Patents by Inventor Ronald Fluch

Ronald Fluch 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).

  • Publication number: 20230100562
    Abstract: The subject of the disclosure is a method for stacking sheet metal parts (4) composed of an electrical steel strip (3) or sheet in order to form lamination stacks (2), each with a stack height (hp) within a tolerance range (?h) from a predetermined desired stack height (hs).
    Type: Application
    Filed: March 2, 2021
    Publication date: March 30, 2023
    Inventors: Ronald Fluch, Peter ATZM√úLLER
  • Publication number: 20230023947
    Abstract: A method of producing a coated electrical strip includes hydrolyzing a surface of a rolled aluminum-alloyed electrical strip. A pretreatment layer containing an organosilicon compound is applied over the surface of the rolled aluminum-alloyed electrical strip. Subsequently, the rolled aluminum-alloyed electrical strip coated with the pretreatment layer is coated with a baking varnish layer.
    Type: Application
    Filed: November 30, 2020
    Publication date: January 26, 2023
    Applicant: voestalpine Stahl GmbH
    Inventors: Ronald FLUCH, Roland BRAIDT
  • Patent number: 11529796
    Abstract: A coated sheet metal strip includes a rolled sheet metal strip having a first flat side and a second flat side. A first layer over the first flat side includes a carrier layer. The carrier layer contains a reaction accelerator for an adhesive and stores the reaction accelerator on a physical basis. A second layer, including the adhesive, is applied over the second flat side. The second layer is free of the reaction accelerator or any reaction accelerator.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: December 20, 2022
    Assignee: VOESTALPINE STAHL GMBH
    Inventor: Ronald Fluch
  • Publication number: 20220389281
    Abstract: An electrical steel strip or sheet with a thermosetting water-based hot-melt adhesive varnish layer provided on at least one of its flat sides, a method for producing such an electrical steel strip or sheet, and a laminated core made therefrom are disclosed. In order to produce a particularly storable and aging-stable thermosetting hot-melt adhesive varnish layer on the electrical steel strip or sheet in the B state, it is proposed for the stoichiometric ratio of the epoxy groups of the epoxy resin or epoxy resins relative to the hydrogen atoms of the at least two amino groups of the hardener that is latent at room temperature to lie in the range from 1.33:1 to 5:1.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 8, 2022
    Inventors: Ronald FLUCH, Hector MENDEZ
  • Publication number: 20220241837
    Abstract: A method for stamping and stacking sheet metal parts (2) to form lamination stacks (3) is disclosed. In order to facilitate the separation of joined sheet metal parts (2) into lamination stacks (3), a second stamping-out of at least one second sheet metal part (20) is performed in a step preceding the first stamping-out, as well as a pushing-back of the separating element (19) into a region of the electrical steel strip (5) from which the second sheet metal part (20) has been stamped and a pushing-out of the separating element (19) from the electrical steel strip (5) with the first stamping-out.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 4, 2022
    Inventor: Ronald FLUCH
  • Publication number: 20220111430
    Abstract: A method for stamping and stacking sheet metal parts to form lamination stacks is disclosed. In order to facilitate the separation of joined sheet metal parts into lamination stacks, a second stamping-out of at least one second sheet metal part is performed in a step preceding the first stamping-out, as well as a pushing-back of the separating element into a region of the electrical steel strip from which the second sheet metal part has been stamped and a pushing-out of the separating element from the electrical steel strip with the first stamping-out.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Inventor: Ronald FLUCH
  • Patent number: 11292028
    Abstract: In a process for producing a lacquer-coated electric sheet strip a first insulation lacquer layer is applied wet across at least one side of an electric sheet strip. Across the wet first insulation lacquer layer a wet second insulation lacquer layer is applied. In a drying oven drying of the first insulation lacquer layer and the second insulation lacquer layer is performed.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 5, 2022
    Assignee: VOESTALPINE STAHL Gmbh
    Inventors: Ronald Fluch, Timothy Keppert
  • Publication number: 20210309894
    Abstract: An electrical steel strip or sheet with at least one thermo-hardenable, water-based hot-melt adhesive varnish layer provided on one of its flat sides, a method for producing such an electric steel strip or sheet, and a lamination stack made therefrom are disclosed. In order to be able to have an increased melt viscosity during the baking process, it is proposed that the thermo-hardenable, water-based hot-melt adhesive varnish layer also have a pre-cross-linking agent that bonds with the epoxy resin or with a mixture of epoxy resins, the pre-cross-linking agent being an organic amine with three amino groups, namely an organic triamine or a mixture of such organic amines.
