Patents by Inventor Karl P. Schaefer
Karl P. Schaefer 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: 6572097Abstract: A signature slow-down section in a folder of a printing press for slowing down signatures is provided. The folder is driven by a folder drive mechanism and the signature slow-down section includes a frame, a slow-down mechanism supported by the frame, and a motor connected to the slow-down mechanism for rotatably driving the slow-down mechanism separately from the folder drive mechanism. The motor is selectively operable to drive the slow-down mechanism at a speed in response to the position of the signatures relative to the slow-down mechanism.Type: GrantFiled: December 10, 2001Date of Patent: June 3, 2003Assignee: Quad/Tech, Inc.Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
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Patent number: 6572098Abstract: Provided is a sheet diverter for directing signatures moving in serial fashion along a diverter path to one of a plurality of collation paths. The sheet diverter includes a pair of diverter rolls for directing a signature to one of the plurality of collation paths and a diverter wedge for deflecting the signature to a selected one thereof. The diverter wedge is positioned between the diverter rolls so as to reach high into the diverter path thereby providing increased support to the signature as it travels from between the diverter rolls to the diverter wedge. The diverter rolls are permitted to intermesh with the diverter wedge so as to allow the diverter wedge to be so positioned.Type: GrantFiled: October 8, 2001Date of Patent: June 3, 2003Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
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Patent number: 6464218Abstract: An improved delivery section of a folder of a printing press in which the bucket assemblies and side guides are adjustable to accommodate varying widths of signatures.Type: GrantFiled: May 15, 2001Date of Patent: October 15, 2002Assignee: Quad/Tech, Inc.Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
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Patent number: 6419219Abstract: A delivery apparatus for sorting a single stream of signatures into two or more streams, the apparatus includes two counter-rotating bucket assemblies. Each bucket assembly includes a plurality of buckets spaced from one another along a common axis. The respective common axis of each bucket assembly is disposed parallel to the common axis of the other. Each of the buckets of one of the bucket assemblies is disposed adjacent to and in a respective common plane with a respective one of the buckets of the other of the bucket assemblies. Further, each of the buckets includes a plurality of blades, the tips of the blades of each bucket defining a circumference. A respective circumference of one bucket overlaps the circumference of the other bucket disposed in the common plane. Two neighboring blades have respective surfaces defining a slot therebetween.Type: GrantFiled: April 16, 2001Date of Patent: July 16, 2002Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
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Publication number: 20020074721Abstract: Provided is a sheet diverter for directing signatures moving in serial fashion along a diverter path to one of a plurality of collation paths. The sheet diverter includes a pair of diverter rolls for directing a signature to one of the plurality of collation paths and a diverter wedge for deflecting the signature to a selected one thereof. The diverter wedge is positioned between the diverter rolls so as to reach high into the diverter path thereby providing increased support to the signature as it travels from between the diverter rolls to the diverter wedge. The diverter rolls are permitted to intermesh with the diverter wedge so as to allow the diverter wedge to be so positioned.Type: ApplicationFiled: October 8, 2001Publication date: June 20, 2002Applicant: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
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Patent number: 6394445Abstract: An apparatus for decelerating signatures moving in tandem fashion through sheet processing equipment is provided. A pair of counter-rotating cams lying in general face-to-face relation along a travel path of the signatures reach into the travel path of the signatures to effectively grab the trailing end of each signature so as to decrease the speed of each signature as the signature continues or to further processing equipment in the sheet handling system. Also provided is a guide assembly which increases control over the signatures during the decelerating process and during transport of the signatures to further downstream processing equipment. The guide assembly includes grooved rollers which act as pulleys for belts near the exit stream of the slow-down equipment, wherein the protruding segments between belt grooves act to push the signatures away from the belt.Type: GrantFiled: December 30, 1998Date of Patent: May 28, 2002Assignee: Quad/Tech, Inc.Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
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Publication number: 20020043757Abstract: An apparatus for decelerating signatures moving in tandem fashion through sheet processing equipment is provided. A pair of counter-rotating cams lying in general face-to-face relation along a travel path of the signatures reach into the travel path of the signatures to effectively grab the trailing end of each signature so as to decrease the speed of each signature as the signature continues or to further processing equipment in the sheet handling system.Type: ApplicationFiled: December 10, 2001Publication date: April 18, 2002Applicant: Quad/Tech, Inc.Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
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Publication number: 20010040340Abstract: An improved delivery section of a folder of a printing press in which the bucket assemblies and side guides are adjustable to accommodate varying widths of signatures.Type: ApplicationFiled: May 15, 2001Publication date: November 15, 2001Applicant: Quad/Tech, Inc.Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
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Patent number: 6302392Abstract: Provided is a sheet diverter for directing signatures moving in serial fashion along a diverter path to one of a plurality of collation paths. The sheet diverter includes a pair of diverter rolls for directing a signature to one of the plurality of collation paths and a diverter wedge for deflecting the signature to a selected one thereof. The diverter wedge is positioned between the diverter rolls so as to reach high into the diverter path thereby providing increased support to the signature as it travels from between the diverter rolls to the diverter wedge. The diverter rolls are permitted to intermesh with the diverter wedge so as to allow the diverter wedge to be so positioned.Type: GrantFiled: December 29, 1998Date of Patent: October 16, 2001Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
