Siren
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United States of America Patent
Stats
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Jul 16, 1985
Grant Date -
N/A
app pub date -
Dec 3, 1982
filing date -
Dec 3, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved siren including means for producing and directing sound energy against a rotatable reflector which directs the sound waves out from the siren in a generally horizontal direction and which due to rotation of the reflector about a vertical axis causes such sound waves to be directed in all horizontal directions. One embodiment includes rotor and stator means which create sound energy that is directed generally downwardly in the manner of a ring radiator, together with a reflector mounted beneath the rotor and stator for rotation about a generally vertical axis, the reflector being tilted relative to its axis of rotation to intercept the downwardly directed sound waves and direct them out horizontally thereby providing a directional siren which covers a 360 degree area due to rotation of the reflector.
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