Echo-type toy megaphone

Details Echo-type toy megaphone Echo-type toy megaphone

1991-07-16

1992-07-07

Yu, Mickey

Amusement devices: toys

Sounding

Voice-actuated diaphragm

181138, A63H 500, G08B 100

Patent

active

051278707

ABSTRACT:
A toy megaphone including a housing having a number of openings formed in the upper end, a member fixed in an upper portion of the housing, and a spring biased between the member and a lower end of the housing, and the member and the spring being caused to vibrate when a sound wave is propagated into the housing via the openings.

REFERENCES:
patent: 453600 (1891-06-01), Sunderland
patent: 481133 (1892-08-01), Bowen
patent: 1259600 (1918-03-01), Carlisle
patent: 1576903 (1926-03-01), Fontanella
patent: 2201588 (1940-05-01), Kuhns
patent: 2623957 (1952-12-01), Cragg et al.
patent: 2806906 (1957-09-01), Junghans
patent: 3343298 (1967-09-01), Green
patent: 4187635 (1980-02-01), Deissler

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