Warble signaling device
First Claim
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1. A warble signaling device comprising:
- a first oscillator means for oscillating at a first frequency, said first oscillator means including a first gate having at least one active input and an output;
a second oscillator means for oscillating at a second frequency different from said first frequency, said second oscillator means including a second gate having at least two active, inputs and an output;
a third oscillator means for oscillating at a third frequency different from said first and second frequencies, said third oscillator means including a third gate having at least two active inputs and an output;
an inverter having an input and an output;
a piezoelectric transducer;
said output of said first gate connected to the input of said inverter and to one input of said second gate;
said output of said inverter connected to one input of said third gate; and
the outputs of said second and third gates connected across said piezoelectric transducer.
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Abstract
There are three oscillator circuits which oscillate at different frequencies, each oscillator circuit including a gate having an input and an output. The output of the first gate is connected to an inverter and the input of the second gate. The output of the inverter is connected to the input of the third gate. The output of the second and third gates is connected across a piezoelectric transducer to produce a warble sound.
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Citations
2 Claims
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1. A warble signaling device comprising:
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a first oscillator means for oscillating at a first frequency, said first oscillator means including a first gate having at least one active input and an output; a second oscillator means for oscillating at a second frequency different from said first frequency, said second oscillator means including a second gate having at least two active, inputs and an output; a third oscillator means for oscillating at a third frequency different from said first and second frequencies, said third oscillator means including a third gate having at least two active inputs and an output; an inverter having an input and an output; a piezoelectric transducer; said output of said first gate connected to the input of said inverter and to one input of said second gate; said output of said inverter connected to one input of said third gate; and the outputs of said second and third gates connected across said piezoelectric transducer. - View Dependent Claims (2)
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Specification
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Current AssigneeYosemite, Investment, Inc.
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Original AssigneeEmhart Industries, Inc. (Stanley Black & Decker, Inc.)
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InventorsMatievic, Miroslav
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Primary Examiner(s)Grimm, Siegfried H.
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Application NumberUS06/779,263Time in Patent Office435 DaysField of Search331/46-50, 331/52, 331/55, 331/56, 331/111, 331/108 D, 331/143, 331/145, 331/153, 331/DIG. 3, 340/384 EUS Class Current331/47CPC Class CodesG08B 3/10 using electric transmission...Y10S 331/03 Logic gate active element o...
