Telephone transducers

Details Telephone transducers Telephone transducers

Filed on

1982-09-14

Date issued

1984-01-24

Examiner

Harris, George

Patent Class

Electricity: magnetically operated switches, magnets, and electr

SubClass

Magnets and electromagnets

SubSubClass

With magneto-mechanical motive device

Other Related Categories

179179, H01F 700

Type

Patent

Status

active

Patent number

044279582

Description

ABSTRACT:
An acoustic transducer of novel structure suitable for automatic assembly is made by arranging with its wall upwards a generally cup-shaped rear cover having a cylindrical wall out-turned at its upper end and extending from the rim of a base divided along a chord into a major segment for receiving an electromagnetic driving unit and a terminal receiving minor segment at a higher vertical level than the major segment. The major segment has on its inner face fixing lands disposed symmetrically with respect to a diameter normal to said chord offset away from the minor segment and extending inwards from the side wall. Each fixing land is formed to define a fixing location and having on its face presented to the minor segment an upstanding locator wall.

REFERENCES:
patent: 3692264 (1972-09-01), Burkhard et al.
patent: 3947647 (1976-03-01), Swinehart

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