakov
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Patent number: 6695305Abstract: A method of controlling or regulating the vertical position of piled or stacked sheets, which includes determining at the leading edge and at the trailing edge, respectively, of the sheet resting on the top of the sheet pile, the vertical position of the sheet: and, depending upon the vertical position of the leading edge and the trailing edge, respectively, moving in the vertical direction at least one lifting element associated with the sheet trailing edge. The method further comprises, displacing the sheet pile and the lifting element, respectively, a given distance in the vertical direction, when a large discrepancy is found between the vertical position at the leading edge and a nominal value.Type: GrantFiled: December 26, 2000Date of Patent: February 24, 2004Assignee: Heidelberger Druckmaschinen AGInventors: Tobias Müller, Thomas Wolf, Jürgen Zeltner
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Patent number: 6675713Abstract: A drive device for producing an at least approximately sinusoidal speed pattern for a transport belt provided in a printing machine for transporting printing material selected from the group thereof consisting of sheets and signatures, includes non-round drive wheels rotatable about respective axes thereof, and a tensioning member by which the drive wheels are drivingly connected.Type: GrantFiled: March 8, 2002Date of Patent: January 13, 2004Assignee: Heidelberger Druckmaschinen AGInventor: Jürgen Zeltner
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Patent number: 6533269Abstract: A method and device for aligning stacked or piled sheets in a feeder of a sheet-processing machine, wherein a sheet to be separated is pivotable about a vertical axis extending at least approximately orthogonally to a transport direction of the sheet, as viewed in the transport direction thereof, in order to correct a skewed position of a leading edge thereof relative to at least one front lay. The method further includes determining, relative to the front lay, a skewed position of sheets oncoming at the front lay or resting at the top of the sheet pile, and displacing, transversely or approximately transversely to the transport direction, either the sheet pile, before the sheet is lifted therefrom, or the sheet lifted off the sheet pile, depending upon the determined skewed position, over a displacement distance that is of such length that, after the skewed-position correction, there is a defined spaced distance between a side edge of the sheet and at least one side lay.Type: GrantFiled: January 5, 2001Date of Patent: March 18, 2003Assignee: Heidelberger Druckmaschinen AGInventors: Hans Butterfass, Wolfgang Dolz, Jürgen Zeltner
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Patent number: 6499735Abstract: A method for separating a respective sheet from a sheet pile and transporting it to a sheet processing machine, wherein the respective sheet is lifted by at least one lifting suction device to a transfer level lying above a suction air intake level, and the respective sheet is taken over by at least one forwarding suction device at the transfer level, includes thereafter transporting the respective sheet by the forwarding suction device on the transfer level in a direction towards the sheet processing machine, and after transferring the sheet from the lifting suction device to the forwarding suction device, lifting the lifting suction device to an elevation level above the transfer level; a device for performing the method; and rotary printing machine and method of operation including the foregoing.Type: GrantFiled: December 18, 2000Date of Patent: December 31, 2002Assignee: Heidelberger Druckmaschinen AGInventor: Jürgen Zeltner
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Publication number: 20020124749Abstract: A drive device for producing an at least approximately sinusoidal speed pattern for a transport belt provided in a printing machine for transporting printing material selected from the group thereof consisting of sheets and signatures, includes non-round drive wheels rotatable about respective axes thereof, and a tensioning member by which the drive wheels are drivingly connected.Type: ApplicationFiled: March 8, 2002Publication date: September 12, 2002Inventor: Jurgen Zeltner
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Publication number: 20010006273Abstract: A method and device for aligning stacked or piled sheets in a feeder of a sheet-processing machine, wherein a sheet to be separated is pivotable about a vertical axis extending at least approximately orthogonally to a transport direction of the sheet, as viewed in the transport direction thereof, in order to correct a skewed position of a leading edge thereof relative to at least one front lay. The method further includes determining, relative to the front lay, a skewed position of sheets oncoming at the front lay or resting at the top of the sheet pile, and displacing, transversely or approximately transversely to the transport direction, either the sheet pile, before the sheet is lifted therefrom, or the sheet lifted off the sheet pile, depending upon the determined skewed position, over a displacement distance that is of such length that, after the skewed-position correction, there is a defined spaced distance between a side edge of the sheet and at least one side lay.Type: ApplicationFiled: January 5, 2001Publication date: July 5, 2001Inventors: Hans Butterfass, Wolfgang Dolz, Jurgen Zeltner
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Publication number: 20010006271Abstract: A method of controlling or regulating the vertical position of piled or stacked sheets, which includes determining at the leading edge and at the trailing edge, respectively, of the sheet resting on the top of the sheet pile, the vertical position of the sheet: and, depending upon the vertical position of the leading edge and the trailing edge, respectively, moving in the vertical direction at least one lifting element associated with the sheet trailing edge. The method further comprises, displacing the sheet pile and the lifting element, respectively, a given distance in the vertical direction, when a large discrepancy is found between the vertical position at the leading edge and a nominal value.Type: ApplicationFiled: December 26, 2000Publication date: July 5, 2001Inventors: Tobias Muller, Thomas Wolf, Jurgen Zeltner
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Publication number: 20010004143Abstract: A method for separating a respective sheet from a sheet pile and transporting it to a sheet processing machine, wherein the respective sheet is lifted by at least one lifting suction device to a transfer level lying above a suction air intake level, and the respective sheet is taken over by at least one forwarding suction device at the transfer level, includes thereafter transporting the respective sheet by the forwarding suction device on the transfer level in a direction towards the sheet processing machine, and after transferring the sheet from the lifting suction device to the forwarding suction device, lifting the lifting suction device to an elevation level above the transfer level; a device for performing the method; and rotary printing machine and method of operation including the foregoing.Type: ApplicationFiled: December 18, 2000Publication date: June 21, 2001Inventor: Jurgen Zeltner
