Sound producing control circuit assembly for picture frames

Details Sound producing control circuit assembly for picture frames Sound producing control circuit assembly for picture frames

1994-05-24

1996-05-07

Dorner, Kenneth J.

Card, picture, or sign exhibiting

Picture frame

With illumination means

40455, 40457, A62H 3338

Patent

active

055134548

ABSTRACT:
A sound producing control circuit assembly includes a box covered with a fixed supporting board and fastened to a picture frame at the back to hold a sound producing circuit. A movable conductive board is supported on springs above the fixed supporting board and is urged against the glass of the picture frame to hold down a picture. The fixed supporting board has a first contact metal plate and a second contact metal plate with contact legs spaced above the first contact metal plate for controlling the operation of the sound producing circuit. When the glass is pressed against the movable conductive plate, at least one contact leg of the second contact metal plate is forced to contact the first contact metal plate causing the sound producing circuit to be electrically connected to thereby produce sound.

REFERENCES:
patent: 4531310 (1985-07-01), Acson et al.
patent: 5182872 (1993-02-01), Lee et al.

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