EP 0297572 B1 19910502 - MEMBRANE FOR LOUDSPEAKER
Title (en)
MEMBRANE FOR LOUDSPEAKER
Publication
Application
Priority
- DE 3722832 A 19870703
- DE 3744356 A 19871229
Abstract (en)
[origin: WO8900372A1] A membrane for a loudspeaker is designed so as to facilitate manufacture and to improve the tone of the loudspeaker. The membrane consists of a first plastic film (5a) which serves to retain the shape and a second plastic film (56) laminated to the first film which serves to damper partial oscillations. The membrane is particularly suitable as a conical membrane for a loudspeaker for a television receiver.
IPC 1-7
IPC 8 full level
H04R 7/02 (2006.01); H04R 7/10 (2006.01); H04R 7/12 (2006.01); H04R 7/26 (2006.01)
CPC (source: EP KR US)
H04R 7/10 (2013.01 - EP US); H04R 7/125 (2013.01 - EP US); H04R 7/26 (2013.01 - EP KR US); H04R 2307/029 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0297572 A1 19890104; EP 0297572 B1 19910502; DE 3862617 D1 19910606; EP 0366693 A1 19900509; ES 2023233 B3 19920101; GR 3002336 T3 19921230; JP H02504211 A 19901129; KR 890702402 A 19891223; US 5162619 A 19921110; WO 8900372 A1 19890112
DOCDB simple family (application)
EP 88110444 A 19880630; DE 3862617 T 19880630; EP 8800570 W 19880630; EP 88905783 A 19880630; ES 88110444 T 19880630; GR 910401039 T 19910719; JP 50570788 A 19880630; KR 890700394 A 19890303; US 44561590 A 19900103