Electromagnetic sound generator

Details Electromagnetic sound generator Electromagnetic sound generator

1975-08-04

1977-06-07

Stellar, George G.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340388, G10K 914

Patent

active

040285030

ABSTRACT:
A sound generator is disclosed having an armature of magnetizable material carried by a membrane fixed along its periphery to a frame carrying an alternating current electromagnetic circuit including coils and at least one pair of poles, said armature consists of an elongated tongue having one end rigidly connected near the center of said membrane, said one end being placed opposite and at a distance from one pole face and having a free end placed opposite and at a distance from the other pole face and at a distance from said membrane.

REFERENCES:
patent: 540969 (1895-06-01), Field
patent: 3214753 (1965-10-01), Dodge

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