Patents by Inventor Thorsten Leethaus

Thorsten Leethaus 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: 20240181755
    Abstract: An article having a multilayer base unit with elastic properties has at least one inner layer A and at least one textile reinforcement layer B and at least one intermediate layer C and at least one outer layer D, at least one intermediate layer C of the base unit being formed from a rubber compound that includes chloroprene rubber (CR) or chlorosulfonated polyethylene (CSM) or alkylated chlorosulfonated polyethylene (ACSM) or chlorinated polyethylene (CM) or chlorobutyl rubber (CIIR) or bromobutyl rubber (BIIR) or polyepichlorohydrin rubber (CO; ECO; ETER) or brominated copolymer of isobutylene and paramethylstyrene (BIMS), in each case alone or in combination, and 3 to 40 phr of at least one intumescent flame retardant, and the intermediate layer C being in direct contact with a textile reinforcement layer B.
    Type: Application
    Filed: March 16, 2022
    Publication date: June 6, 2024
    Inventors: Thorsten Leethaus, Dieter Borvitz, Jens Storre, Peter Metz
  • Publication number: 20210355305
    Abstract: The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m2/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g and a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2), wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.
    Type: Application
    Filed: July 27, 2021
    Publication date: November 18, 2021
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Dieter Borvitz, Klaus Schobert, Barbara Passon-Wesseloh, Jens Storre
  • Patent number: 10975232
    Abstract: The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains a first aluminum trihydrate (ATH_1) and at least one further aluminum trihydrate (ATH_2) and at least one amorphous silicic acid having spherical particle geometry, wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 13, 2021
    Assignee: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Dieter Borvitz, Klaus Schobert, Barbara Passon-Wesseloh, Jens Storre
  • Patent number: 10920845
    Abstract: The invention relates to an article having a main body with elastic characteristics, in particular an air spring bellows, a metal-rubber element or a vibration damper. The article has a single-layer or multilayer main body having elastic properties, wherein the outer layer C has at least two laminas C1/C2 and each lamina is formed from an elastomer mixture, and wherein at least one layer D composed of a weave or loop-formed knit or loop-drawn knit has been embedded into this outer layer. This leads to further optimization of the fire-retardant properties.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 16, 2021
    Assignee: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Claus-Lueder Mahnken, Gerd Niklaus, Christoph Zander, Mark Lindenberg, Rene Sandmann
  • Publication number: 20200377703
    Abstract: The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m2/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100g and a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2), wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.
    Type: Application
    Filed: December 17, 2018
    Publication date: December 3, 2020
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Dieter Borvitz, Klaus Schobert, Barbara Passon-Wesseloh, Jens Storre
  • Publication number: 20200362147
    Abstract: The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains a first aluminum trihydrate (ATH_1) and at least one further aluminum trihydrate (ATH_2) and at least one amorphous silicic acid having spherical particle geometry, wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.
    Type: Application
    Filed: December 17, 2018
    Publication date: November 19, 2020
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Dieter Borvitz, Klaus Schobert, Barbara Passon-Wesseloh, Jens Storre
  • Publication number: 20200340543
    Abstract: The invention relates to an article having a single-layered or multilayered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. To improve the flame-retardant properties the main body of the article consists of or contains at least one layer D which is constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m2/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g.
    Type: Application
    Filed: December 17, 2018
    Publication date: October 29, 2020
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Dieter Borvitz, Klaus Schobert, Barbara Passon-Wesseloh, Jens Storre
  • Patent number: 10352388
    Abstract: The invention relates to an article comprising a main body (6, 7, 8) that consists of a polymer material having elastic properties, particularly an air spring bellows (2), a metal-rubber element or a vibration damper. In order for fire-retardant properties to be improved, the article is provided, partially or fully, with a cover (9) formed from at least one flat textile structure and/or at least one three-dimensional textile structure and/or at least one shrink film. The cover can be fire-retardant itself or can be equipped to be fire-retardant.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: July 16, 2019
    Assignee: ContiTech Luftfedersysteme GmbH
    Inventors: Christoph Zander, Thorsten Leethaus, Mark Lindenberg, Hans-Harald Kielbasiewicz, Lars Bucksch
  • Patent number: 10344818
    Abstract: The invention relates to an article (1) having a main body composed of a polymeric material having elastic properties, in particular an air spring bellows (1), a metal-rubber element or a vibration damper. In order to improve its fire-retardant and/or flame-retardant properties, the article has been provided partially or completely with a flock (9).
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: July 9, 2019
    Assignee: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Christoph Zander, Mark Lindenberg, Claus-Lueder Mahnken
  • Publication number: 20190048963
    Abstract: The invention relates to an article having a main body with elastic characteristics, in particular an air spring bellows, a metal-rubber element or a vibration damper. The article has a single-layer or multilayer main body having elastic properties, wherein the outer layer C has at least two laminas C1/C2 and each lamina is formed from an elastomer mixture, and wherein at least one layer D composed of a weave or loop-formed knit or loop-drawn knit has been embedded into this outer layer. This leads to further optimization of the fire-retardant properties.
    Type: Application
    Filed: June 13, 2016
    Publication date: February 14, 2019
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Claus-Lueder Mahnken, Gerd Niklaus, Christoph Zander, Mark Lindenberg, Rene Sandmann
  • Publication number: 20180259027
    Abstract: The invention relates to an article (1) having a main body composed of a polymeric material having elastic properties, in particular an air spring bellows (1), a metal-rubber element or a vibration damper. In order to improve its fire-retardant and/or flame-retardant properties, the article has been provided partially or completely with a flock (9).
    Type: Application
    Filed: June 13, 2016
    Publication date: September 13, 2018
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Thorsten Leethaus, Christoph Zander, Mark Lindenberg, Claus-Lueder Mahnken
  • Publication number: 20170307042
    Abstract: The invention relates to an article comprising a main body (6, 7, 8) that consists of a polymer material having elastic properties, particularly an air spring bellows (2), a metal-rubber element or a vibration damper. In order for fire-retardant properties to be improved, the article is provided, partially or fully, with a cover (9) formed from at least one flat textile structure and/or at least one three-dimensional textile structure and/or at least one shrink film. The cover can be fire-retardant itself or can be equipped to be fire-retardant.
    Type: Application
    Filed: July 16, 2015
    Publication date: October 26, 2017
    Applicant: ContiTech Luftfedersysteme GmbH
    Inventors: Christoph Zander, Thorsten Leethaus, Mark Lindenberg, Hans-Harald Kielbasiewicz, Lars Bucksch