Whistle for children's book

Details Whistle for children's book Whistle for children's book

1982-11-22

1984-12-25

Yu, M.

Amusement devices: toys

Operated by relatively moving fluid or pressure differential

Including mouthpiece for blowing or sucking

446404, 281 15R, 281 1, A63H 500

Patent

active

044901232

ABSTRACT:
A whistle is integrally formed from the pages of a children's book. Apertures are formed in adjacent, interior pages, and the apertures are positioned to overlap to form a resonant cavity. A slot is provided in one of the interior pages to provide an air inlet passage through which air may be blown into the resonant cavity. The cover of the book has an opening which forms an air outlet passage, through which air from the resonant cavity is exhausted. In operation, the pages of the book are pressed tightly together to seal the resonant cavity and prevent air leakage therefrom. To facilitate such sealing, the book includes printed matter indicating the general location in which the child should place his fingers when pressing the pages together.

REFERENCES:
patent: 2906058 (1959-09-01), Barker
patent: 3323251 (1967-06-01), Henry
patent: 4249757 (1981-02-01), Gella

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