CA2297041A1 - Loudspeakers - Google Patents
Loudspeakers Download PDFInfo
- Publication number
- CA2297041A1 CA2297041A1 CA002297041A CA2297041A CA2297041A1 CA 2297041 A1 CA2297041 A1 CA 2297041A1 CA 002297041 A CA002297041 A CA 002297041A CA 2297041 A CA2297041 A CA 2297041A CA 2297041 A1 CA2297041 A1 CA 2297041A1
- Authority
- CA
- Canada
- Prior art keywords
- radiator
- assembly according
- assembly
- acoustic
- links
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/066—Loudspeakers using the principle of inertia
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
An assembly comprising a resonant panel acoustic radiator, a body from which the acoustic radiator is suspended, at least one vibration exciter on the radiator to launch bending waves into the radiator to cause it to resonate to produce an acoustic output, and means on the body suspending the radiator for free movement relative thereto.
Description
WC 9g~j i3g7 PCT/GB98/02532 TITLE: LOUDSPEAKERS
DESCRIPTION
TECHNICAL FIELD
The in~:ention relates to loudspeakers of the kind in which an acoustic output is produced by launching bending waves into an acoustic radiator comprising a resonant panel. Such loudspeakers are described in International patent application W097/09842 of New Transducers Limited.
It is an object of the present invention to provide a modular assembly comprising a resonant panel acoustic radiator for use as a loudspeaker or as a drive unit for use in a loudspeaker.
DISCLOSURE OF INVENTION
Accordingly the present invention provides an assembly com~;rising a resonant panel acoustic radiator, a body sust~ending the acoustic radiator, at least one vibration WO 99/12387 PCTlGB98/02532 exciter on the radiator to launch bending waves into the radiator to cause i.t to resonate to produce an acoustic outpezt, and means on the body suspending the radiator for free movement relative thereto.
The body may take the place of a chassis in a conventional loudspeaker drive unit, although in the pre~~ant invention the body is usually not required to be of the same degree of weight and rigidity as is required with a conventional pistonic drive unit. The body (hereinafter chassis) may be a lightweight frame-like structure.
The chassis may be such as to enclose the radiator panEl. The chassis may be a tray-like member having a surrounding peripheral lip. The chassis may be of light weight and may, for example, be a plastics moulding. The cha:~sis may be an open frame, or may be perforate.
Means may be provided for freely suspending the edges of the acoustic radiator on the chassis. The suspension may be such as to allow free movement of the acoustic radi ator in directions norrnal to the plane of the radiator (it will usually be a flat plate) while pre~renting movement of ~i~e radiator in its plane. The suspension may comprise arms or links hinged at one end to the chassis and at the other end to the radiator for swinging movement about ress-ective parallel axes at opposite ends of the arms or links. Such arms or links may be provided on all four sides of a generally rectangular radiator. The suspension zrm~ or links on opposite sides of the radiator may be attached near to diagonally opposed corners of the WO 99/1138'7 PCT/GB98/02532 radiator. The connections of the arms or links to the radiator may be by means of resilient foam pads, e.g. of rub~nr or a rubber-like material, which are fixed to the radiator, e.g. by means of an adhesive, near to its corners arid which receive hinge pins provided on the ends of the arms or links.
The chassis may be formed with a conduit in which services such as electrical input leads to the vibration excicer(s) may be located. The conduit may be in the form of a channel extending round the periphery of the chassis .
The chassis may be formed with means whereby it can be supported in position to form a loudspeaker or such that more than one of the assemblies can be linked together to forn a larger loudspeaker unit. Thus the corners of the rhacsis may be formed with bores for receiving linking members comprising respective pegs which are fractionally received in the bores to hold two or more of the assemblies together edge-to-edge to form a large loudspeaker panel.
A linking member comprising two pegs may be used to join two adjacent modular assemblies, and a linking member ~~omy~~ising four peas may join the corners of four adjacent modular assemblies.
The linking member may establish an electrical link between adjacent modular assemblies as well as providing the mechanical linkage. To provide an electrical con::section, the pegs of each linking member may comprise outer and inner connectors and means electrically conr_ecting the outer and inner connectors of one peg to the W~ 99/? 2387 PCT/GB98/02532 outer and inner connectors of the other pegs of the linking member. To establish a serial electrical connection betr~een the modular assemblies, the inner connector of one peg may be electrically connected to the outer connector of ano~~her peg of the linking member. For a parallel con~zection, the inner conductors of the pegs of the linking member may be electrically connected and the outer conuuctors of the pegs may be electrically connected.
The electrical signal may be carried between the modular assemblies by making two surfaces of the chassis or fraane moulding electrically conductive. This may be achieved by embedding or otherwise applying electrical conductors in the channel, for example by printing, e.g, in the upper and lower surfaces of the peripheral lip of the I5 cha.ss~_s. A parallel pair of conductors may be provided.
Each conductor is preferably co-extensive with the sur~oundina peripheral lip of the chassis and may have a con:zector pad provided at each of its i:our corners . The ccn.,:e~tor pads are preferably received .n ~~he said bores at eac'~ corner of the chassis and which receive the linking T.~.er-.:~e::~s. A~.ternatively, two surfaces of the frame moulding aan be made conductive during the moulding process, e.g. by advanced injection moulding techniques. In either case the cen~iuctive surfaces of the frame mou7_ding may provide a bus.;a r for electrical connectivity between each of the following pairs, namely adjacent resonant panel acoustic racaiators, exciter(s) and frame, and each two resonant pan:! acoustic radiator assembly to the outside world.
The resonant panel acoustic radiator may comprise a member having capability to sustain and propagate input v-ib~ational energy by bending waves in a least one operative area extending transversely of thickness to have 5 resc.~nant mode vibration components distributed over said at least one area and have predetermined preferential locations or sites within said area for vibration exciter means and having an exciter mounted on said member at one of said locations or sites to vibrate the member to cause is ~:o resonate farming an acoustic radiator which provides an .coustic output when resonating.
