Magnetic electro-acoustic transducer construction

Details Magnetic electro-acoustic transducer construction Magnetic electro-acoustic transducer construction

1980-10-20

1982-11-23

Stellar, George G.

H04R 1100, H04R 3100

Patent

active

043607110

ABSTRACT:
A method of making an acoustic transducer for telephones consists of securing the magnet assembly and the armature supporting ring inside the plastic casing of the transducer and then surrounding or partly surrounding these with a thermosetting resin such as epoxy resin, poured inside the casing.
The core, the armature supporting ring and the outer edge of the casing are then machined with reference to the magnet face to the required very small tolerances, the cured resin holding the parts securely during the machining operations.

REFERENCES:
patent: 2902668 (1959-09-01), Savit
patent: 3497638 (1970-02-01), Cohen
patent: 4205205 (1980-05-01), Babb

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