EP 0475486 A1 19920318 - Sound-damping cover and method for manufacturing same.
Title (en)
Sound-damping cover and method for manufacturing same.
Title (de)
Schalldämmende Abdeckung und Verfahren zu ihrer Herstellung.
Title (fr)
Couverture isolant acoustiquement et son procédé de fabrication.
Publication
Application
Priority
NL 9001840 A 19900817
Abstract (en)
The invention relates to a sound-damping cover (27) intended for placing over a light fixture (22) arranged in a ceiling construction (20) in order to reduce the sound transmission therethrough, which cover (27) consists at least substantially of mineral wool and has a form such that it can rest on the ceiling construction (20) with its bottom edge at least substantially without clearance, and to a method for manufacturing a sound-damping cover (27), comprising the steps of: (1) providing a plate substantially consisting of mineral wool; (2) forming two mutually perpendicular pairs of parallel curve lines, which together bound the upper plate and which, with the associated edge of the plate, each bound the standing walls; (3) removing the corner zones bounded by intersecting fold lines; and (4) bending the thus created edge zones through substantially 90 DEG in the same direction such that these edge zones form the standing walls. <IMAGE>
IPC 1-7
IPC 8 full level
E04B 9/00 (2006.01); E04B 9/32 (2006.01); E04C 2/40 (2006.01)
CPC (source: EP US)
E04B 9/001 (2013.01 - EP); E04B 9/045 (2013.01 - EP US); E04B 9/32 (2013.01 - EP); E04C 2/405 (2013.01 - EP); F21S 8/026 (2013.01 - EP); F21Y 2103/00 (2013.01 - EP US)
Citation (search report)
- [Y] DE 1214850 B 19660421 - NOVA LUX GES, et al
- [Y] US 4210070 A 19800701 - DAYUS BARRY R [CA], et al
- [Y] NL 7014103 A 19710406
- [A] NL 7710940 A 19790409 - IR PIETER BENJAMIN HANGELBROEK
- [A] US 3615964 A 19711026 - MALONE JOSEPH G
- [A] DE 2830935 A1 19800124 - TAUBERT WILHELM
Designated contracting state (EPC)
BE DE DK FR GB LU NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 91202103 A 19910819; NL 9001840 A 19900817