Patents Assigned to NABER HOLDING GmbH & Company KG
  • Wall sleeve
    Publication number: 20080153410
    Abstract: The invention relates to a wall sleeve with a ventilation opening at a guide tube (2), and a cover plate (5), which is mounted at the end of the guide tube and can be moved between a closing position and an open position, said cover plate (5) automatically opening and closing against a reset force, propelled by the pressure difference between the air pressure in the guide tube (2) and the external ambient air.
    Type: Application
    Filed: November 13, 2007
    Publication date: June 26, 2008
    Applicant: NABER HOLDING GmbH & Company KG
    Inventors: Hans-Joachim Naber, Wolf-Christoph Friebel