Method for manufacturing a diaphragm assembly

Details Method for manufacturing a diaphragm assembly Method for manufacturing a diaphragm assembly

Filed on

2006-06-30

Date issued

2009-11-03

Examiner

Kim, Paul D (Department: 3729)

Patent Class

Metal working

SubClass

Method of mechanical manufacture

SubSubClass

Electrical device making

Other Related Categories

C029S609100, C029S876000, C029S877000, C029S886000, C181S158000, C216S062000, C216S066000, C216S067000, C381S174000, C381S191000, C381S361000, C438S003000, C438S042000, C438S057000, C438S098000

Type

Reexamination Certificate

Status

active

Patent number

07610670

Description

ABSTRACT:
A diaphragm assembly used for a condenser microphone has a diaphragm made of a resin film including a metallized film on one surface of a supporter ring. The diaphragm is made by a first step of bonding a ring jig of a larger diameter than the supporter ring to the resin film having the metallized film composed of a ductile metallic material on the one surface via an adhesive without exerting tension on the resin film; a second step of heating and contracting the resin film bonded to the ring jig without applying the tension at a temperature over a glass transition point of a film material; and a third step of bonding the supporter ring to the resin film via an adhesive in a state of exerting predetermined tension on the resin film. The diaphragm assembly is cut out of the resin film after the adhesive becomes hardened.

REFERENCES:
patent: 5014322 (1991-05-01), Yasuda et al.
patent: 5038459 (1991-08-01), Yasuda et al.
patent: 5879724 (1999-03-01), Sakamoto
patent: 7287327 (2007-10-01), Ito et al.
patent: 57044399 (1982-03-01), None

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