'~'he or each vibration exciter ma~,r be of the kind described in our International patent application W093.31188, which describes a vibration exciter which can he 1=reely or resiliently suspended on a support, e.g. the body or chassis of the present invention.
BRIEF DESCRIPTION OF DRAWINGS
i:~e invention is c~iagrammatica115T illustrated, by way of example, in the accompanying drawings, in which:-Figure 1 is a perspective cross-sectional view of a ~o:x_.=va.r loudspeaker_ drive unit;
Figure 2 is an exploded perspective view of the moc:-zlar assembly of Figure 1;
,:vgure 3 is a perspective view showing the interior f.acz of a basket or chassis for the modular assembly of Fig',~.re 1, and Figure 4 is a perspective view of a resonant acoustic :~ac~ ~_at:o~ panel for the modular assembly of Figure 1;
WO 99/1'.;:387 PCT/GB98/02532 Figure 5 is a perspective view of two interconnected modular assemblies;
Figure 6 is a perspective view of four interconnected modular assemblies;
Figure 7 is an enlarged scrap perspective view of a linking member interconnecting two modular assemblies;
~'i.gures 8 is an enlarged scrap perspective view of a 1=~n:.-_ing member and a corner of one modular assembly;
Figure 9 is an enlarged scrap perspective view of a :Lin.~~~.ng member interconnecting four modular assemblies;
~?igure 10 is an enlarged scrap perspective view of a l~.nl~irg member and the corners of two modular assemblies;
~~igure lla,llb,llc are respective perspective views of p~.r_:~~llel and serial linking members;
Figure 12 is an exploded perspective view of the mad°m ar assembly of Figure 1 with the addition of a pair of bus's>a~~ s ;
:.:.~igure 13 is a perspective view of a connector pad, and Figure 14 is a parties'. crass-section through a pair of ;;~c.u7.ar assemblies and a linking member connecting them toget?zer .
BEST MODES FOR CARRYING OUT THE INVENTION
Figures 1 to 4 illustrate a flat generally rectangular m~oawla~_ 1 oudspeaker drive unit assembly (1.) comprising a general~.~y rectangular ;tiff lightweight resonant acoustic radv~tor panel (2), e.g. of the kind described in Incer~ational patent application w097/09842 mounted in a ~rQ, c~g/r s,~~; PCT/GB98/02532 surrounding generally rectangular body in the form of a chassis or basket (3) with a pair of vibration exciters (4) mountEd on the panel (2) to launch bending waves into the par_el (2) to cause it to resonate to provide an acoustic output.
The chassis (3) encloses the radiator panel (2) and is forr~;ec~ with a surrounding outwardly facing conduit (14) defined between outwardly projecting flanges (11) in which serTrices such as electrical input leads to the vibration exciters (4) can be located. The conduit (14) is thus in ttve l:orm of a charnel extending round the periphery of the chassis (3).
Figures 1 and 2 also illustrate a means (7) for freely suspending the acoustic radiator (2) on the chassis (3) by = t s e~~c es . The suspension ( 7 ) comprises arms or l inks ( 8 ) hinrec? at one end to the chassis (3) and at the other end to '_he radiator (2) for swinging movemera about respective paral~.el axes at opposite ends of the arms or links (8).
The connections of the arms or links (8) to the radiator (2) i~ by weans of resilient foam pads (10) each formed ia-_ ;:~:. a k~ore ( 2 6 ) , whi ch receive hinge pins ( 9 ) provided on one Fnd of each of the arms or links (8). The other end of each ,arm or link (8) is formed with a cyn_indrical boss (24) recW~,red in a corresponding aperture (2.9) on the chassis (3i. The suspension (i) is such as to ~xllow free movement of tY~e acoustic radiator (2) in directions normal to the pla-~e ~~~:~ile preventing mozrement of the radiator (2) in its p.'_:zr .~::
WG ~9~'t=:"87 PCT/GB98/02532 ~s shown in Figure 2, a pair of inertial electro-dynamic vibration exciters (4) are coupled to the radiator (2) ro launch bending wave vibration into the radiator. The exc~i~.~~s (4) are suspended on the chassis (3) such that thei.r_, motion normal to the plane of the radiator (2) is unimpeded and to prevent movement of tr~e exciters in the plane of the radiator (2) whereby centring of the rels~.~~vely movable parts of the exciters is ensured. This excit.e-r suspension is the subject of International patent aprJi.ication W098/31188.
'This suspension resFmbles, at least in function, the spiaer commonly found in the drive units of conventional pistonic loudspeakers, and is in the form of a disc-like plate (5) having an inner portion attached to the exciter arvd =r~ outer portion attached to the chassis, the inner and outer portions being separated such that the one can move nor~ma!ly with respect to the other anti so that relative movement in the plane of the disc-like plate is prevented.
Tha_s is achieved by forming the disc (5) with c~_~_rc:smferenti.al and radial slits (30,32) respectively to f:.-,y~., _. pair of curved =_imbs (33) the free ends (31) of wh.w',z ~Le cttached to the chassis. Fcr this purpose the chassis (3) is formed with a plate-lik.~ exciter locating port ion (23) formed with. opposed apertures (25) ~,ahich align 2 5 vas. '=h ar_d surr ound the r. espect ive excit ers ~ 4 ) and to which porti~;,n (23 ) , the free ends (31) of the limb s (33 ) are at v.::zcired. A. heat sink (6) is attached to each exciter over the top oz the plate (5); to assist in cooling the exciters WG 9'3/:::3:';7 ~CT/GB98/02532 during use.
rigure 3 shows the interior face of the basket or cr_as~s.is (3) . The chassis (3) is a tray-like member cc~rryJr~sing a perforate plate-like member (34) having an un~~Wan3ing rim (=~5) which carries the surrounding pair of outwardly extending flanges (11) which define the conduit (~.4). The chassis (3) is lightweight and may, for example, be a plastics moulding.
,:figure 4 illustrates the positions of the resilient to~:n pads (10) on the acoustic radiator (2). The foam pads com~;rise bores (26) to receive hinge pins (9} provided on tre ends of the arms or links (8) of the means (7) for su::bending the edges of the acoustic radiaLOr (2) on the cr~assis (3) . The foam pads (10) are positioned on all four «o<~:~ of the radiator (2) and the foam pads (10) on cpposite sides of the radiator (2) are attached near to do_a~~cnally Qpposed corners of the radiator (2). The nes il:_ent foam pods ( 10 ) which may be ef rubber or a rub;~E_-like materv_al, az-e fixed. to tr.e radiatcr (2) , e.g.
b~r z~~=;ans of an adhesive .
Figures 5 and 6 illustrate respectively the :.nt er_~~onnection of the chassis (3) of t-.wo and four of the ;ro~.~a.:Lar assemblies (1) of Figures 1 to 4. To this end the _.~:rnErs of the rhassi~ are formad with bores (15) for r-.diving 1~_nkinc members (16,18) comprising respective peas ( 17 } Y~rhi.ch are f rz.ct Tonally rece ~.ve~3 i.n the bores ( 15 ) co :!~c~ld the two assemblies together edge-to-ed<~e to form a ~la.:~ye _l.ou3speaker panel. The linking member (16) comprises WG 991Yr3~t~7 ~GT/GB98/02532 two parallel pegs and is used to hold two modular asvemhlie~ (1) together. The linking member (18) comprises fo~.w raral~..el pegs arranged in a square formation. A
c~~r~bima ~ ion of the 7_ inking membErs m.ay be used ( 7. ~ , 18 ) to 5 hole; ':our assemblies together.
H'i gure 7 illustrates the detail of the linking member (15i of Figure 5 which comprises two parallel pegs (17~ ~'~7) interconnected by a web or arm (27). The two pe:~.~~ (17',17") are trictionally received in the bores 10( ~1_ ~~ ' , 15" ) to intercannect two modularl ies ( 1 ) assemb of the kind shown in Figures 1 to 4.
Figures 8 to 10 illustrate the detail of the linking me:nr_~e_ (18) of Figure 6. As can best be seen in Figure 8, t:he lin)ting member (18) comprises four pegs (17) 15: P~ :~rw~onnected by a cruciform: web (28; Tr~~ web (28) .
ccmpr~ses a generally rectangular central body (38) and four: arms (39) which extend from the four corners of the re~ta~~g,-~~.ar body (38) . Each peg (1'7 i is f.rictionally r~~~i_zYe-~ ;_n a bore= (15) at the corner chassis (3) of th~ of 20G ~;-:>c:u:l ~r assembl,r ;1) of Figures 1 tc 4 .
,Figure 9 illu.strat:es h.ow faur nm~dL,lar assemblies (1) a ~~a i. ~:.t.erconnectec~ by a linking memberwhich has each ; l8 ) of its pegs (17) frictional:ly received ire bores (15) at the ~.:_rwer_ s of th.e modular assemblies (._ ) .
25L figure i0 i:'~l,.astrates the detai is the bores (15) of ~,~~.-. rn zrict.ionally receive ~.he pegs The bores (15) ( i7 ~ .
are qwr~eral:!y r_yLinc.rical with a reG""t~~:'lgl).~.ar groove (40) to re.=::ire the arm (~9) of the web (28) which interconnects ~rC,~~~,~i~-~ j~;7 PCT/GB98/02532 the p=:g~ ( 17 ) .
t~igures 11a,11b and llc are perspective views of serle~and paralle'y ccnnected linking member (16), which ~.r ~. wsecz to es~ax;li_sh an electrical link between adjacent acoustic radiators. As can be seen ~~I1 Figure 11c, the ~n..i=~_g member ( 16 ) comprises two pegs ( 17 ' , 17 " ) each of which comprise an outer electrical connector (20), and an innEr electrical connector (19) arranged in a co-axial c~~~fiquration.
~:n Figure 11a, a serial electrical. connection between tr~e assemblies (1) (not shown) ~:~ established by elec_~trically connecting via conductor w~_.res (21) , the inner corme~tors (19,19') of each peg (1'7',7") to the outer con~-.e~:tc>rs (20, 20' ) of the other peg (1n' , l_7") . In Figure l~.k-, ~ parallel connection is established by electrically cer.r~ec_ti:~g via conductor wires (2.1) 'he inner conductors (1.a.1:~'; of each peg (17',17") and by electrically ccnne-~t=_ng via conducte-r wires (21) the outer conductors (20, 2 ~i' ) of each peg (17' , 17" ) .
ig;zre a.2 il ;.ustra.tes tre mc;dular a.r>cembly (1) , with ~~~p :sec. pa~=_r of conductor ra_Lls cr busbars (12, 13) , -~7;~.~.:,:~ ~.re ,~~;~unt.e~.3 on or located .n c> >mbedded in the ;'rw ;r ~ :l3 ;, to surround the chassis . One conductor ( 12 ) may ~e pc-sit: rely charged and the other conductor (13) may ~e negatively polarised. to carry the lectrical signal b~t;~ecrs adjacent assemblies (1). The conductors (12,13) a~_w ~o-ext ~_ nsive with the per .iphera l l ip ( 11 ) of the c~,.ass i s ( 3 anC have connector pads ( 22 ) at each corner and WO 9~/~'?3t;7 PCT/GB98/02532 wh:icr pads are arranged to fit into the bores (15) at each corr.~ei: ef the chassis ( 3 ) , for el~~ctri cal. contact with the liml-;irk members illustrated in FigurFe: lla,lLb and llc a~<.w:~-fiigure 13 illustrates the detail of a connector pad (2~) ~~t the corner of a conductor (12). The connector pad (2z) ~~omprises a ~~ircular rind {36) an~~l a link {37), attGc:!~aing the ring (36) !.o the conriectcr pace. (22) .
i.s shown in Figure 14, the ~~usbars 612,13) are e__f:~a:_ic:ally connected to the elec~~rical connect~_ons of the lin~in~ members (16,18) by means of screws (41) which engage thz~eaded inserts (42) in the linkir_g members to hold the linking members in the bores (15i in the assemblies (1~. Trle screws (41) thus ensure noth. the mechanical co:an~~t:ion of Lhe assemblies ~1) and the electrical ccn~.ileetioizs between the assemblies .
