Patents by Inventor Johannes Kaulfuss

Johannes Kaulfuss 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).

  • Headphone set
    Patent number: 7940947
    Abstract: According to the invention a headphone set comprises a hoop band, to each of the two ends of which is fixed a respective acoustic transducer and which extends arcuately in a plane, with at least one joint for folding the ends of the hoop band inwardly in the plane and an elastic region for resiliently expanding and narrowing the hoop band is either characterized in that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the transducers into the plane and that arranged in the region of the two ends of the hoop band is a respective connecting structure which can be connected to each other and which then in co-operating relationship hold the folded-in ends of the hoop band in a crossed position or that the one joint for folding the ends of the hoop band inwardly is arranged at the apex of the hoop band, that the headphone set is of mirror image symmetry about a plane and that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the t
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: May 10, 2011
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Johannes Kaulfuss, Axel Grell
  • Headphone set
    Publication number: 20070297633
    Abstract: According to the invention a headphone set comprising a hoop band, to each of the two ends of which is fixed a respective acoustic transducer and which extends arcuately in a plane, with at least one joint for folding the ends of the hoop band inwardly in the plane and an elastic region for resiliently expanding and narrowing the hoop band is either characterised in that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the transducers into the plane and that arranged in the region of the two ends of the hoop band is a respective connecting structure which can be connected to each other and which then in co-operating relationship hold the folded-in ends of the hoop band in a crossed position or that the one joint for folding the ends of the hoop band inwardly is arranged at the apex of the hoop band, that the headphone set is of mirror image symmetry about a plane and that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the
    Type: Application
    Filed: August 30, 2007
    Publication date: December 27, 2007
    Inventors: Johannes Kaulfuss, Axel Grell
  • Headphones
    Patent number: 7292703
    Abstract: According to the invention a headphone set comprises a hoop band, to each of the two ends of which is fixed a respective acoustic transducer and which extends accurately in a plane, with at least one joint for folding the ends of the hoop band inwardly in the plane and an elastic region for resiliently expanding and narrowing the hoop band is either characterized in that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the transducers into the plane and that arranged in the region of the two ends of the hoop band is a respective connecting structure which can be connected to each other and which then in co-operating relationship hold the folded-in ends of the hoop band in a crossed position or that the one joint for folding the ends of the hoop band inwardly is arranged at the apex of the hoop band, that the headphone set is of mirror image symmetry about a plane and that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: November 6, 2007
    Assignee: Sennheiser Electronic GmbH & Co. KG
    Inventors: Johannes Kaulfuss, Axel Grell
  • Headphones
    Publication number: 20050244027
    Abstract: According to the invention a headphone set comprising a hoop band, to each of the two ends of which is fixed a respective acoustic transducer and which extends arcuately in a plane, with at least one joint for folding the ends of the hoop band inwardly in the plane and an elastic region for resiliently expanding and narrowing the hoop band is either characterised in that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the transducers into the plane and that arranged in the region of the two ends of the hoop band is a respective connecting structure which can be connected to each other and which then in co-operating relationship hold the folded-in ends of the hoop band in a crossed position or that the one joint for folding the ends of the hoop band inwardly is arranged at the apex of the hoop band, that the headphone set is of mirror image symmetry about a plane and that the fixing of each of the transducers to the ends of the hoop band has a joint for pivoting the
    Type: Application
    Filed: February 20, 2003
    Publication date: November 3, 2005
    Inventors: Johannes Kaulfuss, Axel Grell