Patents Assigned to Leister Technologies AG
  • Patent number: 10052709
    Abstract: Welding machine for edge-side connection at the edge of overlapping material webs, wherein the materials are connectable to one another under the effect of heat and subsequent pressure, with a chassis on which at least guide rollers, a heating device and at least one pressure roller are arranged. The heating device has a cantilevered contact heating element that can be inserted laterally between the edges of the material webs, wherein the chassis is driven by an electric motor which is arranged on a longitudinal leg of the chassis. The electric motor according to the invention is formed as a brushless DC motor and the reduction gear as a planetary gear, which are united by a drum drive motor. In this case, the direct current motor is preferably a disk rotor motor. The chassis has a lateral leg which is adjustable perpendicularly to the working direction relative to the longitudinal leg.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 21, 2018
    Assignee: Leister Technologies AG
    Inventors: Roger Burgler, Felix Schilter
  • Patent number: 10040248
    Abstract: An automatic welding machine for lap welding the edges of plastic webs, comprising a movable supporting frame, a heating device for partially melting the plastic webs, at least two opposing, counter-rotating pressing rollers and/or advancing rollers, at least one of which being driven, and at least one driving device comprising a drive motor and at least one gearbox for driving the pressing and/or advancing rollers, wherein the pressing rollers and/or advancing rollers are driven by the driving device by way of at least one flexible shaft. Furthermore, the gearbox can be implemented as a worm gear mechanism comprising a worm that is seated directly on a motor shaft of the drive motor and two counter-rotating worm gears driven by the worm.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: August 7, 2018
    Assignee: Leister Technologies AG
    Inventors: Adolf Niederberger, Bruno von Wyl, Mathias Frei
  • Patent number: 9925716
    Abstract: An automatic welding machine, comprising a supporting frame and a tensioning device for reversibly joining at least two opposing booms to one another and applying a tension force between these, having an open position in which the opposing booms are separated from one another by a gap and a closed position in which the opposing booms are joined to one another and braced with respect to one another. One boom is mounted in a torsion-proof manner on the tensioning device and is pivotable in relation to the other boom and can be moved out of the open position into the closed position by the pivoting of the tensioning device.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: March 27, 2018
    Assignee: Leister Technologies AG
    Inventors: Adolf Niederberger, Mathias Frei, Bruno von Wyl
  • Patent number: 9415541
    Abstract: A hot-wedge welding device for overlap welding plastic webs, comprising a hot wedge, a pressure device for pressing the plastic webs against the hot wedge which comprises a respective pressure unit associated with one of the hot-wedge flat sides, and further comprising two mutually opposing pressure rollers. The hot wedge is pivotably mounted on a bearing shaft by way of a bearing bushing, which extends between the two hot-wedge flat sides parallel to the hot-wedge front edge at a distance therefrom. The hot wedge is mounted to have defined degrees of freedom with respect to the bearing shaft in the longitudinal direction and in the transverse direction of the bearing bushing, which in addition to the rotational movement of the hot wedge about the transverse axis thereof, also allow a tilting movement of the hot wedge about the longitudinal axis thereof and a vertical displacement of the hot wedge.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 16, 2016
    Assignee: Leister Technologies AG
    Inventors: Lukas Gisler, Bruno Von Wyl
  • Patent number: 9006608
    Abstract: The invention relates to a process for the adjustment of a laser light spot of high intensity for the laser processing of work pieces as well as a laser device for performing the proposed process. The laser device comprises a laser emitting a laser beam and at least one focusing lens for converging the laser beam as well as an optical operating element for adjusting the beam diameter of the laser beam. The invention proposes to use as operating element a diffractive optical element that separates the laser beam emitted by the laser into partial laser beams, with the partial laser beams generated by the diffractive optical element being assembled to form a resulting laser beam that acts on the work piece. By means of a suitable design of the diffractive optical element it is possible to adjust, in particular enlarge, the diameter of the laser light spot as required.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: April 14, 2015
    Assignee: Leister Technologies AG
    Inventors: Ulrich Gubler, Daniel Vogler, Christoph Raab
  • Patent number: 8948577
    Abstract: The hand-held hot air device, preferably for the local heating of thermoplastic materials, with a housing that forms a wand-shaped handle part with air inlet openings, and with an air guidance tube that protrudes from the handle part and radially delimits an air canal, with an electric heating element contained in the air guidance tube and an electric motor with a fan wheel contained in the handle part, and with an electronic control system arranged inside the handle part with one semiconductor power switch each arranged upstream of both the heating element and the electric motor, and with a display screen and an operating device for the hand-held hot air device arranged on the outside of the handle part.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: February 3, 2015
    Assignee: Leister Technologies AG
    Inventors: Stephan Eberli, Bruno Von Wyl
  • Patent number: D726793
    Type: Grant
    Filed: May 10, 2014
    Date of Patent: April 14, 2015
    Assignee: Leister Technologies AG
    Inventors: Bruno von Wyl, Lukas Gisler
  • Patent number: D737876
    Type: Grant
    Filed: May 10, 2014
    Date of Patent: September 1, 2015
    Assignee: Leister Technologies AG
    Inventors: Bruno von Wly, Lukas Gisler
  • Patent number: D740629
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: October 13, 2015
    Assignee: Leister Technologies AG
    Inventors: Andreas Furling, Felix Schilter
  • Patent number: D743015
    Type: Grant
    Filed: February 22, 2014
    Date of Patent: November 10, 2015
    Assignee: Leister Technologies AG
    Inventors: Hans Arnold, Giuseppe Di Miceli
  • Patent number: D743016
    Type: Grant
    Filed: February 22, 2014
    Date of Patent: November 10, 2015
    Assignee: Leister Technologies AG
    Inventors: Hans Arnold, Giuseppe Di Miceli
  • Patent number: D746653
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: January 5, 2016
    Assignee: Leister Technologies AG
    Inventors: Andreas Furling, Felix Schilter
  • Patent number: D750458
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 1, 2016
    Assignee: Leister Technologies AG
    Inventors: Andreas Furling, Hans Arnold
  • Patent number: D780239
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: February 28, 2017
    Assignee: Leister Technologies AG
    Inventors: Roger Burgler, Haruka Shimazu
  • Patent number: D780240
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: February 28, 2017
    Assignee: Leister Technologies AG
    Inventors: Roger Burgler, Haruka Shimazu
  • Patent number: D813279
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: March 20, 2018
    Assignee: Leister Technologies AG
    Inventors: Leo Wallimann, Haruka Shimazu
  • Patent number: D814539
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: April 3, 2018
    Assignee: Leister Technologies AG
    Inventors: Leo Wallimann, Haruka Shimazu
  • Patent number: D818329
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 22, 2018
    Assignee: Leister Technologies AG
    Inventors: Andreas Furling, Adam Warkiewicz
  • Patent number: D833491
    Type: Grant
    Filed: July 1, 2017
    Date of Patent: November 13, 2018
    Assignee: Leister Technologies AG
    Inventors: Benedikt Rieser, Haruka Shimazu
  • Patent number: D845367
    Type: Grant
    Filed: July 1, 2017
    Date of Patent: April 9, 2019
    Assignee: Leister Technologies AG
    Inventors: Benedikt Rieser, Haruka Shimazu