Loudspeaker

Details Loudspeaker Loudspeaker

2008-09-18

2011-10-18

Le, Huyen D (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S403000, C381S423000

Reexamination Certificate

active

08041069

ABSTRACT:
A high efficiency loudspeaker without a damper is provided. The loudspeaker includes magnetic circuit having a magnetic gap and a voice coil member, which has movable coil, disposed in the magnetic gap of the magnetic circuit. The loudspeaker also includes a diaphragm, whose inner peripheral part is linked with the voice coil member, outside the magnetic gap and a frame linked with an outer peripheral part of the diaphragm via a first edge. An inner peripheral part of a suspension holder is linked with the voice coil member at a linked position which is closer to the magnetic circuit than a linked position of the diaphragm and the voice coil member. An outer peripheral part of the suspension holder is linked with a frame via a second edge. The first edge and the second edge are substantially symmetrical with each other about a median of a first edge and a second edge.

REFERENCES:
patent: 5323469 (1994-06-01), Scholz
patent: 5583944 (1996-12-01), Morohoshi et al.
patent: 5847333 (1998-12-01), D'Hoogh
patent: 6031925 (2000-02-01), Shteyn
patent: 6095280 (2000-08-01), Proni
patent: 6236733 (2001-05-01), Kato et al.
patent: 7209570 (2007-04-01), Funahashi et al.
patent: 7324659 (2008-01-01), Funahashi et al.
patent: 7443996 (2008-10-01), Funahashi et al.
patent: 7822222 (2010-10-01), Funahashi
patent: 0 836 362 (1998-04-01), None
patent: 45-32035 (1970-10-01), None
patent: 59-77797 (1984-05-01), None
patent: 08-102993 (1996-04-01), None
patent: 10-066193 (1998-03-01), None
patent: 11-150791 (1999-06-01), None
patent: 99/66763 (1999-12-01), None
patent: 02/065811 (2002-08-01), None
International Search Report mailed Sep. 3, 2002 for International Application No. PCT/JP02/05722.
U.S. Patent Office Action mailed May 22, 2008 for U.S. Appl. No. 11/418,143.
U.S. Notice of Allowance mailed Jul. 28, 2008 for U.S. Appl. No. 11/418,143.
Supplementary European Search Report issued Jan. 10, 2007 in International (PCT) Application No. PCT/JP0205722.

Affiliated with

Also associated with

Rating

Loudspeaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Loudspeaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Loudspeaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4259022