RU2202086C2 - Electromagnetic safety device for small arms - Google Patents

Abstract

FIELD: military equipment, prevention of unauthorized shooting. SUBSTANCE: electromagnetic safety device has receiver, code identifier and transmitter connected to code receiver and through microswitch to power supply source. Handle of proposed device houses key interacting with microswitch. Armature of electromagnet is coupled to release preventing operation of trigger mechanism of weapon. Transponder is positioned in ring which weapon owner carries on finger. EFFECT: prolonged service life of weapon, reduced sensitivity to interference. 1 dwg

Description

 The invention relates to weapons technology and is intended for protection against unauthorized firing of weapons.

 Known electromagnetic fuse of small arms (see US patent 5016376, CL 42 / 70.11, MKI F 41 A 17/06), containing a power source; a device for detecting a code closing an electric circuit; an encoding microcircuit or “chip” that can be embedded in a ring or embedded under human skin; an encoding device for generating a signal indicating that the holder is authorized to use a weapon, and an electromagnet whose anchor blocks the rotation of the trigger or revolver drum.

 A disadvantage of the known device is that it implements a small number of code combinations, the consequence of which is the simplicity of the key selection and the inability to ensure the uniqueness of each key in the production of weapons in any large quantities. In addition, the design of the known device is highly sensitive to the distance between the pair of encoder - ring - magnet and decoder - magnetically controlled contacts and, therefore, the difference in the shape and size of the hands of different people, moving or rotating the ring on the finger, changing the position of the arms, and also the presence or absence of gloves makes the operation of the decoder, based on the registration of the magnetic field strength in a given narrow range, extremely unreliable.

 Known safety device for small arms (see US patent 5062232, CL 42 / 70.11, MKI F 41 A 17/06), taken as a prototype, containing two power sources; an electromagnet whose anchor is connected to a disconnection device that serves to prevent the trigger from working; a code generator for generating a signal reproduced by the code determining device, and a device for attaching a code generator to the hand of a weapon owner.

 A disadvantage of the known device is that its design does not provide long-term operation of the code generator without replacing small-sized power sources. The instant readiness of the weapon for use for a long time without constant monitoring of power sources is also not guaranteed. And the sensitivity of the known device to radiation falling within its operating range, including radiation that occurs when using other weapons equipped with these devices, makes it impossible to use it where several people need to work together (for example, security and patrol services) . In addition, the design of the known device allows, using the simplest "silencers", to deprive the rightful owner of the weapon the opportunity to bring it into a combat state.

 The essence of the claimed invention lies in the fact that the electromagnetic safety device of small arms, containing a power source, a receiver, a device for recognizing a code, a code generator and an electromagnet, the anchor of which is connected to a disconnector that prevents the trigger from being triggered, is equipped with a transmitter and a microswitch, while the transmitter is connected with a receiver and through a microswitch with a power source, and the code generator is made in the form of a transcoder.

 Using the claimed invention will significantly increase the operating time of the weapon without replacing the power source, because until the weapon is taken in hand, energy from the power source is practically not consumed. The presence of only one power source located in the weapon eliminates the need to monitor the battery also in the transmitter. The design of the claimed invention has a much lower sensitivity to possible interference, including signals during operation of other weapons with a similar system, and provides a large number of possible unique "keys", and also reduces the dependence of the parameters of the "key" on the distance to it. In addition, the claimed device provides a short recognition time without the use of specialized high-performance signal processors and its performance is not affected by the presence of gloves or contamination of the surface of the hands.

 The claimed invention is illustrated in the drawing, which shows a General view of the device in section.

 In the handle 1 of the gun placed the key 2, interacting with the microswitch 3; an electromagnet 4, the anchor of which is connected to the disconnector 5, which prevents the trigger mechanism of the weapon; return mechanism 6; receiver 7; a code recognition device 8, which analyzes the signal from the receiver, and a transmitter 9 connected to the receiver 7 and through a microswitch with a power source 10. The transpoder 11 is located in the ring that the weapon holder carries on his finger.

 The device operates as follows.

 When capturing the handle of the weapon with the hand, the key 2 is pressed. In this case, the return mechanism 6 disengages from the disconnector 5 and the micro switch 3 closes. Power begins to flow to the transmitter, which leads to the creation of an electromagnetic radio frequency field around the handle of the weapon. If there is a ring on the hand, transpoder 11, being in the field of the transmitter, transmits a digital code signal. The receiver 7 extracts the signal of the transpoder 11 and transmits it to the code recognition device 8, which analyzes the code and decides to generate a current pulse in the coil of the electromagnet 4. The anchor of the electromagnet is connected to the disconnector 5 and, moving it, prevents the trigger from working. Depending on the requirements for the weapon, the electromagnet can unlock the initially blocked weapon in the presence of a transponder key or block the originally unlocked weapon in its absence. In the first case, the impossibility of using weapons by an unauthorized user is reliably guaranteed, in the second, the possibility of using weapons when the electronic part of the system fails remains, for example, when the power source is discharged. When you release the handle of the weapon, key 2, pushing up, takes its original position. In this case, the return mechanism 6 is engaged with the disconnector 5, moving it to its original position and thereby preventing the possibility of unauthorized triggering of the trigger mechanism.

Claims (1)

 An electromagnetic safety device for small arms, containing a power source, a receiver, a code recognition device, a code generator and an electromagnet whose anchor is connected to a disconnector that prevents the trigger from being triggered, characterized in that it is equipped with a transmitter and a micro switch, while the transmitter is connected to the receiver and through a micro switch with a power source, and the code generator is made in the form of a transcoder.