Silencer for a firearm

Abstract

A silencer for a firearm, in particular a repeating weapon, an automatic or semiautomatic firearm, a single or multi-loader, or the like, with an outer tube margining a hollow body of the silencer, an inner tube arranged in the hollow body, which margins a projectile channel on the inside in the radial direction and carries at least one sound-reflecting and/or -absorbing element, such as a sound impact wall with projectile passage opening, wherein the outer tube and the inner tube margin an annular space in which sound-absorbing filler material and/or a sound-absorbing lining are optionally arranged, a front wall facing the firearm with a projectile entry opening and a front end wall facing away from the firearm with a projectile exit opening, wherein at least one exchange opening is formed in the inner tube for a gas exchange between the projectile channel and the annular space and at least one vent opening is additionally formed in the front end wall, in particular at the radial height of the annular space, and the annular space provides a gas communication between the at least one exchange opening and the at least one vent opening.

1 . A silencer for a firearm, in particular a repeating weapon, an automatic or semiautomatic firearm, a single or multi-loader, or the like, with an outer tube margining a hollow body of the silencer an inner tube arranged in the hollow body, which margins a projectile channel on the inside in the radial direction and supports at least one sound-reflecting and/or sound-absorbing element, such as a sound impact wall with a projectile passage opening, wherein the outer tube and the inner tube margin an annular space in which a sound-absorbing filler material and/or a sound-absorbing lining are optionally arranged, a front wall facing the firearm with a projectile entry opening and a front end wall facing away from the firearm with a projectile exit opening, wherein at least one exchange opening is formed in the inner tube for a gas exchange between the projectile channel and the annular space and at least one venting opening is additionally formed in the front end wall, in particular at the radial height of the annular space, and the annular space provides a gas communication between the at least one exchange opening and the at least one venting opening. 
     
     
         2 . The silencer according to  claim 1 , in which the annular space is designed such that in an inside of the annular space, muzzle gas flowing in through the at least one exchange opening can leave the annular space at the at least one venting opening, without having to leave the annular space, and/or the inner tube margins the annular space in that gas flowing into the hollow body reaches the annular space exclusively through the projectile channel and the at least one exchange opening. 
     
     
         3 . The silencer according to  claim 1 , in which the annular space extends substantially barrier free substantially over an entire length of the silencer between the front wall, the front end wall and/or one or more radial walls are arranged in the annular space to divide the annular space into a plurality of annular space compartments in which in particular different filling materials and/or linings are placed, wherein the at least one radial wall is perforated or comprises at least one transition passage between adjacent annular space compartments. 
     
     
         4 . The silencer according to  claim 1 , in which the annular space concentrically completely encircles the inner tube and/or a radial distance between the outer tube and the inner tube is smaller than the radius of the cylindrical inner tube, in particular is smaller than a half, a third, or a fourth of the radius of the cylindrical inner tube and in which the radial distance between the outer tube and the inner tube in circumferential direction and/or in projectile flight direction of the annular space is constant and/or the outer tube and the inner tube is a cylindrical metal tube with a wall thickness of at least 0.5 millimeters (mm) and at the most 10 mm, in particular between 1 mm and 3 mm. 
     
     
         5 . The silencer according to  claim 1 , in which the projectile channel is divided into a plurality of channel compartments and/or in which, in particular, the inner tube forms, in particular in the course of a channel expansion chamber connecting to the projectile entry opening, at least one exchange opening with an at least partially linear opening border, wherein preferably the at least one exchange opening in the area of the channel expansion chamber is designed polygonal, in particular hexagonal, preferably honeycomb cell-shaped, wherein in particular a plurality of rows of exchange openings being displaced in an axial direction are formed in the area of the channel expansion chamber in the inner tube, wherein preferably each of the plurality of rows comprises a plurality of exchange openings being displaced in a circumferential direction, in particular arranged on a same axial height, wherein in particular axially adjacent exchange openings are displaced to axially adjacent rows in the circumferential direction, wherein preferably each of the plurality of exchange openings being formed in the inner tube are equally dimensioned and designed in the area of the channel expansion chamber. 
     
     
         6 . The silencer according to  claim 5 , in which the channel expansion chamber is margined in an axial projectile flight direction by an in particular first sound reflection element with projectile passage opening which is designed as a sound impact plate, in particular an impact sheet, and/or comprises a central section forming a projectile passage opening the central section is funnel-formed tapering to the projectile passage opening, wherein in particular a tapering direction of the central section is opposite to the projectile flight direction, and/or in which a channel intermediate chamber connects to a particular first sound reflection element with projectile passage opening margining the channel expansion chamber in the axial projectile flight direction in which at least a second exchange opening, in particular being identical to the at least one exchange opening formed in the channel expansion chamber, is formed into the inner tube, in particular being identical to the at least one exchange opening in the channel expansion chamber, and/or which is margined by a second sound reflection element with a projectile passage opening in the axial projectile flight direction, wherein in particular the second sound reflection element is formed as a second sound impact plate, in particular a second impact sheet, and/or comprises the central section forming the projectile passage opening which is formed funnel-shaped, in particular tapering to the projectile passage opening, wherein in particular the tapering direction is opposite to the projectile flight direction and/or the second sound reflection element is substantially equally designed to the first sound reflection element. 
     
