Projectile and firearm system
AssigneeCrossbullet, LLC
InventorsPaul K. Maurer, Brett E. Maurer, Todd F. Maurer, Paul Della Torre, Robert Tuchrelo, Nathan E. Smith, Richard T. Aab
Life of this patent
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Abstract
A cartridge is disclosed with a casing and a projectile, wherein external ballistic stability is provided by a center of pressure of the projectile being rearward of a center of mass of the projectile. The projectile includes flight control surfaces that cooperate with the bore of a barrel without requiring rifling or sabots. The projectile can include fin configurations that cooperate with the bore to form a bearing surface with the bore.
Claims20
A cartridge for a firearm having a barrel, the barrel defining a bore, the cartridge comprising:
- (a) a projectile having (i) an elongate body portion defining a front of the projectile and the elongate body portion extending along a longitudinal axis, the elongate body portion having a transverse dimension configured to contact the bore, and (ii) a tail portion defining a rear of the projectile, the projectile defining a plurality of longitudinal segments, the plurality of longitudinal segments including a first longitudinal segment and a second longitudinal segment, wherein the first longitudinal segment is longitudinally intermediate the front of the projectile and the second longitudinal segment,
- the first longitudinal segment having a first density and the second longitudinal segment having a different second density, and wherein the first density is greater than the second density;
- and
- (b) a casing coupled to the projectile, wherein the body portion and the tail portion are colinearly disposed along the longitudinal axis and define a projectile center of pressure and a projectile center of mass, the projectile center of pressure being longitudinally intermediate the rear end of the projectile and the projectile center of mass.
A cartridge for a firearm having a barrel defining a bore, the cartridge comprising:
- (a) a projectile extending along a longitudinal axis and configured to pass through the bore, the projectile including a first longitudinal segment, a second longitudinal segment, and a third longitudinal segment, wherein at least 50% of a cross sectional area in the first longitudinal segment comprises a first material, wherein at least 50% of a cross sectional area in the second longitudinal segment comprises a second material, and at least 50% of a cross sectional area in the third longitudinal segment comprises a third material;
- and
- (b) a casing coupled to the projectile, wherein the first longitudinal segment, the second longitudinal segment, and the third longitudinal segment are colinearly disposed along the longitudinal axis and define a projectile center of pressure and a projectile center of mass, the projectile center of pressure being longitudinally intermediate a rear end of the projectile and the projectile center of mass.
A cartridge for a firearm having a barrel defining a bore, the cartridge comprising:
- (a) a projectile having (i) an elongate body portion defining a front of the projectile and the elongate body portion extending along a longitudinal axis, the elongate body portion having a transverse dimension configured to engage the bore, and (ii) a tail portion defining a rear of the projectile, the projectile having a cross sectional mass distribution perpendicular to the longitudinal axis, wherein the cross sectional mass distribution is asymmetric relative to the longitudinal axis;
- and
- (b) a casing coupled to the projectile, wherein the projectile is colinearly disposed along the longitudinal axis and defines a projectile center of pressure and a projectile center of mass, the projectile center of pressure being longitudinally intermediate the rear of the projectile and the projectile center of mass.
Dependencies are inferred from the claim text.