Sound producing ball

Details Sound producing ball Sound producing ball

1986-03-13

1988-04-12

Hafer, Robert A.

Amusement devices: toys

Sounding

Including rolling or tumbling toy

273 58G, A63H 3326

Patent

active

047371340

ABSTRACT:
A sound producing device producing different tones when rotated in front of a light source. A light transducer mounted at one spot at the surface of the device produces signals corresponding to the amount of light illuminating the light transducer. An oscillator is coupled to the light transducer and to a speaker to produce the tones. A motion switch is coupled to the oscillator to shut off production of sound when the device has been left at rest for a certain time period.

REFERENCES:
patent: 3304651 (1967-02-01), Deyerl
patent: 3508751 (1970-04-01), Meyer et al.
patent: 3935669 (1976-02-01), Potrzuski et al.
patent: 4294035 (1981-10-01), Klein
patent: 4403777 (1983-09-01), Del Principe et al.

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