     
         7 . The silencer according to  claim 1 , in which at least one sound reflection element, such as a sound impact plate, in particular an impact sheet, extending radially to the inside is supported by the inner tube wherein the at least one sound reflection element is provided with a projectile passage opening and/or an additional exchange opening, in particular a third exchange opening, is arranged in the inner tube on the axial height of the sound reflection element which extends axially flight upwards and flight downwards in excess of the sound reflection element with respect to the axial position of the sound reflection element, wherein in particular the sound reflection element is attached to the inner tube, in particular preferably attached via a transition fit or a press-fit, and/or extends in excess of the projectile flight axis towards the second exchange opening in such a way that muzzle gas passing the sound reflection element is deflected radially to the outside in the annular space, wherein in particular the additional exchange opening or third exchange opening is larger, preferably twice as large, than the at least first exchange opening. 
     
     
         8 . The silencer according to  claim 7 , in which the sound-absorbing element and/or the at least one reflection element is preferably removably, in particular exchangably, attached to the inner tube via a dowel pin or a press pin, wherein preferably the dowel pin or press pin is inserted into a suitable recess or bore respectively in the inner tube and optionally also in a support basis of the at least one sound reflection element and/or the sound-absorbing element adjacent to the inner tube, and/or wherein the at least one sound reflection element and/or the sound-absorbing element is firmly inserted into a slit recess of the inner tube in particular according to a transition fit or press-fit. 
     
     
         9 . The silencer according to  claim 1 , in which a channel end chamber being margined by the front end wall is radially margined by the inner tube in said inner tube at least one additional in particular third sound reflection element, such as a sound impact plate, preferably an impact sheet, with the projectile passage opening is provided, wherein preferably three, four, five, or more sound reflection elements, in particular of the same design, are attached in the channel end chamber at the inner tube said sound reflection elements are particularly arranged to each other in an equal axial distance, wherein in particular each of the sound reflection elements comprises a bypass opening adjacent to the projectile passage opening substantially on the radial height of the inner tube which is particularly combined with an exit opening in the inner tube in such a way that muzzle gas is at least partially deflected at each of the sound reflection elements radially to the outside to the bypass opening and at least partially introduced into the annular space via the at least one exchange opening. 
     
     
         10 . The silencer according to  claim 1 , in which the at least one venting opening comprises more than two or three venting openings, preferably four or more venting openings, that are formed into the front end wall which preferably comprises a particularly arc-shaped long hole form, and/or at least one long hole-shaped venting opening comprises a continuous long hole extension in a passage direction thereof, wherein preferably a collective arc line of the at least one venting openings lies on a circuit being concentric to a middle axis of the silencer wherein in particular a constant width of the long hole-shaped venting opening is smaller than a largest cross-sectional dimension of the projectile exit opening and/or a hole width of the long hole hole-shaped venting opening is smaller than one-fifth, one-sixth, or one-seventh of the outer diameter of the outer tube, wherein in particular the particular arc-shaped long hole-shaped venting opening forms more than 10%, 20%, or 30% of the front end wall and/or less than 90% or 80%, preferably between 40% and 80%, is realized by a rigid material, such as metal, of the front end wall. 
     
     
         11 . The silencer according to  claim 1 , in which the inner tube directly connects to an inside of the front end wall encompassing the projectile exit opening such that an entire muzzle gas entering the hollow body of the silencer reaches the projectile channel via the projectile entry opening, and/or is in particular attached gastight to an inside of the front end wall such that the muzzle gas reaches the annular space exclusively via the at least one exchange opening, and/or in which the inner tube extends along the entire axial length extension of the hollow body towards the projectile exit opening, and/or the inner tube is attached gastight to an inner side of the front end wall such that in particular the muzzle gas between the annular space and the projectile channel can exclusively flow back and forth via the at least one exchange opening, and/or in which a ratio between a closed wall surface of the inner tube and a passage cross-section surface of the at least one exchange opening in the front end wall is larger than 1, preferably larger than 2 or 3. 
     
     
         12 . The Silencer according to  claim 1 , in which the sound-absorbing filler material is a porous material, such as a foam-like material, for example a metal foam, or a braid, fleece, knitting, knitted fabric, woven fabric, in particular is formed from a metal or another thermally resistant material.