    Type: Application
    Filed: May 20, 2019
    Publication date: October 7, 2021
    Inventors: Ronald FLUCH, Timothy KEPPERT
  • Patent number: 11107628
    Abstract: A coil and an electrical strip or electrical sheet with at least one heat-hardening hotmelt varnish, namely a baked enamel layer, provided on its flat sides, which has an epoxy resin base, at least one hardener, and at least one filler, are disclosed. In order to achieve a high storage stability and long-term temperature stability, the proposal is made for the filler of the baked enamel layer to have a metal carbonate, sulfate, sulfide, silicate, or phosphate or any mix of a plurality of these.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: August 31, 2021
    Assignee: voestalpine Stahl GmbH
    Inventors: Ronald Fluch, Roman Tiefenthaller
  • Patent number: 11090920
    Abstract: A continuous strip method for producing an electric strip laminate which is wound into a coil is proposed in which at least two electric strips are pressed against each other on their flat sides and are integrally bonded to form an electric strip laminate and in a further step, this electric strip laminate is wound into a coil. More particularly, a first electric strip is coated on at least one of its flat sides with a first thermally activatable hot melt adhesive lacquer, the first hot melt adhesive lacquer on the first electric strip is thermally activated, and then the electric strips are pressed against each other on their flat sides with the activated first hot melt adhesive lacquer layer between these flat sides and a second electric strip is supplied to this pressing process at a temperature below the activation temperature of the first hot melt adhesive lacquer layer on the first electric strip.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: August 17, 2021
    Assignee: voestalpine Stahl GmbH
    Inventors: Ronald Fluch, Carina Kern
  • Publication number: 20210162454
    Abstract: A process for producing a coated electrical steel strip includes application of a pretreatment layer over a first flat side of a rolled electrical steel strip. The layer thickness of the pretreatment layer is in the range from 10 nm to 100 nm, in particular from 20 nm to 50 nm. The rolled electrical steel strip which has been coated with the pretreatment layer is then coated with an insulating lacquer layer over the pretreatment layer. The insulating lacquer layer is applied by roll application using a roll and no deliberate drying and/or crosslinking of the pretreatment layer is carried out after application of the pretreatment layer and before coating with the insulating lacquer layer.
    Type: Application
    Filed: June 14, 2019
    Publication date: June 3, 2021
    Applicant: voestalpine Stahl GmbH
    Inventors: Bernhard STRAUSS, Ronald FLUCH, Roman TIEFENTHALLER
  • Publication number: 20210146657
    Abstract: A coated sheet metal strip includes a rolled sheet metal strip having a first flat side and a second flat side. A first layer over the first flat side includes a carrier layer. The carrier layer contains a reaction accelerator for an adhesive and stores the reaction accelerator on a physical basis. A second layer, including the adhesive, is applied over the second flat side. The second layer is free of the reaction accelerator or any reaction accelerator.
    Type: Application
    Filed: April 12, 2019
    Publication date: May 20, 2021
    Applicant: voestalpine Stahl GmbH
    Inventor: Ronald FLUCH
  • Patent number: 10755842
    Abstract: A method for producing an electric strip laminate wound into a coil is disclosed, in which at least two metallic electric strips that are electrically insulated from each other are integrally bonded to form an electric strip laminate and in another step, are wound into a coil. In order to ensure a reproducible method, the invention proposes that the electrical strips, which are each electrically insulated on at least one flat side with a baked enamel layer, be joined to each other by means of baked enamel layers facing each other and be integrally bonded to form an electric strip laminate by activating the chemical cross-linking of the two baked enamel layers.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 25, 2020
    Assignee: voestalpine Stahl GmbH
    Inventors: Carina Kern, Ronald Fluch
  • Publication number: 20200086343
    Abstract: In a process for producing a lacquer-coated electric sheet strip a first insulation lacquer layer is applied wet across at least one side of an electric sheet strip. Across the wet first insulation lacquer layer a wet second insulation lacquer layer is applied. In a drying oven drying of the first insulation lacquer layer and the second insulation lacquer layer is performed.