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Publication number: 20010022421Abstract: A delivery apparatus for sorting a single stream of signatures into two or more streams, the apparatus includes two counter-rotating bucket assemblies. Each bucket assembly includes a plurality of buckets spaced from one another along a common axis. The respective common axis of each bucket assembly is disposed parallel to the common axis of the other. Each of the buckets of one of the bucket assemblies is disposed adjacent to and in a respective common plane with a respective one of the buckets of the other of the bucket assemblies. Further, each of the buckets includes a plurality of blades, the tips of the blades of each bucket defining a circumference. A respective circumference of one bucket overlaps the circumference of the other bucket disposed in the common plane. Two neighboring blades have respective surfaces defining a slot therebetween.Type: ApplicationFiled: April 16, 2001Publication date: September 20, 2001Applicant: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
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Patent number: 6254093Abstract: A diverter wedge for a pinless folder is adapted for cooperative association with a diverter guide mechanism operating to direct the lateral disposition of the leading edge of a signature relative to the wedge to one of a plurality of collation paths. The diverter wedge includes an elongated bar having a longitudinal axis and a generally triangular cross section transverse to said longitudinal axis. The bar is fixed in position and also includes a base, a vertex edge opposite the base, and planar diversion surfaces diverging from the vertex edge, an air inlet port connectable to a source of pressurized air, and a plurality of air discharge ports connected to the air inlet port and intersecting one of the planar diversion surfaces. At least one air discharge port intersects the vertex edge.Type: GrantFiled: March 14, 2000Date of Patent: July 3, 2001Assignee: Quad/Tech, Inc.Inventors: Ingermar S. d'Agrella, Karl P. Schaefer
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Patent number: 6247692Abstract: A delivery apparatus for sorting a single stream of signatures into two or more streams, the apparatus includes two counter-rotating bucket assemblies. Each bucket assembly includes a plurality of buckets spaced from one another along a common axis. The respective common axis of each bucket assembly is disposed parallel to the common axis of the other. Each of the buckets of one of the bucket assemblies is disposed adjacent to and in a respective common plane with a respective one of the buckets of the other of the bucket assemblies. Further, each of the buckets includes a plurality of blades, the tips of the blades of each bucket defining an outer circle. A respective outer circle of one bucket overlaps the outer circle of the opposing bucket disposed in the common plane. Two neighboring blades have respective surfaces defining a slot therebetween.Type: GrantFiled: April 12, 1999Date of Patent: June 19, 2001Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
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Patent number: 6244593Abstract: Provided is a sheet diverter for directing signatures moving in serial fashion along a path to one of a plurality of collation paths. The sheet diverter includes a non-uniform angular velocity drive mechanism, the function of which is to improve the collation process such that the quality of signatures is improved as the signatures move along one of the plurality of collation paths and to increase the speed of the folder.Type: GrantFiled: August 11, 1999Date of Patent: June 12, 2001Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella
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Patent number: 6231044Abstract: An improved delivery section of a folder of a printing press in which the bucket assemblies and side guides are adjustable to accommodate varying widths of signatures.Type: GrantFiled: August 16, 1999Date of Patent: May 15, 2001Assignee: Quad/Tech, Inc.Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
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Patent number: 6131903Abstract: An adjustable signature stripping mechanism for stripping signatures from a rotating bucket assembly in a folder of a printing press. The mechanism includes a stripper shaft having a mounting portion and a pivot axis and a plurality of strippers mounted on the stripper shaft for stripping signatures from the bucket assembly and wherein the strippers are non-rotatable relative to the stripper shaft and slidable positionable along the stripper shaft.Type: GrantFiled: July 20, 1999Date of Patent: October 17, 2000Assignee: Quad/Tech, Inc.Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, John M. Neary, Richard J. Fox
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Patent number: 6116595Abstract: A diverter wedge for a pinless folder is adapted for cooperative association with a diverter guide mechanism operating to direct the lateral disposition of the leading edge of a signature relative to the wedge to one of a plurality of collation paths. The diverter wedge includes an elongated bar having a longitudinal axis and a generally triangular cross section transverse to said longitudinal axis. The bar is fixed in position and also includes a base, a vertex edge opposite the base, and planar diversion surfaces diverging from the vertex edge, an air inlet port connectable to a source of pressurized air, and a plurality of air discharge ports connected to the air inlet port and intersecting one of the planar diversion surfaces. At least one air discharge port intersects the vertex edge.Type: GrantFiled: April 13, 1998Date of Patent: September 12, 2000Assignee: Quad/Graphics, Inc.Inventors: Ingermar S. d'Agrella, Karl P. Schaefer
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Patent number: 4500223Abstract: A carrier (10) for holding a plurality of pages (2) including a support member (13) and at least one ring (12) extending therefrom that includes a lower retention finger (20) of substantially uniform thickness and a flexible upper finger (21) of decreasing thickness. The fingers (20, 21) have free ends (22, 24) adjacent to each other and a flexible tang (25) at the free end of the flexible upper finger is positioned along one or more rigid tangs (26) at the free end of the lower retention finger.Type: GrantFiled: September 14, 1983Date of Patent: February 19, 1985Assignee: W. H. Brady Co.Inventors: Gerald T. Downing, Karl P. Schaefer