Global Patent Index - EP 0981928 A2

EP 0981928 A2 2000-03-01 - PANE-FORM LOUDSPEAKERS

Title (en)

PANE-FORM LOUDSPEAKERS

Title (de)

PLATTENFÖRMIGE LAUTSPRECHER

Title (fr)

HAUT-PARLEUR A PANNEAUX

Publication

EP 0981928 A2 (EN)

Application

EP 98921596 A

Priority

  • GB 9801362 W
  • GB 9709959 A

Abstract (en)

[origin: WO9852381A2] A panel-form loudspeaker comprises at least two resonant distributed mode acoustic panels with a single driver provided to excite all the panels such that bending wave energy is efficiently transferred to each of them to excite distributed mode resonance in them to provide acoustic output. There may be two panels one larger than the other - the larger having a lower bending wave stiffness than the smaller. The smaller panel is positioned eccentrically of the larger and the driver eccentrically of the smaller panel. A plurality of smaller panels may be associated with a single larger panel. One embodiment provides a driver mounted to the or each smaller panel which is adhesively attached face to face to the larger panel. Another embodiment provides the or each smaller panel formed within and attached to the larger panel, a driver being attached to the or each smaller panel. The attachment of the panels uses a material forming a controlling compliant coupling. A third embodiment provides the or each smaller panel mounted on one end of an associated coupler passing through and attached to the larger panel, a driver being attached to the other end of the or each coupler. The attachment of the or each coupler to the larger panel uses a material forming a controlling compliance coupling. The or each coupler is tubular in section.

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

H04R 7/06

IPC 8 full level (invention and additional information)

H04R 9/00 (2006.01); H04R 1/00 (2006.01); H04R 7/04 (2006.01); H04R 9/06 (2006.01)

CPC (invention and additional information)

H04R 7/045 (2013.01); H04R 9/06 (2013.01)

Citation (search report)

See references of WO 9852381A3

Designated contracting state (EPC)

AT BE DE DK ES FI FR GB IE IT NL PT SE

EPO simple patent family

WO 9852381 A2 19981119; WO 9852381 A3 19990218; AR 012696 A1 20001108; AU 7439098 A 19981208; AU 746673 B2 20020502; BR 9809642 A 20000711; CA 2290476 A1 19981119; CN 1255277 A 20000531; CO 4780081 A1 19990526; EP 0981928 A2 20000301; GB 9709959 D0 19970709; ID 20339 A 19981126; IL 132686 D0 20010319; JP 2002505814 A 20020219; TW 444510 B 20010701; ZA 9803986 B 19990219

INPADOC legal status


2006-12-22 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1023681

2003-06-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021203

2001-08-29 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010713

2000-05-17 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NEW TRANSDUCERS LIMITED

2000-03-01 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991130

2000-03-01 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE DE DK ES FI FR GB IE IT NL PT SE