INDUSTRIAL APPLICABILITY
'e"hn invention thus wrovides e. ~,imple manner of ad~.~~t_.nc resonant, panel acoustic radiators for mass p.r~~uicn and fog- electrically r.or..-~ecting interlinked ac ~;a :> ~.. ~ c radiators .
DESCRIPTION
TECHNICAL FIELD
The in~:ention relates to loudspeakers of the kind in which an acoustic output is produced by launching bending waves into an acoustic radiator comprising a resonant panel. Such loudspeakers are described in International patent application W097/09842 of New Transducers Limited.
It is an object of the present invention to provide a modular assembly comprising a resonant panel acoustic radiator for use as a loudspeaker or as a drive unit for use in a loudspeaker.
DISCLOSURE OF INVENTION
Accordingly the present invention provides an assembly com~;rising a resonant panel acoustic radiator, a body sust~ending the acoustic radiator, at least one vibration WO 99/12387 PCTlGB98/02532 exciter on the radiator to launch bending waves into the radiator to cause i.t to resonate to produce an acoustic outpezt, and means on the body suspending the radiator for free movement relative thereto.
The body may take the place of a chassis in a conventional loudspeaker drive unit, although in the pre~~ant invention the body is usually not required to be of the same degree of weight and rigidity as is required with a conventional pistonic drive unit. The body (hereinafter chassis) may be a lightweight frame-like structure.
The chassis may be such as to enclose the radiator panEl. The chassis may be a tray-like member having a surrounding peripheral lip. The chassis may be of light weight and may, for example, be a plastics moulding. The cha:~sis may be an open frame, or may be perforate.
Means may be provided for freely suspending the edges of the acoustic radiator on the chassis. The suspension may be such as to allow free movement of the acoustic radi ator in directions norrnal to the plane of the radiator (it will usually be a flat plate) while pre~renting movement of ~i~e radiator in its plane. The suspension may comprise arms or links hinged at one end to the chassis and at the other end to the radiator for swinging movement about ress-ective parallel axes at opposite ends of the arms or links. Such arms or links may be provided on all four sides of a generally rectangular radiator. The suspension zrm~ or links on opposite sides of the radiator may be attached near to diagonally opposed corners of the WO 99/1138'7 PCT/GB98/02532 radiator. The connections of the arms or links to the radiator may be by means of resilient foam pads, e.g. of rub~nr or a rubber-like material, which are fixed to the radiator, e.g. by means of an adhesive, near to its corners arid which receive hinge pins provided on the ends of the arms or links.
The chassis may be formed with a conduit in which services such as electrical input leads to the vibration excicer(s) may be located. The conduit may be in the form of a channel extending round the periphery of the chassis .
The chassis may be formed with means whereby it can be supported in position to form a loudspeaker or such that more than one of the assemblies can be linked together to forn a larger loudspeaker unit. Thus the corners of the rhacsis may be formed with bores for receiving linking members comprising respective pegs which are fractionally received in the bores to hold two or more of the assemblies together edge-to-edge to form a large loudspeaker panel.
A linking member comprising two pegs may be used to join two adjacent modular assemblies, and a linking member ~~omy~~ising four peas may join the corners of four adjacent modular assemblies.
The linking member may establish an electrical link between adjacent modular assemblies as well as providing the mechanical linkage. To provide an electrical con::section, the pegs of each linking member may comprise outer and inner connectors and means electrically conr_ecting the outer and inner connectors of one peg to the W~ 99/? 2387 PCT/GB98/02532 outer and inner connectors of the other pegs of the linking member. To establish a serial electrical connection betr~een the modular assemblies, the inner connector of one peg may be electrically connected to the outer connector of ano~~her peg of the linking member. For a parallel con~zection, the inner conductors of the pegs of the linking member may be electrically connected and the outer conuuctors of the pegs may be electrically connected.
The electrical signal may be carried between the modular assemblies by making two surfaces of the chassis or fraane moulding electrically conductive. This may be achieved by embedding or otherwise applying electrical conductors in the channel, for example by printing, e.g, in the upper and lower surfaces of the peripheral lip of the I5 cha.ss~_s. A parallel pair of conductors may be provided.
Each conductor is preferably co-extensive with the sur~oundina peripheral lip of the chassis and may have a con:zector pad provided at each of its i:our corners . The ccn.,:e~tor pads are preferably received .n ~~he said bores at eac'~ corner of the chassis and which receive the linking T.~.er-.:~e::~s. A~.ternatively, two surfaces of the frame moulding aan be made conductive during the moulding process, e.g. by advanced injection moulding techniques. In either case the cen~iuctive surfaces of the frame mou7_ding may provide a bus.;a r for electrical connectivity between each of the following pairs, namely adjacent resonant panel acoustic racaiators, exciter(s) and frame, and each two resonant pan:! acoustic radiator assembly to the outside world.
The resonant panel acoustic radiator may comprise a member having capability to sustain and propagate input v-ib~ational energy by bending waves in a least one operative area extending transversely of thickness to have 5 resc.~nant mode vibration components distributed over said at least one area and have predetermined preferential locations or sites within said area for vibration exciter means and having an exciter mounted on said member at one of said locations or sites to vibrate the member to cause is ~:o resonate farming an acoustic radiator which provides an .coustic output when resonating.
'~'he or each vibration exciter ma~,r be of the kind described in our International patent application W093.31188, which describes a vibration exciter which can he 1=reely or resiliently suspended on a support, e.g. the body or chassis of the present invention.
