Toy having a melody-making mechanism of a sound-detection type
First Claim
Patent Images
1. A doll toy of the type wherein, upon detection of a sound, a melody will be played, said doll toy having a body containing:
- a sound detecting means, said means generating an electric signal upon detection of sound;
an amplifying means comprising a transistor amplifier circuit for amplifying said electric signal from said sound detecting means;
a switching circuit to which said amplified signal is applied to create a voltage between outputs of said switching circuit;
a melody-making mechanism having a turntable disc player driven by a small electric motor on which a small sound disc is placed, a needle-supporting arm pivoted at its one end, a spring which returns the arm to an original position after the disc is played, and a motor switch associated with said switching circuit for activating said electric motor, said motor switch being opened by return movement of said supporting arm, wherein said melody-making mechanism is electrically connected to the output terminals of the switching circuit, said switching circuit further comprising six resistors R4, R5, R6, R7, R8 and R9 respectively, and three transistors Q2, Q3 and Q4 respectively, a diode D and a capacitor C2, wherein one side of resistor R4 receives said amplified signal and the other side of resistor R4 is connected to both the base of transistor Q2 and one side of resistor R7, the emitter of transistor Q2 being connected to the negative terminal of a dry cell battery, the collector of transistor Q2 being connected to one side of both resistor R5 and R6, the other side of resistor R5 being connected to the positive terminal of the dry cell battery and the other side of resistor R6 being connected to the base of transistor Q3, the emitter of transistor Q3 being connected to the positive terminal of the dry cell battery, the collector of transistor Q3 being connected to one side of resistor R8, one side of resistor R9 and the positive side of capacitor C2, the negative side of capacitor C2 being connected to the other side of resistor R7, the diode being connected in a forward direction between the negative terminal of the dry cell battery and a contact between resistor R7 and the negative side of capacitor C2, the other side of resistor R8 being connected to the negative terminal, the other side of resistor R9 being connected to the base of transistor Q4, the emitter of transistor Q4 being connected to the negative terminal, the collector of transistor Q4 being connected to the input of said melody-making mechanism such that the emitter and the collector of transistor Q4 comprise said outputs of said switching circuit and said resistor R7 and said capacitor C2 comprise a resistance-capacitor circuit;
such that, in operation said sound-detecting means, upon detection of a sound operates through said amplifier circuit and said switching circuit to actuate said melody-making mechanism until said capacitor is charged, whereupon said switching circuit no longer actuates said melody-making mechanism, said melody-making mechanism continuing to operate until the end of said disc is reached;
said dry cell battery providing power for operation of said amplifier circuit, detecting means, switching circuit and melody-making mechanism.
0 Assignments
0 Petitions
Accused Products
Abstract
A toy, such as a stuffed doll, having a melody-making mechanism of a sound-detection type is disclosed, in which the melody-making mechanism is provided with a sound-detector, an amplifier circuit and a switching circuit in such arrangement that operation of the melody-making mechanism may be discontinued after a predetermined period of time. The sound-detector may be in the form of a ceramic condenser or a microphone.
-
Citations
1 Claim
-
1. A doll toy of the type wherein, upon detection of a sound, a melody will be played, said doll toy having a body containing:
- a sound detecting means, said means generating an electric signal upon detection of sound;
an amplifying means comprising a transistor amplifier circuit for amplifying said electric signal from said sound detecting means;
a switching circuit to which said amplified signal is applied to create a voltage between outputs of said switching circuit;
a melody-making mechanism having a turntable disc player driven by a small electric motor on which a small sound disc is placed, a needle-supporting arm pivoted at its one end, a spring which returns the arm to an original position after the disc is played, and a motor switch associated with said switching circuit for activating said electric motor, said motor switch being opened by return movement of said supporting arm, wherein said melody-making mechanism is electrically connected to the output terminals of the switching circuit, said switching circuit further comprising six resistors R4, R5, R6, R7, R8 and R9 respectively, and three transistors Q2, Q3 and Q4 respectively, a diode D and a capacitor C2, wherein one side of resistor R4 receives said amplified signal and the other side of resistor R4 is connected to both the base of transistor Q2 and one side of resistor R7, the emitter of transistor Q2 being connected to the negative terminal of a dry cell battery, the collector of transistor Q2 being connected to one side of both resistor R5 and R6, the other side of resistor R5 being connected to the positive terminal of the dry cell battery and the other side of resistor R6 being connected to the base of transistor Q3, the emitter of transistor Q3 being connected to the positive terminal of the dry cell battery, the collector of transistor Q3 being connected to one side of resistor R8, one side of resistor R9 and the positive side of capacitor C2, the negative side of capacitor C2 being connected to the other side of resistor R7, the diode being connected in a forward direction between the negative terminal of the dry cell battery and a contact between resistor R7 and the negative side of capacitor C2, the other side of resistor R8 being connected to the negative terminal, the other side of resistor R9 being connected to the base of transistor Q4, the emitter of transistor Q4 being connected to the negative terminal, the collector of transistor Q4 being connected to the input of said melody-making mechanism such that the emitter and the collector of transistor Q4 comprise said outputs of said switching circuit and said resistor R7 and said capacitor C2 comprise a resistance-capacitor circuit;
such that, in operation said sound-detecting means, upon detection of a sound operates through said amplifier circuit and said switching circuit to actuate said melody-making mechanism until said capacitor is charged, whereupon said switching circuit no longer actuates said melody-making mechanism, said melody-making mechanism continuing to operate until the end of said disc is reached;
said dry cell battery providing power for operation of said amplifier circuit, detecting means, switching circuit and melody-making mechanism.
- a sound detecting means, said means generating an electric signal upon detection of sound;
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeKoichi Sakurai
-
Original AssigneeKoichi Sakurai
-
InventorsSakurai, Koichi
-
Primary Examiner(s)Stephan, Steven L.
-
Application NumberUS06/712,403Time in Patent Office672 DaysField of Search369/19, 369/20, 369/50, 369/63, 369/67, 340/286 M, 340/566, 367/198, 367/199, 446/175 ARUS Class Current369/67CPC Class CodesA63H 3/28 Arrangements of sound-produ...
