Method for expanding a bullet and a bullet

Abstract

The invention relates to a method for expanding a bullet and to a bullet for implementing the method. The bullet comprises a cylindrical body and a conically convergent point. A cavity filled at least partly with a filling agent is arranged to extend from the point towards the base of the bullet. When such a bullet hits and penetrates a target, force action is directed to the bullet to turn the point of the bullet towards the direction opposite to the direction of travel of the bullet. To slow this, the filling agent is extended outside the cavity in the area of the bullet point. As the bullet with such a cap moves on in the target, the filling agent slowly presses into the cavity guided by the sealing surface releasing the point of the bullet.

1 . A method for expanding the point of a bullet which comprises a substantially cylindrical body and a substantially conically convergent point, 
 from which point a cavity is filled at least partly with a filling agent and is extended towards the base of the bullet,    the bullet when it hits and enters its target has a force action directed by the target to the bullet,    for enhancing an expanding of the bullet the filling agent in the bullet is extended outside the cavity in the area of the point of the bullet in such a manner that the diameter of the filling agent outside the cavity is made larger than the diameter of the cavity, whereby 
 when the bullet hits the target, the filling agent forms together with the point of the bullet a sealing surface on it to prevent foreign elements from entering the cavity,  
 when the bullet enters the target the filling agent presses into the cavity due to the force action between the bullet and the target and guided by the sealing surface,  
 the filling agent pressing into the cavity thus on one hand frees the bullet point for the force action directed to it by the target, and  
 on the other hand, when pressing into the cavity, expands the cavity at its opening to subject the bullet to a strong force action directed to it by the target, and  
 the point of the bullet turns substantially towards the direction opposite to the direction of travel of the bullet.  
   
     
     
         2 . A bullet comprising a substantially cylindrical body and a substantially conically convergent point, 
 from which point a cavity filled at least partly with a filling agent is arranged to extend towards the base of the bullet,    thus cavity is, when penetrating the point of the bullet, arranged to form a sealing surface on it,    the sealing surface comprising a surface positioned at least partly at an angle α in relation to the longitudinal axis of the bullet to form a substantially conical surface descending to the cavity in such a manner that the filling agent in the cavity is arranged to extend on substantially the entire sealing surface up till an outer jacket of the bullet.    
     
     
         3 . A bullet as claimed in  claim 2 , wherein in that the sealing surface comprises a conical surface positioned at an angle α and extending to the outer jacket of the bullet.  
     
     
         4 . A bullet as claimed in  claim 2 , wherein in that the sealing surface comprises a conical surface at an angle α and connected to the outer jacket of the bullet with a surface that is substantially perpendicular to the longitudinal axis of the bullet.  
     
     
         5 . A bullet as claimed in  claim 3 , wherein in that the sealing surface comprises a section parallel to the longitudinal axis of the bullet.  
     
     
         6 . A bullet as claimed in  claim 5 , wherein in that the sealing surface parallel to the longitudinal axis of the bullet comprises a cylindrical surface.  
     
     
         7 . A bullet as claimed in  claim 4 , wherein in that the sealing surface forms an angle a in relation to the longitudinal axis of the bullet and having a size of 10° to 80°.  
     
     
         8 . A bullet as claimed in  claim 7 , wherein in that the angle α is 45°.  
     
     
         9 . A bullet as claimed in  claim 5 , wherein in that the section parallel to the longitudinal axis of the bullet is 0.1 to 2.0 mm in size.  
     
     
         10 . A bullet as claimed in  claim 4 , wherein in that the sealing surface comprises a section parallel to the longitudinal axis of the bullet.  
     
     
         11 . A bullet as claimed in  claim 10 , wherein in that the sealing surface parallel to the longitudinal axis of the bullet comprises a cylindrical surface.  
     
     
         12 . A bullet as claimed in  claim 4 , wherein in that the sealing surface forms an angle α in relation to the longitudinal axis of the bullet and having a size of 10° to 80°.  
     
     
         13 . A bullet as claimed in  claim 12 , wherein in that the angle α is 45°.  
     
     
         14 . A bullet as claimed in  claim 10 , wherein in that the section parallel to the longitudinal axis of the bullet is 0.1 to 2.0 mm in size.  
     
     
         15 . A bullet as claimed in claims  2 , wherein in that the filling agent in the cavity comprises a combination of several materials.  
     
     
         16 . A bullet as claimed in  claim 2 , wherein in that the filling agent fills 15 to 90% of the length of the cavity.  
     
     
         17 . A bullet as claimed in  claim 2 , wherein in that the body of the bullet comprises a combination of several different materials.  
     
     
         18 . A bullet as claimed in claims  2 , wherein in that the body of the bullet comprises copper.