초록 ▼

An improved shotgun choke tube or fixed shotgun shot choking system is provided in which the 3-dimensional tightness or compactness of the pattern is achieved by the placement of radial projections within the choke tube at a selected distance from the muzzle, dependent upon the length of the shotgun

An improved shotgun choke tube or fixed shotgun shot choking system is provided in which the 3-dimensional tightness or compactness of the pattern is achieved by the placement of radial projections within the choke tube at a selected distance from the muzzle, dependent upon the length of the shotgun shell being used, in conjunction with varying the dimensions of the projections depending on the nature of the components used in the manufacture of the particular shotgun shell used and the pattern results desired. Widest patterns (which are narrower or tighter than without the use of the choke tube) are achieved when the projections are positioned adjacent to the muzzle and/or with radial projections of minimal area contacting the walls of the wad/cup to retard its exit from the muzzle. Progressively, tighter patterns are achieved by varying the dimensions and increasing the area of the projections coming onto contact with the wad/cup or by placing the radial projections rearwardly or inwardly from the muzzle by an amount of 1/2 of the length of the shot cup portion of the plastic wad/cup carrying the pellets, a full length of the cup portion, or even greater than the full length of the cup portion for maximum tightness. In all cases, length of the shot string is substantially shortened by use of the projections to retard the wad, causing more shot to arrive on target simultaneously, thereby both making the target easier to hit and providing greater striking energy on the target.

대표청구항 ▼

[ We claim as our invention:] [1.] A choke tube for use with a shotgun and a shotgun shell in which shot pellets are carried in a shot wad/shot cup in which the shot cup portion has a predetermined length, comprising:a cylindrical tube having a shotgun barrel attachment portion at a proximal end, an

[ We claim as our invention:] [1.] A choke tube for use with a shotgun and a shotgun shell in which shot pellets are carried in a shot wad/shot cup in which the shot cup portion has a predetermined length, comprising:a cylindrical tube having a shotgun barrel attachment portion at a proximal end, an internal diameter sized to receive the shot wad/shot cup, and a distal muzzle, anda plurality of radial projections extending into said internal diameter a distance in the range 6/1000 inches to 20/1000 inches, said projections having a side adjacent said muzzle being essentially flush with said muzzle and having a side opposite said muzzle being longitudinally spaced from said muzzle, said projections having an angular width, measured along a line perpendicular to a centerline of said tube in a range of 20/1000 inches to 300/1000 inches and a length within said tube a distance in a range of 10/1000 inches to 300/1000 inches.