Magnetic circuit for loudspeaker and loudspeaker comprising it

Details Magnetic circuit for loudspeaker and loudspeaker comprising it Magnetic circuit for loudspeaker and loudspeaker comprising it

2006-12-12

2006-12-12

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S420000

Reexamination Certificate

active

07149322

ABSTRACT:
A magnetic circuit of the present invention uses a yoke, wherein a thickness of a bottom portion10bof the yoke10is thicker than a thickness of a cylindrical peripheral portion10aof the yoke10. The magnetic circuit of the present invention includes the yoke, a magnet2bonded to the bottom portion of the yoke, and a top plate3bonded to the magnet, the top plate forming a magnetic gap with the cylindrical peripheral portion in between. According to a configuration of the present invention, it is possible to reduce the magnetic saturation in the bottom portion of the yoke and to improve the efficiency of the magnetic circuit. As a result, the configuration contributes to improve the performance and efficiency of a loudspeaker using the magnetic circuit of the present invention.

REFERENCES:
patent: 5-31496 (1993-04-01), None
patent: 5-103393 (1993-04-01), None
patent: 7-264695 (1995-10-01), None
patent: 2001-128287 (2001-05-01), None
patent: 2001-346289 (2001-12-01), None

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