BRIEF DESCRIPTION OF DRAWINGS
i:~e invention is c~iagrammatica115T illustrated, by way of example, in the accompanying drawings, in which:-Figure 1 is a perspective cross-sectional view of a ~o:x_.=va.r loudspeaker_ drive unit;
Figure 2 is an exploded perspective view of the moc:-zlar assembly of Figure 1;
,:vgure 3 is a perspective view showing the interior f.acz of a basket or chassis for the modular assembly of Fig',~.re 1, and Figure 4 is a perspective view of a resonant acoustic :~ac~ ~_at:o~ panel for the modular assembly of Figure 1;
WO 99/1'.;:387 PCT/GB98/02532 Figure 5 is a perspective view of two interconnected modular assemblies;
Figure 6 is a perspective view of four interconnected modular assemblies;
Figure 7 is an enlarged scrap perspective view of a linking member interconnecting two modular assemblies;
~'i.gures 8 is an enlarged scrap perspective view of a 1=~n:.-_ing member and a corner of one modular assembly;
Figure 9 is an enlarged scrap perspective view of a :Lin.~~~.ng member interconnecting four modular assemblies;
~?igure 10 is an enlarged scrap perspective view of a l~.nl~irg member and the corners of two modular assemblies;
~~igure lla,llb,llc are respective perspective views of p~.r_:~~llel and serial linking members;
Figure 12 is an exploded perspective view of the mad°m ar assembly of Figure 1 with the addition of a pair of bus's>a~~ s ;
:.:.~igure 13 is a perspective view of a connector pad, and Figure 14 is a parties'. crass-section through a pair of ;;~c.u7.ar assemblies and a linking member connecting them toget?zer .
BEST MODES FOR CARRYING OUT THE INVENTION
Figures 1 to 4 illustrate a flat generally rectangular m~oawla~_ 1 oudspeaker drive unit assembly (1.) comprising a general~.~y rectangular ;tiff lightweight resonant acoustic radv~tor panel (2), e.g. of the kind described in Incer~ational patent application w097/09842 mounted in a ~rQ, c~g/r s,~~; PCT/GB98/02532 surrounding generally rectangular body in the form of a chassis or basket (3) with a pair of vibration exciters (4) mountEd on the panel (2) to launch bending waves into the par_el (2) to cause it to resonate to provide an acoustic output.
The chassis (3) encloses the radiator panel (2) and is forr~;ec~ with a surrounding outwardly facing conduit (14) defined between outwardly projecting flanges (11) in which serTrices such as electrical input leads to the vibration exciters (4) can be located. The conduit (14) is thus in ttve l:orm of a charnel extending round the periphery of the chassis (3).
Figures 1 and 2 also illustrate a means (7) for freely suspending the acoustic radiator (2) on the chassis (3) by = t s e~~c es . The suspension ( 7 ) comprises arms or l inks ( 8 ) hinrec? at one end to the chassis (3) and at the other end to '_he radiator (2) for swinging movemera about respective paral~.el axes at opposite ends of the arms or links (8).
The connections of the arms or links (8) to the radiator (2) i~ by weans of resilient foam pads (10) each formed ia-_ ;:~:. a k~ore ( 2 6 ) , whi ch receive hinge pins ( 9 ) provided on one Fnd of each of the arms or links (8). The other end of each ,arm or link (8) is formed with a cyn_indrical boss (24) recW~,red in a corresponding aperture (2.9) on the chassis (3i. The suspension (i) is such as to ~xllow free movement of tY~e acoustic radiator (2) in directions normal to the pla-~e ~~~:~ile preventing mozrement of the radiator (2) in its p.'_:zr .~::
WG ~9~'t=:"87 PCT/GB98/02532 ~s shown in Figure 2, a pair of inertial electro-dynamic vibration exciters (4) are coupled to the radiator (2) ro launch bending wave vibration into the radiator. The exc~i~.~~s (4) are suspended on the chassis (3) such that thei.r_, motion normal to the plane of the radiator (2) is unimpeded and to prevent movement of tr~e exciters in the plane of the radiator (2) whereby centring of the rels~.~~vely movable parts of the exciters is ensured. This excit.e-r suspension is the subject of International patent aprJi.ication W098/31188.
'This suspension resFmbles, at least in function, the spiaer commonly found in the drive units of conventional pistonic loudspeakers, and is in the form of a disc-like plate (5) having an inner portion attached to the exciter arvd =r~ outer portion attached to the chassis, the inner and outer portions being separated such that the one can move nor~ma!ly with respect to the other anti so that relative movement in the plane of the disc-like plate is prevented.
Tha_s is achieved by forming the disc (5) with c~_~_rc:smferenti.al and radial slits (30,32) respectively to f:.-,y~., _. pair of curved =_imbs (33) the free ends (31) of wh.w',z ~Le cttached to the chassis. Fcr this purpose the chassis (3) is formed with a plate-lik.~ exciter locating port ion (23) formed with. opposed apertures (25) ~,ahich align 2 5 vas. '=h ar_d surr ound the r. espect ive excit ers ~ 4 ) and to which porti~;,n (23 ) , the free ends (31) of the limb s (33 ) are at v.::zcired. A. heat sink (6) is attached to each exciter over the top oz the plate (5); to assist in cooling the exciters WG 9'3/:::3:';7 ~CT/GB98/02532 during use.
rigure 3 shows the interior face of the basket or cr_as~s.is (3) . The chassis (3) is a tray-like member cc~rryJr~sing a perforate plate-like member (34) having an un~~Wan3ing rim (=~5) which carries the surrounding pair of outwardly extending flanges (11) which define the conduit (~.4). The chassis (3) is lightweight and may, for example, be a plastics moulding.
