Waterproof vibration plate for speaker

Details Waterproof vibration plate for speaker Waterproof vibration plate for speaker

2004-12-22

2008-12-16

Le, Huyen D (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S428000

Reexamination Certificate

active

07466839

ABSTRACT:
There is provided a speaker that uses a waterproof vibration plate that is obtained by forming a water repellent layer containing wax on a surface of paper pulp by the use of a wax-based emulsion in a suspension of the paper pulp, then forming a binder layer containing rosin or alkyl ketene dimmer on a surface of the water repellent layer by the use of a rosin sizing agent or an alkyl ketene dimmer sizing agent in the suspension, then forming an oil repellent layer containing a fluorinated resin on a surface of the binder layer by the use of a fluorine-based resin emulsion in the suspension, then forming the paper pulp into paper, and then heating and drying the same.

REFERENCES:
patent: 3292730 (1966-12-01), Moskow
patent: 3961378 (1976-06-01), White
patent: 5168527 (1992-12-01), Loya
patent: 5903658 (1999-05-01), Okazaki et al.
patent: 63-7000 (1988-01-01), None
patent: 4-324798 (1992-11-01), None
patent: 05-183985 (1993-07-01), None
patent: 2000-115885 (2000-04-01), None

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