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Title:
BENDING WAVE PANEL LOUDSPEAKERS
Document Type and Number:
WIPO Patent Application WO/2000/070910
Kind Code:
A2
Abstract:
A method of making a structural or semi-structural object e.g. a car interior trim panel, comprising an integral bending-wave panel loudspeaker, characterised by thermoforming the object from a thermoformable panel material.

Inventors:
Bream, Charles (41 Whitehall Gardens Duxford Cambridgeshire CB2 4QL, GB)
Application Number:
PCT/GB2000/001665
Publication Date:
November 23, 2000
Filing Date:
May 15, 2000
Export Citation:
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Assignee:
NEW TRANSDUCERS LIMITED (37 Ixworth Place London SW3 3QH, GB)
Bream, Charles (41 Whitehall Gardens Duxford Cambridgeshire CB2 4QL, GB)
International Classes:
B60R11/02; H04R7/04; H04R31/00; B60R11/00; B60R13/00; H04R7/02; (IPC1-7): H04R9/06
Domestic Patent References:
WO1999011490A11999-03-11
WO1997009842A21997-03-13
Foreign References:
GB2341511A2000-03-15
FR2731579A31996-09-13
Other References:
PATENT ABSTRACTS OF JAPAN vol. 012, no. 044 (E-581), 9 February 1988 (1988-02-09) & JP 62 193498 A (MITSUBISHI ELECTRIC CORP), 25 August 1987 (1987-08-25)
PATENT ABSTRACTS OF JAPAN vol. 006, no. 259 (E-149), 17 December 1982 (1982-12-17) & JP 57 155899 A (MATSUSHITA DENKI SANGYO KK), 27 September 1982 (1982-09-27)
PATENT ABSTRACTS OF JAPAN vol. 006, no. 254 (E-148), 14 December 1982 (1982-12-14) & JP 57 152794 A (ONKYO KK), 21 September 1982 (1982-09-21)
Attorney, Agent or Firm:
Maguire, Boss (5 Crown Street St. Ives Cambridgeshire PE27 5EB, GB)
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Claims:
CLAIMS
1. A method of making a structural or semistructural object e. g. a car interior trim panel, comprising an integral bendingwave panel loudspeaker, characterised by thermoforming the object from a thermoformable panel material.
2. A method according to claim 1, characterised in that the thermoformable panel material is a sandwich panel having face skins separated by a core.
3. A method according to claim 1 or claim 2, characterised by shaping the panel material by the application of heat and pressure.
4. A method according to claim 3, characterised by tensioning the panel during the application of heat and pressure.
5. A method according to claim 2 or to claims 3 or 4 when dependent on claim 2, characterised by heating the faceskins to above their softening point and to heating the core to just below its softening point.
6. A method according to claim 5, characterised by shaping the panel by pressing while tensioning the faceskins.
7. A method according to claim 2, or any of claims 3 to 6 when dependent in claim 2, characterised in that the face skins comprise random short fibre veils.
8. A method according to claim 2, or any of claims 3 to 7 when dependent on claim 2, characterised in that the softening point of the core is greater than or equal to the softening point of the faceskin.
Description:
INTERNATIONALSEARCHREPORT Interi tal Application No PCT/GB00/01665 C.(Continuation)DOCUMENTSCONSIDEREDTOBERELEVANT Category ° Citation ofdocument,withindication,whereappropriate,oftherelevantpass agesRelevant to claim No. APATENTABSTRACTSOFJAPAN1-3 vol.012,no.044(E-581), 9February1988(1988-02-09) &JP62193498A(MITSUBISHIELECTRIC CORP),25August1987(1987-08-25) abstract APATENTABSTRACTSOFJAPAN1-3 vol.006,no.259(E-149), 17December1982(1982-12-17) &JP57155899A(MATSUSHITADENKISANGYO KK),27September1982(1982-09-27) abstract APATENTABSTRACTSOFJAPAN1-3 vol.006,no.254(E-148), 14December1982(1982-12-14) &JP57152794A(ONKYOKK), 21September1982(1982-09-21) abstract INTERNATIONALSEARCHREPORT Interl sal ApplicatlonNo formation on patent tamily members PC T/G B 00/01665 PatentdocumentPublication Patent family Publication citedinsearchreportdate member(s)date GB2341511A15-03-2000NONE WO9911490A11-03-1999AU 8870398 A 22-03-1999 BR 9812167 A 18-07-2000 CN 1269755 T 11-10-2000 EP 1007390 A 14-06-2000 ZA 9807584 A 23-02-1999 FR2731579A13-09-1996NONE WO9709842A13-03-1997AT 177579 T 15-03-1999 AT 177574 T 15-03-1999 AT 177580 T 15-03-1999 AT 177575 T 15-03-1999 AT 186617 T 15-11-1999 AT 177581 T 15-03-1999 AT 177582 T 15-03-1999 AT 177583 T 15-03-1999 AT 177578 T 15-03-1999 AT 177576 T 15-03-1999 AT 179297 T 15-05-1999 AT 177577 T 15-03-1999 AT 179563 T 15-05-1999 AT 176826 T 15-03-1999 AT 179045 T 15-04-1999 AT 179296 T 15-05-1999 AT 177281 T 15-03-1999 AT 179564 T 15-05-1999 AT 177282 T 15-03-1999 AT 179043 T 15-04-1999 AT 179044 T 15-04-1999 AU 702865 B 11-03-1999 AU 6880196 A 27-03-1997 AU 702920 B 11-03-1999 AU 6880296 A 27-03-1997 AU 702867 B 11-03-1999 AU 6880396 A 27-03-1997 AU 703015 B 11-03-1999 AU 6880496 A 27-03-1997 AU 702863 B 11-03-1999 AU 6880596 A 27-03-1997 AU 702873 B 11-03-1999 AU 6880696 A 27-03-1997 AU 702999 B 11-03-1999 AU 6880796 A 27-03-1997 AU 703061 B 11-03-1999 AU 6880896 A 27-03-1997 AU 703000 B 11-03-1999 AU 6880996 A 27-03-1997 AU 703071 B 11-03-1999 AU 6881096 A 27-03-1997 AU 703058 B 11-03-1999 AU 6881296 A 27-03-1997 AU 705592 B 27-05-1999 AU 6881396 A 27-03-1997 AU 703296 B 25-03-1999 AU 6881496 A 27-03-1997 AU 699890 B 17-12-1998 INTERNATIONALSEARCHREPORT r------------------. Inte ial ApplicationNo mtormationonpatenttamflymemtters,, PatentdocumentPublicationPatentfamilyPublication citedinsearchreportdate member(s)date WO9709842AAU6881596A27-03-1997 AU 703198 B 18-03-1999AU 703198 B 18-03-1999 JP62193498A25-08-1987NONE JP57155899A27-09-1982NONE JP57152794A21-09-1982NONE