EP 0320680 B2 19960313 - Jointless acoustical ceiling
Title (en)
Jointless acoustical ceiling
Title (de)
Fugenlose Akustikdecke
Title (fr)
Plafond acoustique sans joints
Publication
Application
Priority
DE 8716596 U 19871216
Abstract (en)
[origin: US5058705A] A sound-absorbing cover element for use as a component in a gap-free acoustic cover including a perforated plate (22) covered on its side facing an enclosed space with a layer (24) of nonwoven fiber material which covers the perforations. The plate is lined on its side facing away from the enclosed space with a sound-inhibiting layer (28) covered on its side facing away from the perforated plate (22) with a cover film (30) which is impermeable to air.
IPC 1-7
IPC 8 full level
E04B 9/00 (2006.01)
CPC (source: EP US)
E04B 9/001 (2013.01 - EP US); Y10T 428/24273 (2015.01 - EP US); Y10T 428/24298 (2015.01 - EP US); Y10T 428/24322 (2015.01 - EP US); Y10T 428/24331 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
US 5058705 A 19911022; AT E67263 T1 19910915; CA 1326636 C 19940201; DE 3864803 D1 19911017; DE 8716596 U1 19880204; EP 0320680 A1 19890621; EP 0320680 B1 19910911; EP 0320680 B2 19960313; ES 2010167 A4 19891101; ES 2010167 T3 19920416; ES 2010167 T5 19960516; GR 3002712 T3 19930125; GR 3019519 T3 19960731; GR 890300139 T1 19900314
DOCDB simple family (application)
US 28037688 A 19881206; AT 88119707 T 19881125; CA 585660 A 19881212; DE 3864803 T 19881125; DE 8716596 U 19871216; EP 88119707 A 19881125; ES 88119707 T 19881125; GR 890300139 T 19900314; GR 910401314 T 19910912; GR 960400907 T 19960402