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).

  • Patent number: 6572097
    Abstract: 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: Grant
    Filed: December 10, 2001
    Date of Patent: June 3, 2003
    Assignee: Quad/Tech, Inc.
    Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
  • Patent number: 6572098
    Abstract: 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: Grant
    Filed: October 8, 2001
    Date of Patent: June 3, 2003
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
  • Patent number: 6464218
    Abstract: 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: Grant
    Filed: May 15, 2001
    Date of Patent: October 15, 2002
    Assignee: Quad/Tech, Inc.
    Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
  • Patent number: 6419219
    Abstract: 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: Grant
    Filed: April 16, 2001
    Date of Patent: July 16, 2002
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
  • Publication number: 20020074721
    Abstract: 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: Application
    Filed: October 8, 2001
    Publication date: June 20, 2002
    Applicant: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
  • Patent number: 6394445
    Abstract: 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: Grant
    Filed: December 30, 1998
    Date of Patent: May 28, 2002
    Assignee: Quad/Tech, Inc.
    Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
  • Publication number: 20020043757
    Abstract: 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: Application
    Filed: December 10, 2001
    Publication date: April 18, 2002
    Applicant: Quad/Tech, Inc.
    Inventors: Ingermar S. d'Agrella, Eric L. Kuhne, Gary J. Laatsch, John M. Neary, Karl P. Schaefer
  • Publication number: 20010040340
    Abstract: 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: Application
    Filed: May 15, 2001
    Publication date: November 15, 2001
    Applicant: Quad/Tech, Inc.
    Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
  • Patent number: 6302392
    Abstract: 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: Grant
    Filed: December 29, 1998
    Date of Patent: October 16, 2001
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Eric L. Kuhne
  • Publication number: 20010022421
    Abstract: 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: Application
    Filed: April 16, 2001
    Publication date: September 20, 2001
    Applicant: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
  • Patent number: 6254093
    Abstract: 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: Grant
    Filed: March 14, 2000
    Date of Patent: July 3, 2001
    Assignee: Quad/Tech, Inc.
    Inventors: Ingermar S. d'Agrella, Karl P. Schaefer
  • Patent number: 6247692
    Abstract: 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: Grant
    Filed: April 12, 1999
    Date of Patent: June 19, 2001
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, Richard J. Fox
  • Patent number: 6244593
    Abstract: 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: Grant
    Filed: August 11, 1999
    Date of Patent: June 12, 2001
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella
  • Patent number: 6231044
    Abstract: 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: Grant
    Filed: August 16, 1999
    Date of Patent: May 15, 2001
    Assignee: Quad/Tech, Inc.
    Inventors: John M. Neary, Karl P. Schaefer, Nick R. Schetter
  • Patent number: 6131903
    Abstract: 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: Grant
    Filed: July 20, 1999
    Date of Patent: October 17, 2000
    Assignee: Quad/Tech, Inc.
    Inventors: Karl P. Schaefer, Ingermar S. d'Agrella, John M. Neary, Richard J. Fox
  • Patent number: 6116595
    Abstract: 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: Grant
    Filed: April 13, 1998
    Date of Patent: September 12, 2000
    Assignee: Quad/Graphics, Inc.
    Inventors: Ingermar S. d'Agrella, Karl P. Schaefer
  • Patent number: 4500223
    Abstract: 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: Grant
    Filed: September 14, 1983
    Date of Patent: February 19, 1985
    Assignee: W. H. Brady Co.
    Inventors: Gerald T. Downing, Karl P. Schaefer