Whistle

Details Whistle Whistle

1990-08-24

1992-02-11

Shoap, Allan N.

Signals and indicators

Horns, whistles and compressional wave generators

116141, 446204, G01K 500

Patent

active

050867261

ABSTRACT:
A referees sports whistle of mandolin shape is provided which has three rectangular whistle chamber elements of the same order of length contained within the mandolin shape of the whistle and arranged side-by-side in a common plane. An exhaust port is provided on the top surface of the whistle to exhaust air, blown into the whistle chamber elements, entirely through the top of the whistle. The whistle is manufactured from two separately moulded parts comprising a first top cover portion including the exhaust port and a second part comprising a main body part including a bulbous portion to be gripped at the sides thereof by the user.

REFERENCES:
patent: 2529661 (1950-11-01), Millstein
patent: 2619865 (1952-12-01), Lynch
patent: 4207703 (1980-06-01), Saso
patent: 4709651 (1987-12-01), Lance
patent: 4821670 (1989-04-01), Foxcroft et al.

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