Electromagnetic sound generator for automative vehicles and the

Details Electromagnetic sound generator for automative vehicles and the Electromagnetic sound generator for automative vehicles and the

1978-11-20

1981-05-12

Yasich, Daniel M.

Communications: electrical

Audible indication

Diaphragm

116142R, G08B 310, G10K 1110

Patent

active

042675529

ABSTRACT:
An electromagnetic sound generator, such as an automobile horn, has a thialled ferromagnetic coil housing with a rim bent back upon itself to form an outwardly projecting peripheral flange embracing a marginal zone of a membrane. A collar formed as an annular extension of that flange, overlying the membrane, engages a thermoplastic ring with freedom of radial expansion of the latter, the ring being cemented or otherwise secured to an overlying resonator with a convoluted shell.

REFERENCES:
patent: 1281877 (1918-10-01), Teste et al.
patent: 1335921 (1920-04-01), Rydberg
patent: 4057799 (1977-11-01), Warnod
patent: 4135473 (1979-01-01), Frigo

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