Global Patent Index - EP 0997056 A1

EP 0997056 A1 2000-05-03 - LOUDSPEAKERS

Title (en)

LOUDSPEAKERS

Title (de)

LAUTSPRECHER

Title (fr)

HAUT-PARLEURS

Publication

EP 0997056 A1 (EN)

Application

EP 98932273 A

Priority

  • GB 9801765 W
  • GB 9712964 A

Abstract (en)

[origin: WO9858520A1] A tweeter has its voice coil former and diaphragm integrally formed as a single unit. The magnet, pole piece and plate are encapsulated as a complete magnetic circuit in an injection moulded casing. A robust, inexpensive and easy to manufacture product is achieved.

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

H04R 9/04; H04R 31/00

IPC 8 full level (invention and additional information)

H04R 9/04 (2006.01); H04R 31/00 (2006.01)

CPC (invention and additional information)

H04R 31/006 (2013.01); H04R 9/045 (2013.01); H04R 31/003 (2013.01)

Citation (search report)

See references of WO 9858520A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9858520 A1 19981223; EP 0997056 A1 20000503; GB 9712964 D0 19970827

INPADOC legal status


2001-08-22 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010205

2000-11-08 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000922

2000-05-03 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000119

2000-05-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT