1980-02-22
1981-09-22
Griffin, Donald A.
354293, G03B 1738, G03B 962
Patent
active
042906857
ABSTRACT:
There is described a device for remotely controlling the shutter of a camera. The device includes a housing which incorporates a microphone for receiving an acoustic wave having a relatively high frequency in an audio frequency range, which is generated by a tone generating source, an amplifier circuit for amplifying the output of the microphone, an actuator which is caused to make one reciprocation by the output of the amplifier circuit, and an electric source for energizing the amplifier circuit and the acturator. The device further includes mounting device for fixedly securing the housing to the camera, and a release device for operating the shutter of the camera with the aid of one reciprocation of the actuator.
REFERENCES:
patent: 2949838 (1960-08-01), Skalabrin
patent: 3134547 (1964-05-01), Kapteyn et al.
patent: 3686672 (1972-08-01), Ishizuka
patent: 3805281 (1974-04-01), Narita et al.
patent: 3821769 (1974-06-01), Imura
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