Whistle

Details Whistle Whistle

1997-02-11

1998-10-27

Gutierrez, Diego F. F.

Signals and indicators

Horns, whistles and compressional wave generators

84330, 446204, B06B 1300

Patent

active

058265341

ABSTRACT:
A portable whistle is assembled from an injection molded main body having an air blowing opening within which an injection molded plug is inserted so that whistling is created when air is blown into the opening and through a groove formed in the plug and a slot formed in the body.

REFERENCES:
patent: 766027 (1904-07-01), Fairchild
patent: 805727 (1905-11-01), Howe
patent: 1315019 (1919-09-01), Heyer
patent: 1648245 (1927-11-01), Rudolph
patent: 1779795 (1930-10-01), Backstatter
patent: 2617324 (1952-11-01), Brody
patent: 3085150 (1963-04-01), Bautsch
patent: 4893580 (1990-01-01), Joseph, Jr. et al.
patent: 5002006 (1991-03-01), Ehrenreich
patent: 5690534 (1997-11-01), Shea

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