Global Patent Index - EP 0749265 B1

EP 0749265 B1 2000-05-17 - High frequency loudspeaker

Title (en)

High frequency loudspeaker

Title (de)

Hochfrequenzlautsprecher

Title (fr)

Haut-parleur pour fréquences élevées

Publication

EP 0749265 B1 (FR)

Application

EP 96401270 A

Priority

FR 9507198 A

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 (main, further and additional classification)

H04R 7/18

IPC 8 full level (invention and additional information)

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 (invention and additional information)

H04R 7/18 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0749265 A1 19961218; EP 0749265 B1 20000517; AT 193174 T 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

INPADOC legal status


2016-07-29 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-05-09 [26N] NO OPPOSITION FILED

2001-03-07 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

2001-02-15 [REG CH PL] PATENT CEASED

2000-12-31 [BERE] BE: LAPSED

- Owner name: S.A. P.H.L. AUDIO

- Effective date: 20000630

2000-11-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

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2000-06-21 [REF] CORRESPONDS TO:

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2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

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2000-05-17 [REF] CORRESPONDS TO:

- Document: AT 193174 T 20000615

1999-09-01 [17Q] FIRST EXAMINATION REPORT

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1997-06-11 [17P] REQUEST FOR EXAMINATION FILED

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