Bone conduction device and tympanum thereof

Details Bone conduction device and tympanum thereof Bone conduction device and tympanum thereof

2011-07-19

2011-07-19

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Body contact wave transfer

C381S326000, C381S380000

Reexamination Certificate

active

07983431

ABSTRACT:
The object is to provide a bone conduction device and its tympanum, wherein the bone conduction device can be efficiently mounted without generating a dead space in a case having a limited installation space such as a cellular phone's case having a large display screen. A magnetic sound converter device has an outer magnetic structure wherein a voice coil (3) is mounted on a center magnetic pole (2) of a yoke (1) and a magnet (4) is arranged on the outer side of the voice coil (3). The yoke (1) and the center magnetic pole (2) thereof are vertically long, the magnet (4) is arranged on the short side edge parts on the both sides of the yoke, and a tympanum fixing part (6) is arranged on the outer side of each magnet (4) on a magnet arrangement axis.

REFERENCES:
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patent: 2459325 (1949-01-01), Knowles
patent: 2482044 (1949-09-01), Vernier
patent: 5337364 (1994-08-01), Fitch
patent: 6141427 (2000-10-01), Fukuda
patent: 11-355871 (1999-12-01), None
patent: 2001-313989 (2001-11-01), None
patent: 2002-199480 (2002-07-01), None
patent: 2003-340370 (2003-12-01), None
patent: 2001111653 (2001-12-01), None

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