The present invention relates generally to the field of an electronic disabling device for immobilizing a live target. More specifically, the present invention is related to an electronic disabling device having adjustable output pulse power and a method for providing the same.
An electronic disabling device can be used to refer to an electrical discharge weapon or a stun gun. The electrical discharge weapon connects a shocking power to a live target by the use of darts projected with trailing wires from the electrical discharge weapon. The shocks debilitate violent suspects, so peace officers can more easily subdue and capture them. The stun gun, by contrast, connects the shocking power to the live target that is brought into direct contact with the stun gun to subdue the target. Electronic disabling devices are far less lethal than other more conventional weapons such as firearms.
In general, the basic ideas of the above described electronic disabling devices are to disrupt the electric communication system of muscle cells in a live target. That is, an electronic disabling device generates a high-voltage, low-amperage electrical charge. When the charge passes into the live target's body, it is combined with the electrical signals from the brain of the live target. The brain's original signals are mixed in with random noise, making it very difficult for the muscle cells to decipher the original signals. As such, the live target is stunned or temporarily paralyzed. The current of the charge may be generated with a pulse frequency that mimics a live target's own electrical signal to further stun or paralyze the live target.
To dump this high-voltage, low-amperage electrical charge, the electronic disabling device includes a shock circuit having multiple transformers and/or autoformers that boost the voltage in the circuit and/or reduce the amperage. The shock circuit may also include an oscillator to produce a specific pulse pattern of electricity and/or frequency.
Current electronic disabling devices take the lower voltage, higher current of a battery or batteries and convert it into a higher voltage, lower current output. This output must contact an individual in two places to create a full path for the energy to flow. For stun guns, this output is provided to two metal contacts on the contacting side of the device that are a short distance apart. On the electronic discharge weapons, this output is provided to two metal darts (or probes) that are propelled into the live target (or individual). The distance between the probes is normally larger than the stun gun contacts to allow for a greater effect of the live target. The metal probes are connected to the electrical circuitry in the device by thin conducting wires that carry the energy from/to the device and from/to the metal probes. With the current devices, only one level of output power is available per device package. Therefore a larger than necessary high voltage waveform may be used on a target that could have been sufficiently immobilized by a lower high voltage waveform.
In view of the foregoing, it would be desirable to create an electronic disabling device for immobilization and capture of a live target having a power control having selectable power levels such that the electronic disabling device does not apply a power level to a live target that might possibly be unsafe to that particular individual.
The present invention relates to a system and/or an associated method for providing an electronic disabling device with a level of power control. The invention provides the electronic disabling device with multiple selectable power levels in one device package. This would allow a user of the electronic disabling device to start with a low power setting (e.g., the lowest power setting) and if the power was not effective, incrementally increase the power until it was effective. This adds a level of safety such that the user does not apply a power level to a live target that might possibly be unsafe to that particular individual.
In one exemplary embodiment of the present invention, an electronic disabling device has multiple adjustable power levels to immobilize a live target. The electronic disabling device includes a battery, an initial step-up voltage circuit, a final step-up transformer (e.g., a plain transformer, an autoformer, etc.), a first electrical output contact, a second electrical output contact, and a power control circuit. The initial step-up voltage circuit is coupled to receive an initial power from the battery. The final step-up transformer provides an output power. The output power is received by the first electrical output contact, and the second electrical output contact receives the output power from the first electrical output through the live target. Here, the power control circuit is coupled between the initial step-up voltage circuit and the final step-up transformer to adjust the power levels of the output power provided by the final step-up transformer.
In one exemplary embodiment of the present invention, a method provides an electronic disabling device with multiple adjustable power levels to immobilize a live target. The method includes: providing an input power from a battery to an initial step-up voltage circuit; stepping-up a voltage of the input power through the initial step-up voltage circuit; adjusting and transforming the input power to an output power having an adjusted power level through a final step-up transformer (e.g., a plain transformer, an autoformer, etc.); and providing the output power having the adjusted power level to an electrical output contact. Here, the adjusted power level of the output power is selected by a user of the electronic disabling device.
