Loudspeaker

Details Loudspeaker Loudspeaker

2007-05-07

2011-10-18

Le, Huyen D. (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S403000, C381S404000

Reexamination Certificate

active

08041068

ABSTRACT:
Loudspeaker has frame, magnetic circuit, voice coil, diaphragm, first combination and second combination. First combination and second combination are both provided closer to magnetic circuit than diaphragm, the inner rims of which are connected to voice coil while the outer rims are to frame. First combination has first damper and first edge wherein first edge has first edge protrusion protruding in a direction toward diaphragm. Second combination has second damper and second edge wherein second edge has second edge protrusion protruding in an opposite direction to the protruding direction of first edge protrusion This structure obtains loudspeaker that distortion is suppressed and weight reduction is easy for an excursion part thus improved in driving efficiency.

REFERENCES:
patent: 5847333 (1998-12-01), D'Hoogh
patent: 6655495 (2003-12-01), Kuze et al.
patent: 2003/0185415 (2003-10-01), Funahashi et al.
patent: 2005/0201588 (2005-09-01), Funahashi et al.
patent: 45-33465 (1970-10-01), None
patent: 45-033465 (1970-10-01), None
patent: 56-049188 (1981-11-01), None
patent: 57-037582 (1982-08-01), None
patent: 58-066797 (1983-05-01), None
patent: 62-109596 (1987-07-01), None
patent: 2-133097 (1990-11-01), None
patent: 2-133097 (1990-11-01), None
patent: 02-133097 (1990-11-01), None
patent: 03-247099 (1991-11-01), None
patent: 09-284890 (1997-10-01), None
patent: 11-510033 (1999-08-01), None
patent: 2003-199192 (2003-07-01), None
patent: 2003-199192 (2003-07-01), None
patent: 2004-007332 (2004-01-01), None
patent: 99/04597 (1999-01-01), None
Supplementary European Search Report dated Jun. 23, 2010.
Japanese Office action dated Jul. 13, 2010 for Appl. No. 2006-131332.
International Search Report Dated Jun. 5, 2007.

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-4300536