Multi-tone whistle

Signals and indicators – Horns – whistles and compressional wave generators

Patent

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Details

84330, 116141, 446206, G10K 500

Patent

active

051137844

ABSTRACT:
A simple toy whistle includes a mouthpiece and multiple resonant chambers. In order to permit single notes to be played by one resonant chamber, while preventing the other chambers from producing audible tones when the whistle is played, each such chamber is provided an additional opening. This opening is provided with an annular boss so that it can be sealed by the pad of the user's thumb or finger when the corresponding chamber is to resonate.

REFERENCES:
patent: 649576 (1900-05-01), Hatch
patent: 2529661 (1950-11-01), Millstein
patent: 3029554 (1962-04-01), Mobley
patent: 4207703 (1980-06-01), Saso
patent: 4709651 (1987-12-01), Lance

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