Firearm silencer

Abstract

A silencer includes a baffle stack with channels extending along its outer surface for the length thereof to a discharge end of the silencer. The channels are in communication with the baffle stack to allow gas resident in a firearm to which the silencer is attached to escape to minimize the results of a blast resulting by passing the gas through the channels and out from the silencer.

What is claimed is: 
     
         1 . A silencer for a firearm, comprising:
 a silencer body having a first proximate end connectable to an end of a barrel of a firearm, and a second distal end from which can exit a projectile from the firearm when the firearm is fired;
 an opening at the proximate end of the silencer body leading into a passage through a baffle stack within the silencer body which extends to an opening at the second distal end to allow the projectile to enter a silencer at the proximate end to pass through the silencer body and be discharged through the opening at the distal end; 
 a baffle stack within the silencer body comprising a first chamber at the proximate end and comprising ports leading to at least one channel on an exterior surface extending the length of the baffle stack for allowing an initial blast of air from discharge of the firearm to pass through the ports into the channel and through the passage in the baffle stack to be discharged from the silencer; 
 a plurality of baffles containing chambers extending along the baffle stack toward the distal end, for causing a blast of gas from a propellant blast behind the projectile to be redirected in a direction toward the proximate end of the silencer and then discharged from the silencer through the passage and through the ports in the first chamber; 
 an outer tube received about the length of the baffle stack for sealing the baffle stack for containing the initial blast of air passing into the channel to be forced out the distal end of the silencer; and 
 an end cap attached to the distal end of the silencer to hold the outer tube securely on the baffle stack, and said end cap having a central opening to allow the projectile to pass therethrough and at least one gas discharge opening to allow gas to pass from the silencer. 
   
     
     
         2 . The silencer of  claim 1 , wherein said plurality of baffle chambers extending from the proximal end to the distal end are each progressively smaller than the prior baffle chambers extending in the direction of the distal end. 
     
     
         3 . The silencer of  claim 1 , wherein said at least one channel comprises two channels and said ports comprise two sets of ports, each set connecting to a respective channel 
     
     
         4 . The silencer of  claim 1 , wherein a first baffle in a first chamber at the proximate end of the baffle stack is removable and replaceable. 
     
     
         5 . The silencer of  claim 3 , wherein a first baffle in a first chamber at the proximate end of the baffle stack is removable and replaceable. 
     
     
         6 . In a combination firearm and a silencer, comprising:
 a firearm having a silencer connected thereto at the end of a barrel of the firearm;
 the silencer comprising: 
 a silencer body having a first proximate end connectable to an end of a barrel of a firearm, and a second distal end from which can exit a projectile from the firearm when the firearm is fired; 
 an opening at the proximate end of the silencer body leading into a passage through a baffle stack within the silencer body which extends to an opening at the second distal end to allow the projectile to enter a silencer at the proximate end to pass through the silencer body and be discharged through the opening at the distal end; 
 a baffle stack within the silencer body comprising a first baffle chamber at the proximate end and comprising ports leading to at least one channel on an exterior surface extending the length of the baffle stack for allowing an initial blast of air from discharge of the firearm to pass through the ports into the channel and through the passage in the baffle stack to be discharged from the silencer; 
 a plurality of baffles containing chambers extending along the baffle stack toward the distal end, for causing a blast of gas a propellant blast behind the projectile to be redirected in a direction toward the proximate end of the silencer and then discharged from the silencer through the passage and through the ports in the first chamber; 
 an outer tube received about the length of the baffle stack for sealing the baffle stack for containing the initial blast of air passing into the channel to be forced out the distal end of the silencer; and 
 an end cap attached to the distal end of the silencer to hold the outer tube securely on the baffle stack, and said end cap having a central opening to allow the projectile to pass therethrough and at least one gas discharge opening to allow gas to pass from the silencer. 
   
     
     
         7 . The combination firearm and silencer of  claim 6 , wherein said plurality of baffle chambers extending from the proximal end to the distal end are each progressively smaller than the prior baffle chamber extending in the direction of the distal end. 
     
     
         8 . The combination firearm and silencer of  claim 6 , wherein said at least one channel comprises two channels and said ports comprise two sets of ports each set connecting to a respective channel 
     
     
         9 . The combination firearm and silencer of  claim 6 , wherein a first baffle at the proximate end of the baffle stack is removable and replaceable. 
     
     
         10 . The combination firearm and silencer of  claim 8 , wherein a first baffle in a first chamber at the proximate end of the baffle stack is removable and replaceable.