G - Physics – 11 – B
Patent
G - Physics
11
B
352/21.23
G11B 15/18 (2006.01) G11B 15/08 (2006.01) G11B 15/16 (2006.01) G11B 15/22 (2006.01) G11B 23/087 (2006.01)
Patent
CA 1134507
A FAST REWINDING DEVICE FOR CASSETTE TAPES Abstract of the Disclosure The specification discloses a fast rewinding device for cassette tapes in a tape recorder which comprises a main body on which a tape cassette having the usual transparent windows therein can be placed. The device is provided with a light source, and a light receiving element spaced from and in alignment with said light source, so that the light from said light source is received by said light receiving element through the transparent windows in the tape cassette. The electrical circuit of the device includes a motor for rotating the tape in the rewinding direction, a power source for actuat- ing the motor, a transistor electrically connected between the motor and power source, a phototransistor adapted to limit the electric current to said transistor upon receipt of light from the light source through the windows, a resistance, a variable resistor and a power source switch for energizing the electrical circuit. The device enables the tape in the cassette to be rewound at a very fast rate without any risk of tape breakage when the tape is fully rewound.
305702
Kirby Eades Gale Baker
Yukawa Yoshiki
LandOfFree
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