| (19) |
 |
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(11) |
EP 0 459 682 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
06.05.1992 Bulletin 1992/19 |
| (43) |
Date of publication A2: |
|
04.12.1991 Bulletin 1991/49 |
| (22) |
Date of filing: 21.05.1991 |
|
| (51) |
International Patent Classification (IPC)5: H04R 1/28 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
31.05.1990 GB 9012131
|
| (71) |
Applicant: Akroyd, Joe Speight |
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Telford, TF3 3BB,
Shropshire (GB) |
|
| (72) |
Inventor: |
|
- Akroyd, Joe Speight
Telford, TF3 3BB,
Shropshire (GB)
|
| (74) |
Representative: Sherrard-Smith, Hugh |
|
Appleyard, Lees & Co.
15 Clare Road
Halifax, HX1 2HY
West Yorkshire
Halifax, HX1 2HY
West Yorkshire (GB) |
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| |
|
| (54) |
Speaker cabinet with energy absorbent means |
(57) A tube 12 which is filled with polyurethane elastomer absorbs energy imparted to
it caused by relative movement between the cone and a rear wall 16 of a speaker cabinet
10. The tube is adhered to the magnet assembly of the speaker and the back wall 16.
Sound is permitted to pass out of the cabinet from the air within the cabinet from
waves passing through openings 34 in the tube, and sound is also able to pass out
of the back wall of the cabinet via the interior of the tube.