,:figure 4 illustrates the positions of the resilient to~:n pads (10) on the acoustic radiator (2). The foam pads com~;rise bores (26) to receive hinge pins (9} provided on tre ends of the arms or links (8) of the means (7) for su::bending the edges of the acoustic radiaLOr (2) on the cr~assis (3) . The foam pads (10) are positioned on all four «o<~:~ of the radiator (2) and the foam pads (10) on cpposite sides of the radiator (2) are attached near to do_a~~cnally Qpposed corners of the radiator (2). The nes il:_ent foam pods ( 10 ) which may be ef rubber or a rub;~E_-like materv_al, az-e fixed. to tr.e radiatcr (2) , e.g.
b~r z~~=;ans of an adhesive .
Figures 5 and 6 illustrate respectively the :.nt er_~~onnection of the chassis (3) of t-.wo and four of the ;ro~.~a.:Lar assemblies (1) of Figures 1 to 4. To this end the _.~:rnErs of the rhassi~ are formad with bores (15) for r-.diving 1~_nkinc members (16,18) comprising respective peas ( 17 } Y~rhi.ch are f rz.ct Tonally rece ~.ve~3 i.n the bores ( 15 ) co :!~c~ld the two assemblies together edge-to-ed<~e to form a ~la.:~ye _l.ou3speaker panel. The linking member (16) comprises WG 991Yr3~t~7 ~GT/GB98/02532 two parallel pegs and is used to hold two modular asvemhlie~ (1) together. The linking member (18) comprises fo~.w raral~..el pegs arranged in a square formation. A
c~~r~bima ~ ion of the 7_ inking membErs m.ay be used ( 7. ~ , 18 ) to 5 hole; ':our assemblies together.
H'i gure 7 illustrates the detail of the linking member (15i of Figure 5 which comprises two parallel pegs (17~ ~'~7) interconnected by a web or arm (27). The two pe:~.~~ (17',17") are trictionally received in the bores 10( ~1_ ~~ ' , 15" ) to intercannect two modularl ies ( 1 ) assemb of the kind shown in Figures 1 to 4.
Figures 8 to 10 illustrate the detail of the linking me:nr_~e_ (18) of Figure 6. As can best be seen in Figure 8, t:he lin)ting member (18) comprises four pegs (17) 15: P~ :~rw~onnected by a cruciform: web (28; Tr~~ web (28) .
ccmpr~ses a generally rectangular central body (38) and four: arms (39) which extend from the four corners of the re~ta~~g,-~~.ar body (38) . Each peg (1'7 i is f.rictionally r~~~i_zYe-~ ;_n a bore= (15) at the corner chassis (3) of th~ of 20G ~;-:>c:u:l ~r assembl,r ;1) of Figures 1 tc 4 .
,Figure 9 illu.strat:es h.ow faur nm~dL,lar assemblies (1) a ~~a i. ~:.t.erconnectec~ by a linking memberwhich has each ; l8 ) of its pegs (17) frictional:ly received ire bores (15) at the ~.:_rwer_ s of th.e modular assemblies (._ ) .
25L figure i0 i:'~l,.astrates the detai is the bores (15) of ~,~~.-. rn zrict.ionally receive ~.he pegs The bores (15) ( i7 ~ .
are qwr~eral:!y r_yLinc.rical with a reG""t~~:'lgl).~.ar groove (40) to re.=::ire the arm (~9) of the web (28) which interconnects ~rC,~~~,~i~-~ j~;7 PCT/GB98/02532 the p=:g~ ( 17 ) .
t~igures 11a,11b and llc are perspective views of serle~and paralle'y ccnnected linking member (16), which ~.r ~. wsecz to es~ax;li_sh an electrical link between adjacent acoustic radiators. As can be seen ~~I1 Figure 11c, the ~n..i=~_g member ( 16 ) comprises two pegs ( 17 ' , 17 " ) each of which comprise an outer electrical connector (20), and an innEr electrical connector (19) arranged in a co-axial c~~~fiquration.
~:n Figure 11a, a serial electrical. connection between tr~e assemblies (1) (not shown) ~:~ established by elec_~trically connecting via conductor w~_.res (21) , the inner corme~tors (19,19') of each peg (1'7',7") to the outer con~-.e~:tc>rs (20, 20' ) of the other peg (1n' , l_7") . In Figure l~.k-, ~ parallel connection is established by electrically cer.r~ec_ti:~g via conductor wires (2.1) 'he inner conductors (1.a.1:~'; of each peg (17',17") and by electrically ccnne-~t=_ng via conducte-r wires (21) the outer conductors (20, 2 ~i' ) of each peg (17' , 17" ) .
ig;zre a.2 il ;.ustra.tes tre mc;dular a.r>cembly (1) , with ~~~p :sec. pa~=_r of conductor ra_Lls cr busbars (12, 13) , -~7;~.~.:,:~ ~.re ,~~;~unt.e~.3 on or located .n c> >mbedded in the ;'rw ;r ~ :l3 ;, to surround the chassis . One conductor ( 12 ) may ~e pc-sit: rely charged and the other conductor (13) may ~e negatively polarised. to carry the lectrical signal b~t;~ecrs adjacent assemblies (1). The conductors (12,13) a~_w ~o-ext ~_ nsive with the per .iphera l l ip ( 11 ) of the c~,.ass i s ( 3 anC have connector pads ( 22 ) at each corner and WO 9~/~'?3t;7 PCT/GB98/02532 wh:icr pads are arranged to fit into the bores (15) at each corr.~ei: ef the chassis ( 3 ) , for el~~ctri cal. contact with the liml-;irk members illustrated in FigurFe: lla,lLb and llc a~<.w:~-fiigure 13 illustrates the detail of a connector pad (2~) ~~t the corner of a conductor (12). The connector pad (2z) ~~omprises a ~~ircular rind {36) an~~l a link {37), attGc:!~aing the ring (36) !.o the conriectcr pace. (22) .
i.s shown in Figure 14, the ~~usbars 612,13) are e__f:~a:_ic:ally connected to the elec~~rical connect~_ons of the lin~in~ members (16,18) by means of screws (41) which engage thz~eaded inserts (42) in the linkir_g members to hold the linking members in the bores (15i in the assemblies (1~. Trle screws (41) thus ensure noth. the mechanical co:an~~t:ion of Lhe assemblies ~1) and the electrical ccn~.ileetioizs between the assemblies .
