CANTATION PROFILE FOR LIGHT-EMPTING BUILDING CONSTRUCTIONS

摘要

1508038 Insulating doors and windows ALCO BAUZUBEHOR GmbH & CO 29 July 1975 [2 Aug 1974] 31750/75 Headings EIJ and E1R A sound damping device comprises a perforated member 10 with a channel or channels disposed on one side of the member and communicating with the perforations, and sound absorbing material 9 on the other side of the member. The member is formed with flanges 12 extending between rows of perforations and facing the sound receiving area. The device is located between spaced panes of glass or panels, or is mounted so as to face the gap (38) between a frame (32) and window casement (30, Fig. 2).