EP 0749265 B1 20000517 - High frequency loudspeaker
Title (en)
High frequency loudspeaker
Title (de)
Hochfrequenzlautsprecher
Title (fr)
Haut-parleur pour fréquences élevées
Publication
Application
Priority
FR 9507198 A 19950616
Abstract (en)
[origin: EP0749265A1] The loudspeaker includes the membrane (4) which is made of a flexible elastic material, and the free ends (13,14) are connected to the fixed structure of the loudspeaker to form layers (13A,13B,14A,14B) of air of decreasing thickness towards the fixing point on one or both sides of the membrane. At least one of the annular sections has regularly spaced radial lines around the outside to increase flexibility or has radial slots around the outside, closed off by a flexible elastic resin. The membrane is manufactured in a composite material or high Young modulus polymer. The waveguide (12) is a horn and the membrane and electromagnetic coil (3) form a compression driver chamber.
IPC 1-7
IPC 8 full level
H04R 9/02 (2006.01); H04R 1/22 (2006.01); H04R 7/18 (2006.01); H04R 7/22 (2006.01); H04R 9/04 (2006.01)
CPC (source: EP US)
H04R 7/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0749265 A1 19961218; EP 0749265 B1 20000517; AT E193174 T1 20000615; CA 2178532 A1 19961217; DE 69608351 D1 20000621; DE 69608351 T2 20010104; FR 2735646 A1 19961220; FR 2735646 B1 19970822; JP H099390 A 19970110; US 5875252 A 19990223
DOCDB simple family (application)
EP 96401270 A 19960612; AT 96401270 T 19960612; CA 2178532 A 19960607; DE 69608351 T 19960612; FR 9507198 A 19950616; JP 15384696 A 19960614; US 65936196 A 19960606