WO1994002798A1

WO1994002798A1 - Multi-effect bullet for light fire-arms

Info

Publication number: WO1994002798A1
Application number: PCT/ES1993/000064
Authority: WO
Inventors: Luis Fernandez Del Rio
Original assignee: Empresa Nacional Santa Barbara De Industrias Militares, S.A.
Priority date: 1992-07-20
Filing date: 1993-07-19
Publication date: 1994-02-03
Also published as: EP0628784A1; ES2092923A1; ES2092923B1

Abstract

The multi-effect bullet for light fire-arms has a truncated ogival shape and has a core of soft metal material covered, except at the nose, by a shell made of brass rich in copper, which shell is closed by the base and terminated by an edge which delimits a slight concavity of the lead core in the form of a spherical cap whose curve varies according to the calibre of the bullet. The disclosed bullet is characterized in that its effect depends on the nature of the target to which it impinges, traversing obstacles whose resistance may correspond to the resistance of a protection element, and expanding when impinging in a material behaving in a similar way as the human body, said characteristics confering to the bullet qualities which make it appropriate to be used for different purposes, such qualities being a good precision and perforation of armorings and very high detention power.

Description

BULLET FOR SMALL ARMS POLIEFECTOS The ^P resent invention relates to a bullet poliefec- destaca¬ liqeras cough for weapons, whose characteristics give σue reside in its effect depends on the resistance to 5 penetration in the incident white σue.

For short-range combat, an ammunition has been sought with a high detention power that will provide for the disengagement of the contestant. As is well known, the power to detain a person for a .10 ammunition is increased if his remaining energy is fully absorbed by it, for which it is necessary not to go through it. In addition, it is of interest that this ammunition behaves in a totally different way through an obstacle whose resistance may correspond to that of an I-S protection element. In this investigation, optimal results had not been achieved with lead bullets or with semi-closed and similar bullets of various types.

The most outstanding characteristics of the ammunition poiiefeσtos reside in that its behavior depends on the resistance of the target on which it affects, which confers it faculties for its use with very different purposes, such as good precision and perforation of armor and a power of very high detention.

Achieving this duplicity of benefits is 5 being the purpose pursued by the ammunition designers for firearms, which is not used even with the 357 Maqnu ammunition, which even improves the. of .38 Smith í _* Wesson Special, and this despite the fact that it needs initial speeds higher than 475 m / sq, obliq

SUBSTITUTED SHEET use of heavy weapons and large size to withstand the high pressures that are required and facilitate its good aqarre.

In this investigation until now the optimal characteristics of this ammunition had not been achieved, which are:

- be endowed with anti-turbulence effect by not changing its trajectory at the moment of its impact, crossing hard substances well; - deform, considerably and uniformly, when it affects soft substances such as plastic, which have a resistance to penetration similar to that of a human body, expanding much more than those manufactured to the roof, which hinders its penetration, thereby increasing the stopping power of this bullet.

In the development of this invention, it is also being persuaded that the design of the bullet facilitates the feeding of the weapon, while allowing its mass production in automatic machines with an enforceable and controllable quality because, if not, the Production would be significantly more expensive. The convenience of adopting a truncated ogival profile for promoting automatic feeding of the weapon has been experimentally confirmed. Finally, in experiences with an ammunition in which the design had been modified in accordance with the claims in this patent. The bullet also deformed by flattening much practically symmetrically to the impact blocks of plastic-ceramic material, after having crossed a sheet of 1 to 2 millimeters thick, placed in front of it at about 25 centimeters.

The main advantages offered by this ammunition are:

- the principle of its design is applicable to any type of light weapons ammunition with blunt bullets;

- improves the accuracy of known ammunition that persists the same objective and results in a deformation of controlled characteristics;

- avoid the inconvenient problems of the bullets.

On the other hand it is well known that with bare lead bullets the effect achieved with the present registration is achieved, although in a much lower proportion because it has less perforating power, in addition to presenting the following inconvenient qraves:

- They shoot weapons that shoot them in which they produce burrs in the bore and in the level of fixation causing interruptions in the automatic weapon that uses them, which it harms.

- and, which is of fundamental importance, its use in shooting galleries is inadvisable for producing lead gasses, which are of a toxicity. With this patent, a bullet is obtained which, maintaining practically the benefits of the one that will currently exist for small calibres, offers excellent performance as a nearby defense bullet or police This type of design is applicable to any type of similar conventional ammunition, which

- be projected for initial speeds greater than 400 m / sq. ; - has an effective range similar to that of the ammunition of will;

- had a high drilling power for impacting with remaining energy and, finally,

- It has a high stopping power by giving in a short distance to a body, of the characteristics of the plastic-ceramic substances, all its remaining energy.

It can be affirmed that, in order for the projectile to cover the versatile benefits pursued in this endeavor, it is decisive: - that the brass casing, high in copper, whose interior is filled with soft lead, reaches the upper edge of the bullet;

- that said envelope conforms, in the bare part of the lead core, a small concavity shaped like a spherical cap;

- that the weight of the bullet is such that initial velocities greater than 400 m / sq are projected on the shot with projection shells that produce maximum pressures lower than the required safety pressures. We insist that for 1 oqrar the attainment of the desired effects it is of fundamental importance that the edge of the envelope does not produce a clogging that prevents the exit of the lead when colliding with a soft body. The invention, as characterized in the claims, covers the still existing need to have a bullet for a light weapon which, having passed through a shield only pierceable by bullets designed for ammunition, expands further, and in a way more regular, than currently known self-defense ammunition.

With the help of the attached figure, an example of the execution of the bullet polyefects for light weapons is described below, meaning that the principle of its constitution is the same for the different calibers and types of bullets in which it has application.

The cartridge (1) has an external final confiquration that is truncated ogival and coincides exactly with that of the usual ammunition of the weapons for which it is destined to the zone (4), in which the crimping pressure between the sheath is applied (2) and the shell of the bullet (5), maintaining the extension that constitutes the bullet within the profile of the ammunition used until now, with which the existing weapons may be used, not requiring special weapons. The interior of the sheath (2) contains the projection carqa (3), which should be the optimum one, that is, the one with which the maximum initial speed that can be achieved with a specific powder is achieved. Currently there are gunpowder with which the initial speeds above 400 m / sα are reached. , which we have indicated were required. As far as the projectile is observed in the tiqura that the envelope (5) surrounds the lead core (6) to the tip of the bullet, where it ends at the edge (7) constituting the edge of the cavity (8) into a spherical cap. This type of flat-bottomed bullet improves accuracy.

Claims

CLAIMS.

The present invention will fall upon the following claims:

one§. - Bullet polyetects for light weapons of those constituted by a core of soft metallic material located inside a copper-rich brass envelope that covers it except for the tip, characterized in that the copper-rich brass envelope is truncated ogival reaching the top edge of the bullet; the edge of said envelope ends in an edge presenting the lead core with a small concavity shaped spherical cap, whose arrow varies according to the caliber of said bullet.