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[0001] The present invention relates to a method according to the preamble of claim 1 for expanding a bullet and to a bullet according to the preamble of claim 2. This type of bullet is used especially in hunting or other type of shooting, in which the expansion of the bullet is important.
[0002] It is known per se to use partially jacketed and strongly expanding bullets in hunting. The hunting laws and decrees in many countries even require this.
[0003] However, there are significant drawbacks in the prior art. In bullets according to known embodiments, the bullet point begins to strongly expand immediately the bullet hits its target, for example the skin of a game animal. This action of the bullet does, however, often cause the surface muscles of the game animal to crush. As a result, this damage caused by the bullet makes part of the felled game animal inedible.
[0004] In addition to this drawback, the bullets on the market also often have a very narrow operating range in view of their rate of travel. This means that a bullet shot at a lower rate of travel does not open properly when it hits the target, but on the other hand, higher rates of travel make the bullet burst into pieces as it hits the target. In both cases, the operation of the bullet results in that the animal dies slowly.
[0005] It is thus an object of the present invention to develop a method of such structure, and a bullet utilizing the method, that a completely new solution is provided to the above-mentioned problems caused by the prior art.
[0006] This object is achieved by providing the method for expanding a bullet and the bullet implementing this method with the characteristics defined in the claims of this invention. More precisely, the product according to this invention is mainly characterized by what is stated in the characterizing parts of claims 1 and 2.
[0007] Preferred embodiments of the invention are described in the dependent claims.
[0008] The basic idea of the invention is to provide a bullet body made of copper or some other soft, but high-tensile metal and having a hollow cavity or recess. A point piece made of plastic or the like can be arranged in this hollow space. The specific design of the body and the point piece arranged in the hollow space produces a bullet with steady flight properties, but which expands effectively when it hits the target.
[0009] The method and bullet of the present invention are suitable for use both in hunting and in other shooting. The bullet is also suitable for both rifle and pistol shooting.
[0010] The terms ‘up’, ‘down’, ‘above’, ‘below’ and so on illustrate the features of the invention in the directions of the bullet of the invention as it is shown in the attached figures.
[0011] In the following, some of the preferred embodiments of the invention are described in greater detail with reference to the attached drawing, in which
[0012]
[0013]
[0014]
[0015] FIGS.
[0016] In the following, a few preferred embodiments of the present method and bullet are described with reference to the above-mentioned figures. The bullet then comprises the structural parts marked with reference numbers in the figures that correspond to the reference numbers used in this description.
[0017] The present method for expanding the point of a bullet then preferably comprises a bullet described later in more detail and having a substantially cylindrical body
[0018] Conventionally, force action to turn the point
[0019] By correctly selecting the filling agent and bullet materials, a momentary sealing is provided in the point
[0020] The extent and rate of the expansion of the bullet can be significantly adjusted by selecting a different length and/or diameter for the cavity. The shape of the sealing surface and the material of the bullet body can also be used to influence the expansion of the bullet.
[0021] Attached
[0022] This cavity
[0023] As shown in the figure, a sealing surface
[0024] Attached
[0025] In the embodiment of
[0026] Because the point piece in this embodiment of
[0027] Finally, attached
[0028] The sealing surface
[0029] The present bullet may naturally also comprise any obvious combination of the presented embodiments.
[0030] When the present bullet is shot, the point piece
[0031]
[0032] Thus, the present bullet provides an inlet wound with only a little crushing and the transfer of the high kinetic energy of the bullet to the inner organs.
[0033] It will be understood that the above description and the related figures are only intended to illustrate the present solution. The solution is thus not restricted to the embodiment described above or in the claims, but many modifications and variations possible within the scope of the idea disclosed in the attached claims will be apparent to a person skilled in the art.