Firearms – Barrels – Choke devices
Patent
1998-06-08
2000-10-10
Jordan, Charles T.
Firearms
Barrels
Choke devices
F41A 2140
Patent
active
061288462
ABSTRACT:
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.
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Leutenegger Larry
Poe Gerald E.
Walker Ronald N.
Buckley Denise J
Inpromark, Inc.
Jordan Charles T.
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