Title:
MAGNET ASSEMBLY
Document Type and Number:
WIPO Patent Application WO2001006523
Kind Code:
A3
Abstract:
A transducer comprises a magnet assembly comprising a magnet (1), magnetically permeable inner (3) and outer pole tips (5) and a voice coil (7) mounted in a gap between the pole tips. Either or both pole tips is electrically conductive in a plane substantially orthogonal to the axis of the voice coil in a region extending into the body of the pole tips from the edge of the pole tips adjoining the gap.
Inventors:
BANK GRAHAM (GB)
Application Number:
PCT/GB2000/002706
Publication Date:
July 19, 2001
Filing Date:
July 19, 2000
Export Citation:
Assignee:
NEW TRANSDUCERS LTD (GB)
BANK GRAHAM (GB)
BANK GRAHAM (GB)
International Classes:
H04R7/04; H04R9/02; H04R9/04; (IPC1-7): H04R9/02
Foreign References:
| US3867587A | 1975-02-18 | |||
| US3830986A | 1974-08-20 | |||
| US3632904A | 1972-01-04 | |||
| US3922501A | 1975-11-25 | |||
| US3783311A | 1974-01-01 |
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