Global patent index - EP 0995337 A1

EP 0995337 A1 2000-04-26 - ELECTROLYTIC LOUDSPEAKER ASSEMBLY

Title (en)

ELECTROLYTIC LOUDSPEAKER ASSEMBLY

Title (de)

ELEKTROLYTISCHE LAUTSPRECHERANORDNUNG

Title (fr)

ENSEMBLE HAUT-PARLEUR ELECTROLYTIQUE

Publication

EP 0995337 A1 (EN)

Application

EP 98926190 A

Priority

  • US 9811275 W
  • US 4820197 P

Abstract (en)

[origin: WO9857522A1] A compilation of improvements and modifications to U.S. patent 5,392,358 which discloses an electrolytic loudspeaker assembly (10) which reproduces a broad band of audio signals. The assembly (10) is comprised of a thin, non-magnetic capacitive transducer (12) which consists of compound diaphragm (14) that is further comprised of a center section (16), a front section (20) and a rear section (22). The compound diaphragm (14) is enclosed by a frame assembly (32). The improvements and modifications to the assembly (10) include two designs for a center section (16A, 18A); three designs each for a front section (20A, 24A, 28A) and a rear section (22A, 26A, 30A); three designs for a frame assembly (32A, 34A, 36A) and two designs for a transducer driver unit (46, 48). The basic design of the assembly (10) is also augmented by the addition of an acoustic wave diffuser, reflector, and absorbing assembly (40) and an acoustic baffle structure (44).

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

H04R 25/00

IPC 8 full level (invention and additional information)

H04R 1/34 (2006.01); H04R 19/02 (2006.01); H04R 23/00 (2006.01)

CPC (invention and additional information)

H04R 1/34 (2013.01); H04R 1/345 (2013.01); H04R 19/02 (2013.01); H04R 23/00 (2013.01)

Citation (search report)

See references of WO 9857522A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9857522 A1 19981217; AU 7808598 A 19981230; CN 1190996 C 20050223; CN 1264532 A 20000823; EP 0995337 A1 20000426; JP 2002514374 A 20020514; KR 20010013313 A 20010226

INPADOC legal status

2007-09-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040103

2000-04-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991231

2000-04-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE