Global Patent Index - EP 0685982 B1

EP 0685982 B1 2000-02-09 - Loudspeaker

Title (en)

Loudspeaker

Title (de)

Lautsprecher

Title (fr)

Haut-parleur

Publication

EP 0685982 B1 (DE)

Application

EP 95107544 A

Priority

DE 4419251 A

Abstract (en)

[origin: EP0685982A2] The loudspeaker (10), for providing tone signals, has a metal loudspeaker membrane (12), attached to a loudspeaker basket (11) via a metal foil rim (15). The connections between the surface of the loudspeaker basket and the rim and between the rim and the loudspeaker membrane are provided by ultrasonic welding. Pref. the metal rim is made of a Cu-Be alloy and it pref. has at least one corrugation formed in its surface, for accommodating heat expansion movement of the loudspeaker membrane relative to the loudspeaker basket. <IMAGE>

IPC 1-7 (main, further and additional classification)

H04R 9/02; H04R 7/18

IPC 8 full level (invention and additional information)

B23K 20/10 (2006.01); H04R 7/20 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)

CPC (invention and additional information)

H04R 7/20 (2013.01); H04R 9/043 (2013.01); H04R 2307/207 (2013.01)

Designated contracting state (EPC)

AT BE DE DK ES FR GB IT NL SE

EPO simple patent family

EP 0685982 A2 19951206; EP 0685982 A3 19960605; EP 0685982 B1 20000209; AT 189759 T 20000215; DE 4419251 A1 19951207; JP H0851691 A 19960220

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