Patents Assigned to EEEA Entwicklungsgesellschaft fur Akustik mbH
  • Floor covering having a strong noise-reducing properties
    Patent number: 7279214
    Abstract: A floor covering characterized as having a strong noise-reducing properties for the interior trim of means of transport. The floor covering has, on the passenger side, a textile or non-textile surface, acoustically coupled through at least one microperforated sheet to a fibrous non-woven and/or foamed plastic. A microperforated sheet having a hole diameter from 0.2 to 0.5 mm and an interhole distance from 3 to 7 mm.
    Type: Grant
    Filed: September 1, 2001
    Date of Patent: October 9, 2007
    Assignees: EEEA Entwicklungsgesellschaft fur Akustik mbH, HP-Chemie Pelzer Research and Development Ltd.
    Inventors: Norbert Nicolai, Volkmar Schulze