Electronic horn with spiral deflecting walls coupled to a trunca

Details Electronic horn with spiral deflecting walls coupled to a trunca Electronic horn with spiral deflecting walls coupled to a trunca

1985-12-04

1987-08-25

Rowland, James L.

Communications: electrical

Selective

Having indication or alarm

181143, 181191, 181193, 340384R, 340388, 381156, G10K 912, G08B 300

Patent

active

046896090

ABSTRACT:
An electronic horn of compact dimensions. Oscillator circuits coupled to a mixing node produce a multiple frequency signal used to drive a horn transducer. One horn replaces the two horns used in the prior art. A reverberating chamber in close proximity to the transducer includes a cone shaped structure having multiple spiraling reflecting walls connected to the convex surface of the cone. Sound waves emitted by the transducer reverberate within the chamber as they bounce off the reflecting walls.

REFERENCES:
patent: 1637322 (1927-07-01), Weil
patent: 2310243 (1943-02-01), Klipsch
patent: 3477405 (1969-11-01), Jensen
patent: 3493966 (1970-02-01), Human
patent: 3846792 (1974-11-01), Haigh
patent: 3886546 (1975-05-01), Ueda
patent: 3917024 (1975-11-01), Kaiser, Jr.
patent: 4204200 (1980-05-01), Beyl, Jr.
patent: 4293851 (1981-10-01), Beyl, Jr.
patent: 4325456 (1982-04-01), Ureda
patent: 4486742 (1984-12-01), Kudo et al.
patent: 4558305 (1985-12-01), Black et al.

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