Silencer for a firearm

Abstract

The present invention relates to a silencer for firearms, the silencer comprising a substantially cylindrical outer sleeve and an inner body arranged therein, which inner body at one end is provided with an attachment portion and at an opposite end is provided with a muzzle portion. The inner body is further provided with a number of separate transverse through openings around its circumference and at least a part of its length, thus providing a plurality of walls around its circumference and a solid core in the inner body, a throughgoing longitudinal bore extending through the solid core, wherein each transverse through opening and the throughgoing longitudinal bore are connected by means of at least one channel.

1 . A firearm silencer comprising a substantially cylindrical outer sleeve and an inner body arranged therein, wherein the inner body is provided with an attachment portion and a muzzle portion, wherein a number of separate groups of transverse through openings are provided around the circumference of the inner body at least over a part of the length of the inner body, the traverse through openings of each group forming an angle with each other, thus providing a number of walls around the circumference of the inner body, the number of walls extending in the longitudinal direction of the inner body, and a solid core in the inner body around a center axis of the inner body, which inner body is further configured with a throughgoing longitudinal bore extending through the solid core, wherein each transverse through opening of each group and the throughgoing longitudinal bore are connected by means of at least one channel provided in the solid core, the channels being configured to direct exhaust gases in towards an inner surface of the walls. 
     
     
         2 . A silencer according to  claim 1 , wherein each of the transverse through openings is configured to have the same or different height and/or breadth. 
     
     
         3 . A silencer according to  claim 1 , wherein a first group of the separate transverse through openings arranged closest to the attachment portion is configured with a smaller breadth than a last group of the separate transverse through openings arranged closest to the muzzle portion, the breadth thereby increasing for each successive group of separate transverse through openings. 
     
     
         4 . A silencer according to  claim 1 , wherein the inner body beyond the attachment portion is configured with an internal chamber. 
     
     
         5 . A silencer according to  claim 1  or  4 , wherein the attachment portion is configured with threads. 
     
     
         6 . A silencer according to  claim 1 , wherein the inner body at an end close to the muzzle portion is configured with an abutment shoulder for receiving the cylindrical outer sleeve. 
     
     
         7 . A silencer according to  claim 1 , wherein the at least one channel is configured with an angle extending from the throughgoing longitudinal bore to the transverse through opening. 
     
     
         8 . A silencer according to  claim 1 , wherein the cylindrical, outer sleeve is made of composite materials. 
     
     
         9 . A silencer according to  claim 1  or  8 , wherein the cylindrical outer sleeve on an inner surface is coated with a liner or metal foil. 
     
     
         10 . A silencer according to  claim 9 ,
 wherein the at least one channel is configured leading out towards the plurality of walls provided in the inner body.   
     
     
         11 . A method for providing an inner body in a firearm silencer, wherein the method comprises the following steps:
 to drilling out a number of separate groups of traverse through openings around a circumference of the inner body at least over a part of a length of the inner body, the traverse through openings of each group forming an angle with each other, thus providing a number of walls around the circumference of the inner body, the number of walls extending in the longitudinal direction of the inner body, and a solid core around a center axis of the inner body,   to drilling out a throughgoing longitudinal bore through the solid core, and   to drilling out at least one channel from each of the traverse through openings to the throughgoing longitudinal bore in the solid core, such to provide a communication between these, the channels being configured to direct exhaust gases in towards an inner surface of the walls.