Patents by Inventor Ralf Friedmann

Ralf Friedmann 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: 10144210
    Abstract: There is described a method of increasing the output of a transfer film (1) upon embossing, in particular hot embossing, wherein the transfer film (1) has a carrier film (1a) and a transfer layer portion (1b) which is releasable from the carrier film (1a). During a first embossing operation first regions (10) of the transfer layer portion (1b) which are arranged removed from each other at a spacing a are transferred by means of a first embossing tool from the transfer film (1) onto at least one substrate (2), wherein first openings (10a) are produced at the spacing a in the transfer layer portion (1b) of the transfer film (1). After the first embossing operation the transfer film (1) is wound up after the first embossing operation and fed to at least a further embossing operation.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 4, 2018
    Assignee: LEONHARD KURZ STIFTUNG & CO. KG
    Inventors: Ljubisa Drinic, Ralf Friedmann
  • Patent number: 9849624
    Abstract: A film-embossing apparatus with a hot-embossing device which has a heated embossing stamp. With the formation of a contact pressure, a transfer layer, arranged on a carrier film, of a hot-embossing film is transferred to a surface of a workpiece. The hot-embossing device has control inputs and outputs. The film-embossing apparatus has an industrial robot with control inputs and outputs. The control inputs and outputs of the hot-embossing device and of the industrial robot are connected to a control unit. The industrial robot is formed such that it guides the workpiece to the hot-embossing device, positions the workpiece on the embossing stamp, guides the workpiece past the embossing stamp, and guides the embossed workpiece away from the hot-embossing device. The industrial robot can also position the hot-embossing device on the workpiece.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: December 26, 2017
    Assignee: LEONHARD KURZ STIFTUNG & CO. KG
    Inventors: Ljubisa Drinic, Michael Triepel, Ralf Friedmann, Thomas Meier
  • Publication number: 20160067955
    Abstract: There is described a method of increasing the output of a transfer film (1) upon embossing, in particular hot embossing, wherein the transfer film (1) has a carrier film (1a) and a transfer layer portion (1b) which is releasable from the carrier film (1a). During a first embossing operation first regions (10) of the transfer layer portion (1b) which are arranged removed from each other at a spacing a are transferred by means of a first embossing tool from the transfer film (1) onto at least one substrate (2), wherein first openings (10a) are produced at the spacing a in the transfer layer portion (1b) of the transfer film (1). After the first embossing operation the transfer film (1) is wound up after the first embossing operation and fed to at least a further embossing operation.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 10, 2016
    Inventors: Ljubisa Drinic, Ralf Friedmann
  • Publication number: 20160023398
    Abstract: A film-embossing apparatus (1) with a hot-embossing device (2) is described which has a heated embossing stamp (21). With the formation of a contact pressure a transfer layer (51), arranged on a carrier film (52), of a hot-embossing film (5) is transferred to a surface of a workpiece (4). The hot-embossing device (2) has control inputs and outputs. The film-embossing apparatus (1) has an industrial robot (3) with control inputs and outputs. The control inputs and outputs of the hot-embossing device and of the industrial robot are connected to a control unit (7). The industrial robot (3) is formed such that it guides the workpiece (4) to the hot-embossing device (2), positions the workpiece (4) on the embossing stamp (21), guides the workpiece (4) past the embossing stamp (21), and guides the embossed workpiece away from the hot-embossing device (2). It can also be provided that the industrial robot (3) positions the hot-embossing device (2) on the workpiece (4).
    Type: Application
    Filed: March 19, 2014
    Publication date: January 28, 2016
    Inventors: Ljubisa Drinic, Michael Triepel, Ralf Friedmann, Thomas Meier
  • Patent number: 9162438
    Abstract: There is described a method of increasing the output of a transfer film (1) upon embossing, in particular hot embossing, wherein the transfer film (1) has a carrier film (1a) and a transfer layer portion (1b) which is releasable from the carrier film (1a). During a first embossing operation first regions (10) of the transfer layer portion (1b) which are arranged removed from each other at a spacing a are transferred by means of a first embossing tool from the transfer film (1) onto at least one substrate (2), wherein first openings (10a) are produced at the spacing a in the transfer layer portion (1b) of the transfer film (1). After the first embossing operation the transfer film (1) is wound up after the first embossing operation and fed to at least a further embossing operation.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: October 20, 2015
    Assignee: LEONHARD KURZ STIFTUNG & CO. KG
    Inventors: Ljubisa Drinic, Ralf Friedmann
  • Publication number: 20100140822
    Abstract: There is described a method of increasing the output of a transfer film (1) upon embossing, in particular hot embossing, wherein the transfer film (1) has a carrier film (1a) and a transfer layer portion (1b) which is releasable from the carrier film (1a). During a first embossing operation first regions (10) of the transfer layer portion (1b) which are arranged removed from each other at a spacing a are transferred by means of a first embossing tool from the transfer film (1) onto at least one substrate (2), wherein first openings (10a) are produced at the spacing a in the transfer layer portion (1b) of the transfer film (1). After the first embossing operation the transfer film (1) is wound up after the first embossing operation and fed to at least a further embossing operation.
    Type: Application
    Filed: June 12, 2008
    Publication date: June 10, 2010
    Applicant: LEONHARD KURZ STIFTUNG & CO. KG
    Inventors: Ljubisa Drinic, Ralf Friedmann
  • Patent number: 7097604
    Abstract: In a guide roller for a stamping machine for deflecting a stamping foil web and/or a substrate web to be stamped upon, so that the guide roller has a negligibly low degree of friction, fixed to a roller spindle that is fixed with respect to the machine is at least one porous air-permeable spindle sleeve at which at least one roller sleeve is rotatably mounted. The roller spindle has a compressed gas passage for acting on the or each spindle sleeve with compressed gas to produce a gas cushion between the or each respective spindle sleeve and the associated roller sleeve.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: August 29, 2006
    Assignee: Leonard Kurz GmbH & Co.,KG
    Inventors: Georg Kaluza, Ralf Friedmann
  • Publication number: 20030114283
    Abstract: In a guide roller for a stamping machine for deflecting a stamping foil web and/or a substrate web to be stamped upon, so that the guide roller has a negligibly low degree of friction, fixed to a roller spindle that is fixed with respect to the machine is at least one porous air-permeable spindle sleeve at which at least one roller sleeve is rotatably mounted. The roller spindle has a compressed gas passage for acting on the or each spindle sleeve with compressed gas to produce a gas cushion between the or each respective spindle sleeve and the associated roller sleeve.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 19, 2003
    Inventors: Georg Kaluza, Ralf Friedmann