Patents by Inventor Franz Grohmann

Franz Grohmann 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: 20240076833
    Abstract: A roll cover and a roll in particular for use in a machine line for the production or processing of a fibrous web is provided, wherein the roll cover includes a radial outer functional layer which provides the surface of the roll cover in contact with the web, and wherein the functional layer has structural elements, in particular in the form of grooves and/or bores, wherein the functional layer is constructed of an elastomer material with a Poisson number greater than 0.4, between 0.45 and 0.5.
    Type: Application
    Filed: November 7, 2023
    Publication date: March 7, 2024
    Applicant: Voith Patent GmbH
    Inventors: Franz Grohmann, Christine Rinner, Werner Dobler, Martin Breineder
  • Publication number: 20240068164
    Abstract: A roll cover and a roll in particular for use in a machine line for the production or processing of a fibrous web is provided, wherein the roll cover includes a radial outer functional layer which provides the surface of the roll cover in contact with the web, and wherein the functional layer has structural elements, in particular in the form of grooves and/or bores, wherein the functional layer is constructed of an elastomer material with a Poisson number greater than 0.4, between 0.45 and 0.5.
    Type: Application
    Filed: November 7, 2023
    Publication date: February 29, 2024
    Applicant: Voith Patent GmbH
    Inventors: Franz Grohmann, Nina Eggers, Anton Horak, Stefan Pollaschek
  • Patent number: 11499037
    Abstract: A roll covering includes a functional layer formed of a polymer which is a blend of at least one rubber and one millable polyurethane rubber. The polymer includes from 65% by weight to 85% by weight of the at least one rubber and from 15% by weight to 35% by weight of the millable polyurethane rubber. A roll having the roll core, a method of using the roll and a combination of the roll and a heated drying cylinder are also provided.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 15, 2022
    Assignee: Voith Patent GmbH
    Inventors: Franz Grohmann, Anton Horak, Nina Eggers, Stefan Pollaschek
  • Publication number: 20210284825
    Abstract: A roll covering includes a functional layer formed of a polymer which is a blend of at least one rubber and one millable polyurethane rubber. The polymer includes from 65% by weight to 85% by weight of the at least one rubber and from 15% by weight to 35% by weight of the millable polyurethane rubber. A roll having the roll core, a method of using the roll and a combination of the roll and a heated drying cylinder are also provided.
    Type: Application
    Filed: July 25, 2017
    Publication date: September 16, 2021
    Inventors: FRANZ GROHMANN, ANTON HORAK, NINA EGGERS, STEFAN POLLASCHEK
  • Patent number: 10655276
    Abstract: A method produces or machines a roller which is suitable to be used in a machine for producing or processing a fibrous web. The roller contains a roller core and at least one functional layer. The method is characterized in that the method includes the application of a functional layer. The application of the functional layer is performed by applying a coating substrate to the surface of a roller core. The application takes place simultaneously over at least half the roller width, preferably over 75% of the roller width, particularly preferably over the entire roller width. The entire applied coating substrate or parts thereof are hardened, forming a solidified structure.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: May 19, 2020
    Assignee: Voith Patent GmbH
    Inventors: Wesley Brooks, Robert Eberhardt, Siegfried Graser, Franz Grohmann, Ting Liu, Ralf Moser, Stefan Probst-Schendzielorz, Matthias Schmitt, Michael Wokurek
  • Publication number: 20190186076
    Abstract: A method for coating a drying cylinder of a drying apparatus for drying and/or smoothing a fibrous web includes carrying out the coating within the drying apparatus. A system including a coating unit for coating the circumferential surface of a drying cylinder and a drying apparatus, as well as a method for converting or producing a drying apparatus, are also provided.
    Type: Application
    Filed: July 25, 2017
    Publication date: June 20, 2019
    Inventors: FRANZ GROHMANN, ALEXANDER ETSCHMAIER
  • Patent number: 10145065
    Abstract: A roll cover is particular suited for use in an apparatus for producing or surface finishing a fibrous web, such as a web of paper or of cardboard. The roll cover is formed on a roll core of metal or of a fiber-reinforced plastic and includes a matrix system wherein fillers are provided. The fillers provided are three or more in number and they have different median particle sizes.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: December 4, 2018
    Assignee: Voith Patent GmbH
    Inventors: Franz Grohmann, Martin Breineder, Thomas Breineder
  • Patent number: 9863091
    Abstract: A roll for use in a machine for producing and/or further processing a fibrous web, such as a paper, paperboard, or tissue web, includes a roll cover having at least some sections or regions formed of a metal material and a coating formed on the roll cover. The coating is formed of a metal, ceramic and/or cermet material, or at least some sections or regions of the coating include one of those materials. An alloy region is situated between the roll cover and the coating.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: January 9, 2018
    Assignee: Voith Patent GmbH
    Inventors: Alexander Etschmaier, Franz Grohmann
  • Publication number: 20170247838
    Abstract: A method produces or machines a roller which is suitable to be used in a machine for producing or processing a fibrous web. The roller contains a roller core and at least one functional layer. The method is characterized in that the method includes the application of a functional layer. The application of the functional layer is performed by applying a coating substrate to the surface of a roller core. The application takes place simultaneously over at least half the roller width, preferably over 75% of the roller width, particularly preferably over the entire roller width. The entire applied coating substrate or parts thereof are hardened, forming a solidified structure.
