BR9911841A - Speakers - Google Patents

Speakers

Info

Publication number
BR9911841A
BR9911841A BR9911841-6A BR9911841A BR9911841A BR 9911841 A BR9911841 A BR 9911841A BR 9911841 A BR9911841 A BR 9911841A BR 9911841 A BR9911841 A BR 9911841A
Authority
BR
Brazil
Prior art keywords
diaphragms
diaphragm
electro
magnet
frame
Prior art date
Application number
BR9911841-6A
Other languages
Portuguese (pt)
Inventor
Christopher Colin Lock
John Frederick Corey
Graeme Oliver Jones
Kelly Charles Waterman
Original Assignee
Slab Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Slab Technology Ltd filed Critical Slab Technology Ltd
Priority claimed from PCT/NZ1999/000088 external-priority patent/WO1999067974A1/en
Publication of BR9911841A publication Critical patent/BR9911841A/en

Links

Abstract

"ALTO-FALANTES". Um alto-falante retangular ou elíptico de painel plano tem um ou mais diafragrnas anisotrópicos 14 e 15 feitos de copolímero de polipropileno de revestimento duplo de núcleo estriado ("core flute") ou de papelão corrugado, tendo uma resistência à curvatura longitudinal maior do que a resistência à curvatura transversal. O diafragma é vibrado por um motor eletroacústico 16 que compreende um ímã 17 e uma bobina de alto-falante 18. Nesta versão o ímã 17 é montado sobre o diafragma traseiro 15 e a bobina do alto-falante 18 é montada sobre o diafragma frontal 14. Os dois diafragmas 14 e 15 são montados em suas bordas a uma armação 11 com o motor eletroacústico 16 montado no espaço encerrado pela armação e os diafragmas."LOUDSPEAKERS". A rectangular or elliptical flat panel speaker has one or more anisotropic diaphragms 14 and 15 made of double-core polypropylene copolymer ("core flute") or corrugated cardboard, having a greater resistance to longitudinal curvature than resistance to transverse curvature. The diaphragm is vibrated by an electro-acoustic motor 16 comprising a magnet 17 and a speaker coil 18. In this version the magnet 17 is mounted on the rear diaphragm 15 and the speaker coil 18 is mounted on the front diaphragm 14 The two diaphragms 14 and 15 are mounted on their edges to a frame 11 with the electro-acoustic motor 16 mounted in the space enclosed by the frame and the diaphragms.

BR9911841-6A 1998-06-22 1999-06-18 Speakers BR9911841A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33077798A 1998-06-22 1998-06-22
PCT/NZ1999/000088 WO1999067974A1 (en) 1998-06-22 1999-06-18 Loudspeakers

Publications (1)

Publication Number Publication Date
BR9911841A true BR9911841A (en) 2002-04-23

Family

ID=23291289

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9911841-6A BR9911841A (en) 1998-06-22 1999-06-18 Speakers

Country Status (1)

Country Link
BR (1) BR9911841A (en)

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Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Free format text: GEMINUS LIMITED (NZ), DUO TECH LIMITED (NZ), SEQUEL ADMINISTRATORS LIMITED (NZ), HORIZON ADMINISTRATORS LIMITED (NZ)

B25A Requested transfer of rights approved

Owner name: SLAB TECHNOLOGY LIMITED (NZ)

Free format text: TRANSFERIDO DE: GEMINUS LIMITED, DUO TECH LIMITED, SEQUEL ADMISTRATORS LIMITED E HORIZON ADMINISTRATORS LIMITED

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1911 DE 21/08/2007.