INDUSTRIAL APPLICABILITY
'e"hn invention thus wrovides e. ~,imple manner of ad~.~~t_.nc resonant, panel acoustic radiators for mass p.r~~uicn and fog- electrically r.or..-~ecting interlinked ac ~;a :> ~.. ~ c radiators .
Claims (25)
1. An assembly (1) comprising a resonant panel acoustic radiator (2), a body (3) from which the acoustic radiator (2) is suspended, at least one vibration exciter (4) on the radiator (2) to launch bending waves into the radiator (2) to cause it to resonate to produce an acoustic output, characterised in that the body is formed with means whereby the assembly can be linked to another such assembly.
2. An assembly (1) according to claim 1 wherein the body (3) has corners formed with bores (15), and linking members (16,18) are provided comprising respective pegs (17) which are adapted to be received in the bores (15) to hold a plurality of the assemblies (1) together edge-to-edge.
3. An assembly (1) according to claim 2, wherein the linking members (16,18) are adapted to establish an electrical link between adjacent assemblies (1).
4. An assembly according to claim 3, characterised in that each linking member (16,18) comprises two or more pegs (17) each of which comprises connector pairs (19,20) and means for electrically connecting the connector pairs (19,20) of one peg (17) to the connector pairs of the other pegs (17).
5. An assembly according to claim 4, characterised in that the connector pairs (19,20) are concentric.
6. An assembly according to claim 5, characterised in that a serial electrical connection between the acoustic radiators (1) is established by electrically connecting the inner connectors (19) of each peg to the outer connectors (20) of the other pegs.
7. An assembly according to claim 5, characterised in that a parallel electrical connection is established by electrically connecting the inner conductors (19) of each peg (17) together and by electrically connecting the outer conductors (20) of each peg (17) together.
8. An assembly according to any one of claims 3 to 7, characterised in that electrical signals are carried between assemblies by conductive members (12,13) on the respective bodies.
9. An assembly according to claim 8, characterised in that the body (3) is moulded and in that surfaces of the body are rendered electrically conductive during moulding.
10. An assembly according to claim 8, characterised in that electrical conductors (12,13) are embedded in the upper and lower surfaces of the peripheral lip of the body (3).
11. An assembly according to claim 9, characterised by conductors (12,13) of opposite polarity.
12. An assembly according to claim 10 or claim 11, characterised in that each conductor (12,13) is the same shape as the surrounding peripheral lip (11) of the body (3).
13. An assembly according to any one of claims 10 to 12, characterised in that each conductor (12,13) has a connector pad (22) at each corner.
14. An assembly according to claim 13, characterised in that the connector pads (22) are adapted to be received by the bores (15) at each corner of the body (3).
15. An assembly (1) comprising a resonant panel acoustic radiator (2), a body (3) from which the acoustic radiator (2) is suspended, at least one vibration exciter (4) on the radiator (2) to launch bending waves into the radiator (2) to cause it to resonate to produce an acoustic output, characterised by links (8) hinged at one end to the body (3) and at the other end to the radiator (2) for swinging movement about respective parallel axes at opposite ends of the links (8) forming a suspension for coupling the edges of the acoustic radiator (2) to the body (3) for free movement relative thereto.
16. An assembly according to any preceding claim, characterised in that the body (3) encloses the radiator (2).
17. An assembly according to claim 16, characterised in that the body (3) is a tray-like member having a surrounding peripheral lip (11).
18. An assembly according to claim 17, characterised in that the tray-like member (3) is perforate.
19. An assembly according to claim 15, characterised in that the radiator (2) is generally rectangular and in that the suspension links (8) are provided on all four edges of the radiator (2).
20. An assembly according to claim 19, characterised in that the suspension links (8) on opposite edges of the radiator (2) are attached near to diagonally opposed corners of the radiator (2).
21. An assembly according to any one of claims 18 to 20, characterised in that the connection of the links (8) to the radiator (2) is by means of resilient pads (10) which are fixed to the radiator (2) near to its corners and which receive hinge pins (9) provided on the links (8).
22. An assembly according to any preceding claim, characterised in that the body (3) is formed with a conduit (14) in which electrical services are located.
23. An assembly according to claim 22, characterised in that the conduit (14) is in the form of a channel extending round the periphery of the body (3).
24. An assembly according to any preceding claim, characterised by means (5) suspending the vibration exciter (4) on the body (3) for free movement relative thereto.