A more complete understanding of the electronic disabling device having adjustable output pulse power will be afforded to those skilled in the art and by a consideration of the following detailed description. Reference will be made to the appended sheets of drawings which will first be described briefly.
The accompanying drawings, together with the specification, illustrate exemplary embodiments of the present invention, and, together with the description, serve to explain the principles of the present invention.
In the following detailed description, only certain exemplary embodiments of the present invention are shown and described, by way of illustration. As those skilled in the art would recognize, the described exemplary embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not restrictive.
There may be parts shown in the drawings, or parts not shown in the drawings, that are not discussed in the specification as they are not essential to a complete understanding of the invention. Like reference numerals designate like elements.
Referring to
In operation, an electrical charge which travels into the contact 50 is activated by squeezing the trigger. The power for the electrical charge is provided by the battery 10. That is, when the trigger is turned on, it allows the power to travel to the initial step-up voltage circuit 20. The initial step-up voltage circuit 20 includes a first transformer that receives electricity from the battery 10 and causes a predetermined amount of voltage to be transmitted to and stored in a storage capacitor through a number of pulses. Once the storage capacitor stores the predetermined amount of voltage, it is able to discharge an electrical pulse into the final step-up transformer 30 (e.g., a second transformer and/or autoformer). The output from the final step-up transformer 30 then goes into the first contact 50. When the first and second contacts 50, 60 contact a live target, charges from the first contact 50 travel into tissue in the target's body, then through the tissue into the second contact 60, and then to a ground. Pulses are delivered from the first contact 50 into target's tissue for a predetermined number of seconds. The pulses cause contraction of skeletal muscles and make the muscles inoperable, thereby preventing use of the muscles in locomotion of the target.
In one embodiment, the shock pulses from an electronic disabling device can be generated by an oscillator such as a classic relaxation oscillator that produces distorted saw-tooth pulses to the storage capacitor. An electronic disabling device having the relaxation oscillator is shown as
Referring to
In addition, a secondary coil 120 of the inverter transformer T1 between PAD5 and PAD6 is connected to a pair of diodes D4 and D5 that form a half-wave rectifier. The pair of diodes D4 and D5 are then serially connected with a spark gap 130 and then with a primary coil 140 of the output transformer T2. The primary coil 140 of the output transformer T2 is connected between PAD7 and PAD8. The spark gap 130 is selected to have particular ionization characteristics tailored to a specific spark gap breakover voltage to “tune” the output of the shock circuit.
In more detail, when sufficient energy is charged on a storage capacitor, a gas gap breaks down on the spark gap 130 such that the spark gap 130 begins to conduct electricity. This energy is then passed through the primary coil 140 of output or step up transformer T2.
However, the present invention is not limited to the above described exemplary embodiment. For example, an embodiment of an electronic disabling device can include a digital oscillator coupled to digitally generate switching signals or an independent oscillator 210 as shown in
In the disabling device of
In more detail, the primary coil 240 of the inverter transformer T1′ is energized as current flows through the coil 240 from PAD10 to PAD11 as the switch (or transistor) 250 is turned ON. The independent oscillator 210 is coupled to the switch 250 (e.g., at the base or the gate of the switch 250) to turn the switch 250 ON and OFF. A secondary coil 260 of the inverter transformer T1′ between PAD12 and PAD13 is connected to a full-wave rectifier 270. The full-wave rectifier 270 is then serially connected with a spark gap 280 and then with a primary coil 290 of the output transformer T2′. The primary coil 290 of the output transformer T2′ is connected between PAD14 and PAD15.
