Patent ID: 8904941
Filing Date: 2014-12-09
Classification: F42B

Abstract:
1. An ammunition comprising: a case having an opening portion formed at a front end thereof and a propellant chamber formed to be filled with a propellant therein; a primer installed in the case to explode any propellant filled in the propellant chamber of the case; a bullet which is separately fitted in the case and includes a body portion to seal the opening portion and a streamlined tail portion extending rearward from the body portion to minimize air resistance when the bullet is shot; and a wad separately mounted on the streamlined tail portion of the bullet to apply a thrust force to the bullet when the propellant is exploded, wherein the streamlined tail portion includes a generally frustoconical circumferential surface contiguous with the body portion, a horizontal cylindrical surface formed on a middle portion of the streamlined tail portion, an annular vertical surface extending radially outward from one end of the cylindrical surface and extending radially inward from one end of the circumferential surface, and a generally conical tail surface extending to a rear end of the bullet, and the wad includes a pressing portion having a through hole in which the cylindrical surface of the bullet is inserted, a coupling surface abutting the vertical surface of the bullet, and a pressing surface extending from the through hole in a direction radially outward from the cylindrical surface of the bullet; the wad further including a cover portion having an inner peripheral surface which extends from the coupling surface of the pressing portion toward the body portion of the bullet to cover a part of the circumferential surface of the streamlined tail portion of the bullet, and an outer peripheral surface which extends from an outer periphery of the pressing portion substantially parallel to the cylindrical surface of the bullet.