Speaker

Details Speaker Speaker

2006-02-28

2006-02-28

Le, Huyen (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S401000, C381S412000, C381S398000, C381S404000

Reexamination Certificate

active

07006651

ABSTRACT:
A small and high-performance waterproof speaker which can be manufactured inexpensively by decreasing the number of components. Front face of a case (1) is sealed hermetically by a water resistant diaphragm (2) from which a voice coil (3) is projecting inward and a magnetic circuit part (5) having a part (6a) being fitted to the voice coil (3) and a permanent magnet (8) is secured to a first resilient plate (4) provided in the case (1). The first resilient plate (4) is provided with a plurality of through holes (18) and the fitting part (6a) is coupled with the diaphragm (2) through a first coupling member (13) of resilient material. On the other hand, an inertial member (12) is secured to a second resilient plate (11) disposed, oppositely to the first resilient plate (4), in the case (1) and the second resilient plate (11) is coupled with the first resilient plate (4) through a second coupling member (14) of resilient material.

REFERENCES:
patent: 5825718 (1998-10-01), Ueki et al.
patent: 54-159108 (1979-12-01), None
patent: U-55-124994 (1980-09-01), None
patent: 60-64599 (1985-04-01), None
patent: 60-112158 (1985-07-01), None
patent: 60-160233 (1985-08-01), None
patent: 6-311597 (1994-11-01), None
patent: 10-93672 (1998-04-01), None
patent: 11-113082 (1999-04-01), None
patent: 00/02303 (2000-01-01), None
Patent Abstracts of Japan, vol. 009, No. 201, Aug. 17, 1985 & JP 60 064599 A (PIONEER KK), Apr. 13, 1985.
Patent Abstracts of Japan, vol. 1999, No. 09, Jul. 30, 1999 & JP 11 113082 A (UETAKKUSU KK), Apr. 23, 1999.
European Search Report mailed Mar. 22, 2005 in corresponding EP application No. 02700744.2-2202-JP201658.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 23686/1979 (Laid-open No. 124994/1980), Sep. 4, 1980.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 203576/1983 (Laid-open No. 112158/1985), Jul. 30, 1985.

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