Projectile and firearm system
AssigneeCrossbullet, LLC
InventorsPaul K. Maurer, MD, Brett E. Maurer, Todd F. Maurer, Paul Della Torre, Robert Tuchrelo, Nathan E. Smith, RIchard T. Aab
Life of this patent
Estimating the term…
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 gas check.
Claims20
A projectile for passing through a bore of a barrel, the bore having a bore caliber, the projectile comprising:
- (a) an elongate body portion extending along a longitudinal axis, the elongate body portion having a transverse dimension configured to engage the bore;
- (b) a tail portion defining a rear end of the projectile and including a plurality of radially extending tail fins, the radially extending tail fins having a leading edge longitudinally intermediate the elongate body portion and the rear end of the projectile;
- and
- (c) a stem connecting the elongate body portion and the tail portion, wherein the stem has a stem diameter less than the body diameter;
- wherein the body portion, the tail portion, and the stem are colinearly disposed along a longitudinal axis and define a fixed integral assembly with 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;
- and wherein the rear end and at least a length of the tail portion includes a cavity extending along the longitudinal axis.
A projectile for passing through a bore of a barrel of a firearm, the bore having a bore caliber, the projectile comprising:
- (a) an elongate body portion having a body diameter and a first density, wherein the body diameter is a caliber diameter;
- (b) a tail portion defining a rear end of the projectile and including a plurality of radially extending tail fins, the radially extending tail fins having a leading edge longitudinally intermediate the body portion and the rear end of the projectile;
- and
- (c) a stem connecting the body portion and the tail portion, wherein the stem has a stem diameter less than the body diameter;
- wherein the body portion, the tail portion, and the stem are colinearly disposed along a longitudinal axis and define an integral assembly with 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;
- and wherein each tail fin includes at least two of a radial taper, a longitudinal taper, and a bottom surface.
A projectile for passing through a bore of a barrel, the bore having a bore caliber, the projectile comprising:
- (a) an elongate body portion having a plurality of radially projecting body portion fins, the body portion having a transverse dimension, wherein the transverse dimension is a bore caliber;
- (b) a tail portion defining a rear end of the projectile and including a plurality of radially extending tail fins, the radially extending tail fins having a leading edge longitudinally intermediate the body portion and the rear end of the projectile;
- and
- (c) a stem connecting the body portion and the tail portion, wherein the stem has a stem diameter less than the body diameter;
- and
- wherein the body portion, the tail portion, and the stem are colinearly disposed along a longitudinal axis and define an integral assembly with 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.
Dependencies are inferred from the claim text.