Patents Assigned to SWISS RALTEC GMBH
  • High rise building with a stairwell and a intake air shaft
    Patent number: 9187918
    Abstract: A high-rise building has a stairwell, an air supply shaft, inlet openings connecting the air supply shaft to the stairwell, and a pressure system for keeping the stairwell free from smoke. The stairwell is vertically divided into several partial spaces. The separation is performed by at least one partition. Each partition has a door enabling a passage from one partial space of the stairwell into an adjacent partial space.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: November 17, 2015
    Assignee: SWISS RALTEC GMBH
    Inventors: Horst A. Ermer, Hans Gaida