Diaphragm for electroacoustic transducer and method of...

Details Diaphragm for electroacoustic transducer and method of... Diaphragm for electroacoustic transducer and method of...

2006-08-15

2006-08-15

Ni, Suhan (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S423000

Reexamination Certificate

active

07092544

ABSTRACT:
A molten resin is injected into a cavity together with long fibers. Opposite surfaces of the resin are solidified as a fiber-resin mixture temperature drops. These surface layers become non-foam layers. A foam layer is created between the non-foam layers. A pressure reduction process is applied to cause a spring back effect when the foam layer is created. A diaphragm having these three layers can be manufactured in an inexpensive process, but physical characteristics and appearances of the diaphragm are not sacrificed.

REFERENCES:
patent: 5259036 (1993-11-01), Seeler
patent: 6030561 (2000-02-01), Sato et al.
patent: 6377695 (2002-04-01), Azima et al.
patent: 6453049 (2002-09-01), Chu et al.
patent: 08-340594 (1996-12-01), None
patent: 11-275687 (1999-10-01), None

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