    Type: Application
    Filed: March 16, 2018
    Publication date: March 19, 2020
    Applicant: voestalpine Stahl GmbH
    Inventors: Ronald FLUCH, Timothy KEPPERT
  • Publication number: 20190366699
    Abstract: A continuous strip method for producing an electric strip laminate which is wound into a coil is proposed in which at least two electric strips are pressed against each other on their flat sides and are integrally bonded to form an electric strip laminate and in a further step, this electric strip laminate is wound into a coil, More particularly, a first electric strip is coated on at least one of its flat sides with a first thermally activatable hot melt adhesive lacquer, the first hot melt adhesive lacquer on the first electric strip is thermally activated, and then the electric strips are pressed against each other on their flat sides with the activated first hot melt adhesive lacquer layer between these flat sides and a second electric strip is supplied to this pressing process at a temperature below the activation temperature of the first hot melt adhesive lacquer layer on the first electric strip.
    Type: Application
    Filed: February 15, 2017
    Publication date: December 5, 2019
    Inventors: Ronald Fluch, Carina Kern
  • Patent number: 10391741
    Abstract: A laminated core and a method for connecting sheet metal parts to form a laminated core, wherein sheet metal parts are separated from a sheet metal strip having, at least in some regions, a layer of curable polymer adhesive, and the sheet metal parts with adhesive-coated sides facing one another are provided above one another and are bonded under pressure to form a laminated core. In order to create advantageous method conditions, according to the invention a mixture comprising water and a thermoplastic and/or cross-linkable adhesion promoter is provided on at least one of the adhesive layers facing one another during bonding of the sheet metal parts.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 27, 2019
    Assignee: voestalpine Stahl GmbH
    Inventor: Ronald Fluch
  • Publication number: 20180122573
    Abstract: A coil and an electrical strip or electrical sheet with at least one heat-hardening hotmelt varnish, namely a baked enamel layer, provided on its flat sides, which has an epoxy resin base, at least one hardener, and at least one filler, are disclosed. In order to achieve a high storage stability and long-term temperature stability, the proposal is made for the filler of the baked enamel layer to have a metal carbonate, sulfate, sulfide, silicate, or phosphate or any mix of a plurality of these.
    Type: Application
    Filed: March 24, 2016
    Publication date: May 3, 2018
    Applicant: Voestalpine Stahl GMBH
    Inventors: Ronald Fluch, Roman Tiefenthaller
  • Publication number: 20180082773
    Abstract: A method for producing an electric strip laminate wound into a coil is disclosed, in which at least two metallic electric strips that are electrically insulated from each other are integrally bonded to form an electric strip laminate and in another step, are wound into a coil. In order to ensure a reproducible method, the invention proposes that the electrical strips, which are each electrically insulated on at least one flat side with a baked enamel layer, be joined to each other by means of baked enamel layers facing each other and be integrally bonded to form an electric strip laminate by activating the chemical cross-linking of the two baked enamel layers.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 22, 2018
    Inventors: Carina Kern, Ronald Fluch
  • Patent number: 9669611
    Abstract: The invention relates to a method for connecting sheet metal parts (4) to form a laminated core (11), wherein sheet metal parts (4) are separated, in particular punched, from a sheet metal strip (2) that has, at least in some areas, a layer having curable polymer adhesive (12), and the sheet metal parts (4) are preliminarily connected to form a laminated core (11), the preliminary connection comprising plasticizing the adhesive (12) at least in some areas and joining the sheet metal parts (4) in order to connect the sheet metal parts by means of the plasticized adhesive (12) of at least one of the sheet metal parts (4), and in a subsequent step the laminated core (11) having preliminarily connected sheet metal parts (4) is subjected to a curing of the adhesive (12). In order to create an advantageous connection between the sheet metal parts, the plasticizing of the adhesive (12) comprises the introduction of a softener (16), in particular H2O.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: June 6, 2017
    Assignee: Voestalpine Stahl GmbH
    Inventors: Martin Peruzzi, Ronald Fluch, Reinhold Stotz, Bernhard Strauss, Franz Dorninger
  • Publication number: 20150314563
    Abstract: A laminated core and a method for connecting sheet metal parts to form a laminated core, wherein sheet metal parts are separated from a sheet metal strip having, at least in some regions, a layer of curable polymer adhesive, and the sheet metal parts with adhesive-coated sides facing one another are provided above one another and are bonded under pressure to form a laminated core. In order to create advantageous method conditions, according to the invention a mixture comprising water and a thermoplastic and/or cross-linkable adhesion promoter is provided on at least one of the adhesive layers facing one another during bonding of the sheet metal parts.
    Type: Application
    Filed: December 11, 2013
    Publication date: November 5, 2015
    Inventor: Ronald Fluch