Signals and indicators – Horns – whistles and compressional wave generators
Patent
1990-12-07
1992-05-19
Cuchlinski, Jr., William A.
Signals and indicators
Horns, whistles and compressional wave generators
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
Cuchlinski Jr. William A.
O'Connor Edna M.
O'Connor Gregory W.
Worth W. Morris
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