Shotgun choke with integral wad-stopping feature

Abstract

Disclosed herein is a shotgun choke with integral wad-stopping feature for use with an existing shotgun. The choke generally comprises a hollow cylinder having (an) a coupling for securing it to the muzzle end such as an external series of screw threads proximate one end for screw-insertion to the muzzle end of an existing shotgun, and an internal channel defined by an overall taper running from the inserted end to the output end to constrict shotgun pellets passing there through. The wad-stopping feature is accomplished with a series of raised internal projections or steps (raised from the internal walls of the channel), the projections being spaced throughout the tapered channel to retard and separate a traveling wad from the shot when passing there through.

1 . A choke with integral wad stopper for use with an existing shotgun, comprising: 
 a hollow cylinder having a coupling at one end for concentrically securing it to a muzzle end of said shotgun, said cylinder being defined by an internal channel having a an increasingly smaller average internal diameter running away from the coupling end to constrict shotgun pellets passing there through;    a plurality of raised annular projections spaced along said tapered channel to retard and separate wadding from behind said shotgun pellets while passing through said cylinder.    
   
   
       2 . The choke according to  claim 1 , wherein said plurality of raised internal projections each further comprise an internal annular step along said cylinder.  
   
   
       3 . A choke according to  claim 1 , wherein each of said plurality of raised annular projections comprises a sharp edge disposed toward said coupling end of said cylinder.  
   
   
       4 . A choke according to  claim 1 , wherein each of said plurality of raised annular projections comprises a rounded edge disposed toward said coupling end of said cylinder.  
   
   
       5 . A choke according to  claim 2 , wherein each internal step along said cylinder defines a smaller internal diameter within said cylinder.  
   
   
       6 . A choke according to  claim 5 , further comprising a ramp transition between successive internal steps along said cylinder.  
   
   
       7 . The choke according to  claim 1 , wherein said coupling further comprises an external series of screw threads for screw-insertion to the muzzle end of said existing shotgun.  
   
   
       8 . The choke according to  claim 9 , further comprising a textured area along an outer surface of said cylinder to improve gripping while screwing it into the muzzle end of said existing shotgun.  
   
   
       9 . A choke according to  claim 1 , wherein each of said raised annular projections further comprise a ramp transition to a next successive projection, thereby defining a constricting taper running away from said coupling end of the cylinder.  
   
   
       10 . A choke according to  claim 1 , wherein said projections are connected along a spiral pattern.