US 10,871,359 B2 · Single seal projectile

Abstract

A projectile (10) for firing from a barrel (12) of a firearm has an elongated tubular body (14) with a leading end (16), a trailing end (18) and a passage (100) extending through the body (14) and opening onto the leading end (16). An insert (102) is disposed in the passage (100). A cavity (20) is formed in the body (14) between the insert (102) and the trailing end (18) for holding a volume of propellant. A seal arrangement (22) is formed on the body (14) and located between and in-board of the leading end (16) and the trailing end (18). The seal arrangement (22) extends circumferentially about body to form a substantial seal against an inner circumferential surface of the barrel (12). A driving band (28) is supported on the body (14) between the seal arrangement (22) and the trailing end (18) and arranged to maintain substantial coaxial alignment of the body (14) of the projectile and the barrel (12) of the firearm while the projectile travels along the barrel (12). The driving band (28) has one or more flow paths (38) that enable fluid communication between opposite axial ends of the driving band (28).

Claims29

Dependent claims

An unfired projectile configured to be fired from a barrel of a firearm, the projectile comprising:

an elongated tubular body having a leading end and a trailing end and a passage extending through the body and opening onto the leading end;
an insert disposed in the passage;
a cavity in the body between the insert and the trailing end;
a volume of propellant held in the cavity for propelling the projectile through a barrel of a firearm;
a seal arrangement formed on the body and located between and in-board of the leading end and the trailing end, the seal arrangement extending circumferentially about body to form a substantial seal against an inner circumferential surface of the barrel;
and
a driving band supported on the body between the seal arrangement and the trailing end and arranged about the body in manner to maintain substantial coaxial alignment of the body of the projectile and the barrel of the firearm while the projectile travels along the barrel, the driving band having one or more flow paths that enable fluid communication between opposite axial ends of the driving band.

4 more elements

An unfired projectile for an ammunition round configured to be fired from a barrel of a firearm, the projectile comprising:

an elongated body having a leading end, an axially aligned trailing end, and an internal cavity extending between the leading end and the trailing end;
a volume of propellant held in the cavity for propelling the projectile;
a seal arrangement formed on the body and located between and in-board of the leading end and the trailing end, the seal arrangement protruding radially from an outer circumferential surface of the body to form a substantial seal against an inner circumferential surface of the barrel;
a driving band supported on the body between the seal arrangement and the trailing end, and wherein the body has a rearward portion that extends from the driving band to the trailing end, the driving band extending circumferentially about the body and having an outer circumferential surface which has a maximum outer diameter arranged to contact at least a portion of the inner circumferential surface of the barrel;
and
one or more flow paths that enable fluid communication across the driving band between the single seal and the rearward portion of the body.

3 more elements

Dependencies are inferred from the claim text.

Single seal projectile

Life of this patent

Single seal projectile

Life of this patent

Abstract

Claims29