Communications: electrical – Audible indication – Weatherproofing
Patent
1982-12-27
1985-11-19
Caldwell, Sr., John W.
Communications: electrical
Audible indication
Weatherproofing
340390, 340384R, 1791155H, 181143, G08B 300
Patent
active
045545316
ABSTRACT:
The stator of the sound generator in the siren of this invention is mounted on struts that diverge upwardly from the top of an upright post, with its axis coinciding with that of the post. The coaxial rotor of the sound generator is driven by a motor mounted on top of the stator. Sound from the generator is concentrated and directed by a horn that flares along its length from a closed end portion to a mouth. The closed end portion is dome-like and concentrically surrounds and covers the sound generator, opening unrestrictedly downwardly into a bottom portion of the horn that curves along its length so that the mouth, which is wholly spaced below the sound generator, opens to one side of the post. The post extends through a bottom wall portion of the horn. Rollers supported by the stator engage a downwardly facing annular track surface in the closed end portion of the horn to support the horn for rotation, one roller being rotatably driven from the siren motor to rotate the horn during siren operation.
REFERENCES:
patent: 1332322 (1920-03-01), Cole
patent: 1417983 (1922-05-01), Freeble
patent: 1761162 (1928-06-01), Volf
patent: 2198026 (1940-04-01), Farmer
patent: 2203715 (1940-06-01), Benecke
patent: 3454729 (1965-09-01), Seebinger
patent: 3797606 (1974-03-01), Edwards
patent: 3888333 (1975-06-01), Yamaguchi
Caldwell Sr. John W.
Nilles James E.
Queen Tyrone
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