Loudspeaker with inverted cone

Details Loudspeaker with inverted cone Loudspeaker with inverted cone

2008-06-03

2008-06-03

Ensey, Brian (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S412000

Reexamination Certificate

active

07382893

ABSTRACT:
The movable structure of a loudspeaker is configured to include a bridging element that connects the base of a diaphragm to an electromagnetic actuator. The bridging element extends radially with respect to the translation axis of the actuator and secures the diaphragm at a radial distance from the actuator, thereby increasing the base part of the diaphragm. This increased base area allows the translatable part of the actuator to be shortened, thereby providing high-performance in structures of limited depth.

REFERENCES:
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patent: 5625701 (1997-04-01), Scanlan
patent: 5802191 (1998-09-01), Guenther
patent: 5920638 (1999-07-01), Tsai
patent: 6327372 (2001-12-01), Devantier et al.
patent: 6836551 (2004-12-01), Kuze et al.
patent: 2002/0094105 (2002-07-01), Boniface
patent: 2003/0081808 (2003-05-01), Kemmerer
patent: 2360899 (2001-10-01), None
John Borwick, “Loudspeaker and Headphone Handbook”, Mar. 2001, Focal Press, 3 edition, p. 501.
Leo L. Beranek, Acoustics, ISBN 0-88318-494-X, pp. 70 to 75.
Leo L. Beranek, Acoustics, ISBN 0-88318-494-X, pp. 183 to 200.

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