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Patent number: 5984296Abstract: Device for cyclically lifting and lowering at least one lifting sucker in a feeder of a sheet-processing machine, wherein a sheet lifted by the lifting sucker is transferred to at least one pull sucker for further transport, the lifting sucker being operatively connected by a lifting-sucker transmission to a cyclically controlled drive, the lifting-sucker transmission including a coupler having a joint steplessly bringable onto various cam paths in accordance with a selective suction position of the lifting sucker, all of the cam paths having a common intersecting point.Type: GrantFiled: June 24, 1996Date of Patent: November 16, 1999Assignee: Heidelberger Druckmaschinen AktiengesellschaftInventors: Andreas Fricke, Jurgen Zeltner
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Patent number: 5895037Abstract: A drive transmission for a pull or forwarding sucker located in a suction head of a sheet feeder for translatorily driving a sucker-carrying support movable in a guide provided on a suction-head housing, the sucker-carrying support being connected articulatingly to at least one coupler swivelable about an axis extending transversely to the translatory motion of the sucker-carrying support, includes a first drive cam for moving the coupler and for effecting a forwarding motion, and a second drive cam for a roller lever mounted in the suction-head housing and being swivelably connected to the coupler, the second drive cam having a profile for leveling the translatory motion of the sucker-carrying support.Type: GrantFiled: January 17, 1997Date of Patent: April 20, 1999Assignee: Heidelberger Druckmaschinen AGInventors: Martin Baureis, Andreas Fricke, Jurgen Zeltner
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Patent number: 5687964Abstract: Device for contactless guidance of sheetlike material being dragged along a travel path, the device having a guide surface member extending spaced from the travel path and being provided with air-blowing nozzles, includes a guide zone formed in the guide surface member wherein the air-blowing nozzles are disposed in a manner that a common flow pattern or gap flow formed during guidance of the sheetlike material is determined essentially by a first velocity component in a direction of motion of the material along the travel path and by a second and a third velocity component directed towards two side edges, respectively, of the travel path, the second velocity component being associated with one of the side edges and the third velocity component being associated with the other of the side edge.Type: GrantFiled: August 3, 1995Date of Patent: November 18, 1997Assignee: Heidelberger Druckmaschinen AGInventors: Gunter Stephan, Richard Mack, Peter Thoma, Joachim Herrmann, Gerd Raasch, Michael Szeidl, Jurgen Zeltner
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Patent number: 5685534Abstract: Method for controlling a valve unit having a rotatable inner part, by which at least one of positive pressure and negative-pressure consumers of a sheet-processing machine is connectible to and disconnectible from a source of positive pressure and negative pressure, respectively, in accordance with an operating cycle of the sheet-processing machine, the operating cycle being repeated at a frequency variable between a minimum cycle frequency and a maximum cycle frequency, includes superimposing an adjusting speed on a rotary speed of the rotatable inner part of the valve unit; and device for performing the method.Type: GrantFiled: April 1, 1996Date of Patent: November 11, 1997Assignee: Heidelberger Druckmaschinen AGInventor: Jurgen Zeltner
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Patent number: 5456178Abstract: Printing machine with a sheet-guiding surface, at least part of which is a cover surface of a pneumatic-flow box, the cover surface being formed with pass-through openings for pneumatic fluid, includes a pneumatic-flow nozzle connecting the pneumatic-flow box to a source for supplying pneumatic fluid to the pneumatic-flow box, the pneumatic-flow box having a flow resistance profile decreasing therein with increasing distance from a location at which the pneumatic-flow nozzle is connected to the pneumatic-flow box.Type: GrantFiled: December 30, 1993Date of Patent: October 10, 1995Assignee: Heidelberger Druckmaschinen AGInventors: Manfred Henn, Josef Wehle, Jurgen Zeltner
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Patent number: 5398925Abstract: Device for achieving a flat contact of stock on a curved surface of a cylinder for transporting the stock into a printing nip includes a plurality of blowing-air bars disposed in a region between an impression cylinder and a transfer drum and upstream of the printing nip in transport direction of the stock, the blowing-air bars being directed for blowing air in a direction opposing the transport direction of the stock, at least one of the plurality of blowing-air bars being stationary and, with the other of the plurality of blowing-air bars, respectively, having a plurality of air-blowing nozzle-shaped outlets disposed in a substantially arrow-shaped arrangement on the respective circumferences thereof, the arrangement of outlets including a central outlet disposed farthest upstream of the arrangement of outlets in the transport direction so as to be a first one of the outlets to act upon a sheet being transported in the transport direction.Type: GrantFiled: June 1, 1993Date of Patent: March 21, 1995Assignee: Heidelberger Druckmaschinen AGInventor: Jurgen Zeltner
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Patent number: 5092578Abstract: A sheet feeder in a sheet-processing machine, comprising first blower nozzles for fanning and separating a top sheet of a sheet pile, the blower nozzles being directed at least at a rear edge of the top sheet in the sheet pile, a separating device for lifting the top sheet from the sheet pile, second blower nozzles for blowing supporting air under the top sheet in synchronism with an operating cycle of the sheet feeder, central blast-air supply system for the sheet feeder being connected to the first blower nozzles, and a blast-air source separate from the central blast-air supply system connected via a control valve to the second blower nozzles for supplying blast air thereto for supporting the sheet, and a device for operating the control valve in synchronism with the separating device.Type: GrantFiled: April 29, 1991Date of Patent: March 3, 1992Assignee: Heidelberger Druckmaschinen AGInventors: Dieter Bergmeier, Jurgen Zeltner