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US 11,898,823 B2Granted
Non-lethal crowd-control system
OwnerAdam Benjamin Tannenbauminventor
Life of this patent
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Abstract
The invention herein disclosed is a non-lethal crowd-control system that uses ultrasonic sound waves to induce disarming sensations of tickling/tingling upon persons in a hostile/violent crowd who are located within a zone of desired crowd control. The sensations can cause persons to cease current behavior and attempt to eliminate the sensations. Moving backwards out of the areal zone of control will reduce or eliminate the sensations. As a result a control zone area is established without use of batons, sprays or rubber-bullet loaded weaponry.
Claims4
A system comprising:
- an ultrasonic electric wave generator operative to produce electrical signals at user-selectable ultrasonic frequencies which when transduced to sound waves are known to evoke a tingling sensation on exposed human skin;
- an ultrasonic electric wave amplifier operative to amplify incoming ultrasonic electric wave signals, to user-selectable power levels, wherein the amplified ultrasonic electric wave signals have essentially the same signal characteristics as said incoming ultrasonic electric wave signals, and enable a user to adjust power levels that just begin to evoke a tingling sensation when transduced to sound waves;
- a multiplexor, microcontroller, adjustable phasing subsystem comprising:
- a multiplexor operative to receive said amplified ultrasonic electric wave signal and multiplex said amplified ultrasonic electric wave signal into a plurality of outputs wherein each said output has essentially the same signal characteristics as said amplified ultrasonic electric wave signal;
- and
- an adjustable phasing subsystem operative to alter phase characteristics of said plurality of outputs, under programmed control of a microcontroller, after which each individual output of said plurality of outputs is conveyed to each individual ultrasonic sound transducer in an array of ultrasonic sound transducers.
3 more elements
A method comprising:
- selecting a distance range over which ultrasonic sound waves may induce tickling/tingling sensations;
- selecting an ultrasonic sound wave amplifier power output determined to induce said tickling/tingling sensation of said distance range;
- and
- prompting a microcontroller to apply determined phase differences to identical signals conveyed to ultrasonic-sound transducers so as to create a beam-formed output determined to induce said tickling/tingling sensation at said distance range.
1 more element
Dependencies are inferred from the claim text.