Patent ID: 7895787
Filing Date: 2011-03-01
Classification: F41A,Y10T

Abstract:
1. A choke for use with a shotgun, comprising: a body defining a bore with a longitudinal axis therethrough, wherein the body has a longitudinal direction with respect to the longitudinal axis that extends in a distal direction and a proximal direction, wherein the distal direction of the longitudinal direction extends away from the user of the choke when using the shotgun, wherein the proximal direction of the longitudinal direction extends towards the user of the choke when using the shotgun, the body configured for engagement with a shotgun such that the bore is positioned for traversal of a wad and shot therethrough in the distal direction and out of an end of the bore, wherein the body has a circumference, wherein the body has an inner surface and an outer surface, wherein the body defines at least one port for venting gas from the bore that extends from the inner surface of the body to the outer surface of the body, wherein the shape of the port at the inner surface of the body is asymmetrical, wherein the port has a distal end that extends from the inner surface of the body to the outer surface of the body such that the distal end of the port at the outer surface of the body is located further in the distal direction from the user than the distal end of the port at the inner surface of the body such that the port extends in the distal direction from the distal end of the port at the inner surface of the body so as to form a knife-edge that scores the wad as it travels past the knife-edge in the distal direction.