Method for making edge for loudspeaker diaphragm

Details Method for making edge for loudspeaker diaphragm Method for making edge for loudspeaker diaphragm

1996-06-26

1998-01-06

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 469, 264 54, 264252, B29C 4406, B29C 4412

Patent

active

057051089

ABSTRACT:
An edge for loudspeaker diaphragm is made by disposing a diaphragm one of a pair of mating molds, disposing a strip-shaped base material of the edge on the said one of the molds, and hot-molding them with the other mold mated with the one mold. Foaming action of the base material occurs, and an eventual foamed edge is integralized with the diaphragm.

REFERENCES:
patent: 3935924 (1976-02-01), Nagao et al.
patent: 4147229 (1979-04-01), Flashman
patent: 5047191 (1991-09-01), Baitcher et al.
patent: 5099949 (1992-03-01), Mitobe
patent: 5111510 (1992-05-01), Mitobe
patent: 5319718 (1994-06-01), Yocum
patent: 5578800 (1996-11-01), Kijima
patent: 5599563 (1997-02-01), Yocum

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