In operation, the oscillator 210 creates a periodic output that varies from a positive voltage (V+) to a ground voltage. This periodic waveform creates the drive function that causes current to flow through the primary coil 240 of the transformer T1′. This current flow causes current to flow in the secondary coil 260 of the transformer T1′ based on the turn ratio of the transformer T1′. A power current from the battery source 230 then flows in the primary coil 240 of the transformer T1′ only when the switch 250 is turned on and is in the process of conducting. The full wave bridge rectifier 270 then rectifies the voltage from the power source 230 when the switch 250 is caused to conduct.
In view of the foregoing, electronic disabling devices with high powered shocks can be formed. However, the propriety of forming weapons capable of producing such high powered shocks may be in question because the enhanced shocks may increase the weapons lethality, especially where circuits operating at a fraction of the power ranges that can be achieved by these disabling devices (e.g., at power levels as low as 1.5 watts and 0.15 joules per pulse at ten pps) can completely disable most test subjects. In addition, some seventy deaths have occurred proximate to use of such weapons. As such, using these weapons at high power may run contrary to the idea that electronic disabling devices are intended to subdue and capture live targets without seriously injuring them.
In accordance with an embodiment of the present invention, an electronic disabling device is provided with multiple selectable power levels in one device package. This would allow a user of the electronic disabling device to start with a low power setting (e.g., the lowest power setting) and if the power was not effective, incrementally increase the power until it was effective. This adds a level of safety such that the user does not apply a power level to a live target that might possibly be unsafe to that particular individual.
Referring to
In more detail, the switching device 385 would be controlled by the additional control logic 390 added to the circuit 320 of the electronic disabling device. The additional control logic 390 allows a control input from a user such that the output pulse power of the electronic disabling device can be adjusted by either switching in or switching out the parallel load 387 to the primary coil 370 of the final step-up transformer 330.
Referring to
In more detail, the electrical switching devices 485a, 485b, and 485c allow the primary coil 470 to be shortened using the first, second, and third taps 470a, 470b, and 470c of the primary coil 470 and connecting them to the first, second, and third nodes (or a ground) 480a, 480b, and 480c, respectively. This can effectively reduce the number of windings in the primary coil 470 such that a smaller step-up voltage can be obtained on a secondary coil 475 connected with the first and second electrically conductive output contacts 450 and 460. Any number of taps can be added to the primary winding, and the present invention is not thereby limited by the embodiment of
In more detail, an energy from the bridge rectifier 580 of the initial step-up voltage circuit (e.g., a full-wave bridge rectifier circuit having at least four diodes) is initially used to charge up one plate of the storage capacitor C1. The spark gap SG1 fires whenever the voltage of the storage capacitor C1 reaches a fixed breakdown voltage of the spark gap SG1, and the stored energy discharges through the primary coil 570. In addition, because the storage capacitor C1 and the primary coil 570 are connected to create a tank circuit, as the capacitor C1 discharges, the primary coil 570 will try to keep the current in the circuit moving, so it will charge up the other plate of the capacitor C1. Once the field of the primary coil 570 collapses, the capacitor C1 has been partially recharged (but with the opposite polarity), so it discharges again through the primary coil 570. As such, the sinusoidal output waveform as shown in
Alternatively, as shown in
In more detail, the spark gap SG1′ and the storage capacitor C1′ of
Referring to
Referring to
In view of the forgoing,
While the invention has been described in connection with certain exemplary embodiments, it is to be understood by those skilled in the art that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications included within the spirit and scope of the appended claims and equivalents thereof.
This application claims priority to and the benefit of U.S. Provisional Application No. 60/655,145, filed on Feb. 22, 2005, and U.S. Provisional Application No. 60/657,294, filed on Feb. 28, 2005, the entire contents of both of which are incorporated herein by reference.
Number | Name | Date | Kind |
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3803463 | Cover | Apr 1974 | A |
5588398 | Allen et al. | Dec 1996 | A |
6636412 | Smith | Oct 2003 | B2 |
7152990 | Kukuk | Dec 2006 | B2 |
Number | Date | Country | |
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20080297970 A1 | Dec 2008 | US |
Number | Date | Country | |
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60657294 | Feb 2005 | US |