19-08-2021 дата публикации
Номер: US20210254952A1
Принадлежит:
A shotgun shell has a polymer wad with a forward shot cup portion and a rearward propellant cup, the wad in a casing, shot in the shot cup, propellant in the propellant cup, and a primer in a head of the casing. The propellant cup having a plurality of fins extending rearwardly that open to a deployed position upon firing and the shot cup having a plurality of circumferentially spaced axially aligned linear slit segments that permit air to circulate and permit expansion of the shot cup. 138-. (canceled)39. A shotshell cartridge comprising:a casing comprising a head portion and a primer; a forward shot cup portion comprising a forward cup interior,', a hinge region, and', 'a cam surface,', 'the plurality of circumferentially arranged fins extend forwardly from the hinge region defining a prefiring positon, each fin rotatable outwardly and rearwardly at the hinge region upon the wad exiting a barrel when fired and having a deployed position, the fins configured to retain the deployed position after firing, and, 'a rearward propellant cup portion comprising a rearward cup interior, the propellant cup portion comprising an interior surface, a base portion, and a tubular portion, the tubular portion comprising a plurality of circumferentially arranged fins, the plurality of circumferentially arranged fins each comprising, 'a disk, the disk configured to engage cam surfaces on the plurality of fins when the disk is moved axially to provide an outward fin opening force when the cartridge is fired and provides a force to retain the deployed position;, 'a polymer wad positioned in the casing, the wad comprisingpropellant positioned in the propellant cup; andshot positioned in the shot cup portion.40. The shotshell cartridge of claim 39 , wherein the disk is in the shot cup portion of the wad and is configured to move rearward with respect to the wad upon firing claim 39 , driven by the inertia of the shot.41. The shotshell cartridge of claim 39 , the tubular portion of the ...
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