25. A loudspeaker characterised by an assembly (1) as claimed in any preceding claim.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9718730.6A GB9718730D0 (en) | 1997-09-04 | 1997-09-04 | Loudspeakers |
| GB9718730.6 | 1997-09-04 | ||
| GBGB9727193.6A GB9727193D0 (en) | 1997-12-23 | 1997-12-23 | Loudspeakers |
| GB9727193.6 | 1997-12-23 | ||
| PCT/GB1998/002532 WO1999012387A1 (en) | 1997-09-04 | 1998-08-24 | Loudspeakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2297041A1 true CA2297041A1 (en) | 1999-03-11 |
Family
ID=26312175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002297041A Abandoned CA2297041A1 (en) | 1997-09-04 | 1998-08-24 | Loudspeakers |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1010351A1 (en) |
| JP (1) | JP2001515333A (en) |
| KR (1) | KR20010023648A (en) |
| CN (1) | CN1269958A (en) |
| AR (1) | AR013954A1 (en) |
| AU (1) | AU745486B2 (en) |
| BR (1) | BR9812163A (en) |
| CA (1) | CA2297041A1 (en) |
| IL (1) | IL134834A0 (en) |
| TW (1) | TW410525B (en) |
| WO (1) | WO1999012387A1 (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2336072A1 (en) | 1998-06-22 | 1999-12-29 | Slab Technology Limited | Loudspeakers |
| GB9929731D0 (en) * | 1999-12-16 | 2000-02-09 | New Transducers Ltd | Acoustic device |
| GB9930275D0 (en) * | 1999-12-21 | 2000-02-09 | New Transducers Ltd | Loudspeakers |
| DE10001410C2 (en) * | 2000-01-14 | 2001-12-06 | Harman Audio Electronic Sys | Flat speaker arrangement |
| US7548854B2 (en) | 2002-01-31 | 2009-06-16 | Awi Licensing Company | Architectural sound enhancement with pre-filtered masking sound |
| GB0229954D0 (en) * | 2002-12-20 | 2003-01-29 | Newlands Technology Ltd | Actuator |
| US11431312B2 (en) | 2004-08-10 | 2022-08-30 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US8284955B2 (en) | 2006-02-07 | 2012-10-09 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10848118B2 (en) | 2004-08-10 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10158337B2 (en) | 2004-08-10 | 2018-12-18 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| WO2006037587A2 (en) * | 2004-10-04 | 2006-04-13 | Volkswagen Ag | Device and method for the acoustic communication and/or perception in a motor vehicle |
| FI119794B (en) * | 2005-04-28 | 2009-03-13 | Panphonics Oy | Electrostatic converter, method of its connection and method of manufacture |
| US10848867B2 (en) | 2006-02-07 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10701505B2 (en) | 2006-02-07 | 2020-06-30 | Bongiovi Acoustics Llc. | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
| US10069471B2 (en) | 2006-02-07 | 2018-09-04 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US11202161B2 (en) | 2006-02-07 | 2021-12-14 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
| US9615189B2 (en) | 2014-08-08 | 2017-04-04 | Bongiovi Acoustics Llc | Artificial ear apparatus and associated methods for generating a head related audio transfer function |
| US9264004B2 (en) | 2013-06-12 | 2016-02-16 | Bongiovi Acoustics Llc | System and method for narrow bandwidth digital signal processing |
| US9883318B2 (en) | 2013-06-12 | 2018-01-30 | Bongiovi Acoustics Llc | System and method for stereo field enhancement in two-channel audio systems |
| US9906858B2 (en) | 2013-10-22 | 2018-02-27 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10820883B2 (en) | 2014-04-16 | 2020-11-03 | Bongiovi Acoustics Llc | Noise reduction assembly for auscultation of a body |
| US9615813B2 (en) | 2014-04-16 | 2017-04-11 | Bongiovi Acoustics Llc. | Device for wide-band auscultation |
| US10639000B2 (en) | 2014-04-16 | 2020-05-05 | Bongiovi Acoustics Llc | Device for wide-band auscultation |
| US9564146B2 (en) | 2014-08-01 | 2017-02-07 | Bongiovi Acoustics Llc | System and method for digital signal processing in deep diving environment |
| US9638672B2 (en) | 2015-03-06 | 2017-05-02 | Bongiovi Acoustics Llc | System and method for acquiring acoustic information from a resonating body |
| US9621994B1 (en) | 2015-11-16 | 2017-04-11 | Bongiovi Acoustics Llc | Surface acoustic transducer |
| US9906867B2 (en) | 2015-11-16 | 2018-02-27 | Bongiovi Acoustics Llc | Surface acoustic transducer |
| CA3096877A1 (en) | 2018-04-11 | 2019-10-17 | Bongiovi Acoustics Llc | Audio enhanced hearing protection system |
| WO2020028833A1 (en) | 2018-08-02 | 2020-02-06 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3247925A (en) * | 1962-03-08 | 1966-04-26 | Lord Corp | Loudspeaker |
| US3594028A (en) * | 1969-08-07 | 1971-07-20 | Macomber Inc | Sheet metal joint for panels and sheets |
| US4038505A (en) * | 1975-03-03 | 1977-07-26 | Motorola, Inc. | Subminiature connector arrangement |
| US4440818A (en) * | 1983-03-30 | 1984-04-03 | Teknor Apex Company | Floor mat connector device |
| DE3733000A1 (en) * | 1987-09-30 | 1989-04-13 | Rainer Cornelius Friz | Damping elements for multiway diaphragms |
| US4928312A (en) * | 1988-10-17 | 1990-05-22 | Amel Hill | Acoustic transducer |
| WO1992003024A1 (en) * | 1990-08-04 | 1992-02-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Panel-form loudspeaker |
-
1998
- 1998-08-24 EP EP98940362A patent/EP1010351A1/en not_active Withdrawn
- 1998-08-24 CN CN98808774A patent/CN1269958A/en active Pending
- 1998-08-24 IL IL13483498A patent/IL134834A0/en unknown
- 1998-08-24 CA CA002297041A patent/CA2297041A1/en not_active Abandoned
- 1998-08-24 WO PCT/GB1998/002532 patent/WO1999012387A1/en not_active Application Discontinuation
- 1998-08-24 JP JP2000509253A patent/JP2001515333A/en active Pending
- 1998-08-24 KR KR1020007002300A patent/KR20010023648A/en not_active Application Discontinuation
- 1998-08-24 AU AU88702/98A patent/AU745486B2/en not_active Ceased
- 1998-08-24 BR BR9812163-4A patent/BR9812163A/en not_active IP Right Cessation
- 1998-09-03 AR ARP980104403A patent/AR013954A1/en unknown
- 1998-09-28 TW TW087116066A patent/TW410525B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BR9812163A (en) | 2000-07-18 |
| EP1010351A1 (en) | 2000-06-21 |
| TW410525B (en) | 2000-11-01 |
| AU8870298A (en) | 1999-03-22 |
| AR013954A1 (en) | 2001-01-31 |
| CN1269958A (en) | 2000-10-11 |
| JP2001515333A (en) | 2001-09-18 |
| AU745486B2 (en) | 2002-03-21 |
| IL134834A0 (en) | 2001-05-20 |
| WO1999012387A1 (en) | 1999-03-11 |
| KR20010023648A (en) | 2001-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |