Patents by Inventor Stefan Zendler

Stefan Zendler 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: 12263650
    Abstract: A device is shown and described for ultrasonic welding of composite material, in particular composite material of package sleeves and/or packages, including at least two tools for ultrasonic welding, in particular a sonotrode and an anvil. Each tool has a functional surface for contact with the material to be welded. The functional surfaces of the tools are aligned approximately parallel to one another in such a way that a gap with an approximately horizontal seam direction is created between the functional surfaces. The tools are mounted in such a way that the width of the gap can be changed by at least one of the tools being movable along a feed direction, and at least one joint having at least one axis of rotation about which one of the tools is rotatable. In order to enable optimal adaptation of the movably mounted tool—for example the sonotrode—to the materials to be welded and their size, it is proposed that the position of the axis of rotation can be changed.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: April 1, 2025
    Assignee: SIG Services AG
    Inventors: Felix Breitmar, Thomas Hose, Stefan Zendler
  • Patent number: 12194561
    Abstract: An ultrasonic oscillation system with a converter which can convert an electrical alternating voltage into a mechanical oscillation, and a sonotrode of mass ms, which is intended to be set into oscillation with the mechanical oscillation, the converter being coupled to the sonotrode in such a way that the vibration generated by the converter generates a vibration excitation of the sonotrode, the ultrasonic vibration system being intended to be operated with a vibration of wavelength ?. In order to provide an ultrasonic oscillation system in which the problems described are at least reduced, the ultrasonic oscillation system has a mechanical resonator of mass mr, which can be brought into resonant oscillation with an oscillation of wavelength ?, the mass mr of the resonator being larger than the mass ms of the sonotrode.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: January 14, 2025
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Francois Brouet, Stefan Zendler, Volker Portje, Ulrich Vogler
  • Publication number: 20240416447
    Abstract: An ultrasonic oscillation system with a converter which can convert an electrical alternating voltage into a mechanical oscillation, and a sonotrode of mass ms, which is intended to be set into oscillation with the mechanical oscillation, the converter being coupled to the sonotrode in such a way that the vibration generated by the converter generates a vibration excitation of the sonotrode, the ultrasonic vibration system being intended to be operated with a vibration of wavelength ?. In order to provide an ultrasonic oscillation system in which the problems described are at least reduced, the ultrasonic oscillation system has a mechanical resonator of mass mr, which can be brought into resonant oscillation with an oscillation of wavelength ?, the mass mr of the resonator being larger than the mass ms of the sonotrode.
    Type: Application
    Filed: October 6, 2022
    Publication date: December 19, 2024
    Inventors: Francois BROUET, Stefan ZENDLER, Volker PORTJE, Ulrich VOGLER
  • Publication number: 20240342998
    Abstract: A device is shown and described for ultrasonic welding of composite material, in particular composite material of package sleeves and/or packages, including at least two tools for ultrasonic welding, in particular a sonotrode and an anvil. Each tool has a functional surface for contact with the material to be welded. The functional surfaces of the tools are aligned approximately parallel to one another in such a way that a gap with an approximately horizontal seam direction is created between the functional surfaces. The tools are mounted in such a way that the width of the gap can be changed by at least one of the tools being movable along a feed direction, and at least one joint having at least one axis of rotation about which one of the tools is rotatable. In order to enable optimal adaptation of the movably mounted tool for example the sonotrode to the materials to be welded and their size, it is proposed that the position of the axis of rotation can be changed.
    Type: Application
    Filed: September 20, 2022
    Publication date: October 17, 2024
    Inventors: Felix Breitmar, Thomas Hose, Stefan Zendler
  • Patent number: 11938556
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?/2, wherein there is provided a holder for holding the ultrasonic vibration unit.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 26, 2024
    Assignee: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventors: Raffaele Mancini, Johannes Pohl, Ulrich Vogler, Stefan Zendler
  • Patent number: 11897047
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?, wherein there can be provided an amplitude transformer arranged between the sonotrode and the converter, wherein there is provided a holder for holding the ultrasonic vibration unit.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 13, 2024
    Assignee: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventors: Raffaele Mancini, Johannes Pohl, Ulrich Vogler, Stefan Zendler
  • Publication number: 20240034004
    Abstract: A sonotrode for an ultrasonic welding apparatus, having a lower portion of length u and an upper portion of length o, the upper portion and the lower portion adjacent on a longitudinal axis of the sonotrode, and the total length of the sonotrode in the direction of the longitudinal axis being u+o, the lower portion having a sealing surface oriented perpendicular to the longitudinal axis, the sealing surface contacting a material to be processed. The lower portion has a slot, wherein the slot extends from the sealing surface to a side of the lower portion opposing the sealing surface, such that the lower portion of the sonotrode is divided into a plurality of segments which lie adjacent each other in a direction perpendicular to the longitudinal axis.
    Type: Application
    Filed: December 7, 2021
    Publication date: February 1, 2024
    Inventors: Ulrich VOGLER, Stefan ZENDLER
  • Publication number: 20220402068
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?, wherein there can be provided an amplitude transformer arranged between the sonotrode and the converter, wherein there is provided a holder for holding the ultrasonic vibration unit.
    Type: Application
    Filed: December 12, 2019
    Publication date: December 22, 2022
    Inventors: Raffaele Mancini, Johannes Pohl, Ulrich Vogler, Stefan Zendler
  • Patent number: 11484966
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 1, 2022
    Assignee: HERRMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventors: Raffaele Mancini, Matthias Schweitzer, Ulrich Vogler, Stefan Zendler
  • Publication number: 20220088700
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?/2, wherein there is provided a holder for holding the ultrasonic vibration unit.
    Type: Application
    Filed: December 12, 2019
    Publication date: March 24, 2022
    Inventors: Raffaele Mancini, Johannes Pohl, Ulrich Vogler, Stefan Zendler
  • Publication number: 20220072651
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?, wherein there can be provided an amplitude transformer arranged between the sonotrode and the converter.
    Type: Application
    Filed: December 12, 2019
    Publication date: March 10, 2022
    Inventors: Volker Aust, Ulrich Vogler, Stefan Zendler
  • Publication number: 20220040786
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 10, 2022
    Inventors: Raffaele Mancini, Matthias Schweitzer, Ulrich Vogler, Stefan Zendler
  • Publication number: 20220040785
    Abstract: The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?, wherein there can be provided an amplitude transformer arranged between the sonotrode and the converter, wherein there is provided a holder for holding the ultrasonic vibration unit.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 10, 2022
    Inventors: Raffaele Mancini, Johannes Pohl, Ulrich Vogler, Stefan Zendler
  • Patent number: 9908286
    Abstract: The present invention concerns A sonotrode with a wheel-shaped portion having a wheel axis and of a diameter d, which has two substantially circular main surfaces and a substantially cylindrical sealing surface of the width b, that connects the main surfaces. To provide a corresponding sonotrode in which the triangular frequency differs markedly from the main frequency it is proposed according to the invention that at least one main surface has a non-central thickened portion which in a sectional view perpendicularly to the main surface has a convex region which is not arranged on the wheel axis.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: March 6, 2018
    Assignee: Herrmann Ultraschalltechnik GmbH & Co. KG
    Inventors: Ulrich Vogler, Stefan Zendler
  • Publication number: 20160332362
    Abstract: The present invention concerns A sonotrode with a wheel-shaped portion having a wheel axis and of a diameter d, which has two substantially circular main surfaces and a substantially cylindrical sealing surface of the width b, that connects the main surfaces. To provide a corresponding sonotrode in which the triangular frequency differs markedly from the main frequency it is proposed according to the invention that at least one main surface has a non-central thickened portion which in a sectional view perpendicularly to the main surface has a convex region which is not arranged on the wheel axis.
    Type: Application
    Filed: February 5, 2015
    Publication date: November 17, 2016
    Applicant: Herrman Ultraschalltechnik GmbH & Co. KG
    Inventors: Ulrich Vogler, Stefan Zendler
  • Patent number: 9449595
    Abstract: The present invention relates to an ultrasonic sonotrode with a main sonotrode body and a sealing area arranged on one side of the main sonotrode body. The main sonotrode body has two through-slits extending in or through the main sonotrode body respectively along a slit axis. These through-slits intersect in such a way that a through-channel through the main sonotrode body is formed from the one through-slit into the other through-slit. This creates a slit portion that is formed both by the one through-slit and the other through-slit. Provided in this main sonotrode body is a processing channel, which extends along a processing channel axis from a side area of the main sonotrode body up to the through-channel and is arranged substantially symmetrically about the processing channel axis.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: September 20, 2016
    Assignee: Hermann Ultraschalltechnik GmbH & Co. KG
    Inventor: Stefan Zendler
  • Publication number: 20140092712
    Abstract: The present invention relates to an ultrasonic sonotrode with a main sonotrode body and a sealing area arranged on one side of the main sonotrode body. The main sonotrode body has two through-slits extending in or through the main sonotrode body respectively along a slit axis. These through-slits intersect in such a way that a through-channel through the main sonotrode body is formed from the one through-slit into the other through-slit. This creates a slit portion that is formed both by the one through-slit and the other through-slit. Provided in this main sonotrode body is a processing channel, which extends along a processing channel axis from a side area of the main sonotrode body up to the through-channel and is arranged substantially symmetrically about the processing channel axis.
    Type: Application
    Filed: March 12, 2012
    Publication date: April 3, 2014
    Applicant: HERMANN ULTRASCHALLTECHNIK GMBH & CO. KG
    Inventor: Stefan Zendler