    Type: Application
    Filed: July 17, 2015
    Publication date: August 31, 2017
    Inventors: WESLEY BROOKS, ROBERT EBERHARDT, SIEGFRIED GRASER, FRANZ GROHMANN, TING LIU, RALF MOSER, STEFAN PROBST-SCHENDZIELORZ, MATTHIAS SCHMITT, MICHAEL WOKUREK
  • Publication number: 20160130756
    Abstract: A roll for use in a machine for producing and/or further processing a fibrous web, such as a paper, paperboard, or tissue web, includes a roll cover having at least some sections or regions formed of a metal material and a coating formed on the roll cover. The coating is formed of a metal, ceramic and/or cermet material, or at least some sections or regions of the coating include one of those materials. An alloy region is situated between the roll cover and the coating.
    Type: Application
    Filed: March 11, 2014
    Publication date: May 12, 2016
    Inventors: Alexander ETSCHMAIER, Franz GROHMANN
  • Publication number: 20150148206
    Abstract: A roller is particularly suited for use in a machine for manufacturing and/or finishing a fibrous web, such as a paper web or cardboard web. The roller includes a roller core and, configured thereon, a roller covering. The covering has at least one layer of a resin material with at least one fiber material embedded therein. The at least one layer has an outer surface that is suitable for coming into direct or indirect contact with the fibrous web. The at least one fiber material here comprises fibers having a linear weight from 0.5 to 5 dtex, preferably from 0.5 to 2 dtex.
    Type: Application
    Filed: April 11, 2013
    Publication date: May 28, 2015
    Applicant: VOITH PATENT GMBH
    Inventors: Hubert Bischof, Martin Breineder, Franz Grohmann
  • Publication number: 20150090133
    Abstract: A roll cover is particular suited for use in an apparatus for producing or surface finishing a fibrous web, such as a web of paper or of cardboard. The roll cover is formed on a roll core of metal or of a fiber-reinforced plastic and includes a matrix system wherein fillers are provided. The fillers provided are three or more in number and they have different median particle sizes.
    Type: Application
    Filed: March 22, 2013
    Publication date: April 2, 2015
    Inventors: Franz Grohmann, Martin Breineder, Thomas Breineder
  • Publication number: 20150051318
    Abstract: A roll cover is produced, in particular for use in a machine for producing and/or processing a fibrous web such as a web of paper or cardboard. The roll cover includes least one layer of a resin matrix that is filled with at least one particulate filler. The filler particles are produced in a polymer component of the resin matrix and/or introduced into the resin matrix from a dispersion via matrix exchange.
    Type: Application
    Filed: March 22, 2013
    Publication date: February 19, 2015
    Inventors: Franz Grohmann, Martin Breineder, Thomas Breineder
  • Patent number: 8496785
    Abstract: A combination of a press felt with a pressure and/or suction roll covering for a papermaking machine, including a porous press felt with a carrier structure. The pressure or suction roll covering having a circumferential groove surface structure having a groove width in the range of 0.5 mm to 1.5 mm, a distance between grooves in the range of 1.5 to 2.5 mm and a groove depth in the range of 1.5 mm to 4 mm. A percentage of an open surface relative to an overall surface of the pressure roll covering is in a range of 20% to 50%. The suction roll covering additionally having an arrangement of holes with a plurality of suction holes completely penetrating through the suction roll covering, whereby a percentage of an open surface in relation to an overall surface of the suction roll covering is in a range of 30% to 50%.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: July 30, 2013
    Assignee: Voith Patent GmbH
    Inventors: Michael Wokurek, Johan Einarsson, Gamsj├Ąger Norbert, Antje Berendes, Alexander Etschmaier, Franz Grohmann
  • Publication number: 20120193058
    Abstract: A combination of a press felt with a pressure and/or suction roll covering for a papermaking machine, including a porous press felt with a carrier structure. The pressure or suction roll covering having a circumferential groove surface structure having a groove width in the range of 0.5 mm to 1.5 mm, a distance between grooves in the range of 1.5 to 2.5 mm and a groove depth in the range of 1.5 mm to 4 mm. A percentage of an open surface relative to an overall surface of the pressure roll covering is in a range of 20% to 50%. The suction roll covering additionally having an arrangement of holes with a plurality of suction holes completely penetrating through the suction roll covering, whereby a percentage of an open surface in relation to an overall surface of the suction roll covering is in a range of 30% to 50%.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 2, 2012
    Inventors: Michael Wokurek, Johan Einarsson, Gamsj├Ąger Norbert, Antje Berendes, Alexander Etschmaier, Franz Grohmann