Patent ID: 11965721
Assignee: GENERAL DYNAMICS ORDNANCE AND TACTICAL SYSTEMS—CANADA, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. A tracer projectile comprising;
a projectile body having a forward section supporting an ogive, a mid-section supporting a driving band and a base section having a tracer cavity formed therein and an annular groove formed into a rear face of the base section to provide a ring flange surrounding the tracer cavity;
a pyrotechnic charge pressed into the tracer cavity, wherein the pyrotechnic charge is ignitable by burning propellant such that a trajectory of the projectile is visible when fired;
a closure disk assembly having a thin-walled crown covering the tracer cavity, a sidewall extending along an inner surface of the annular groove and a rim extending along an inner face of the annular groove, wherein the ring flange supports the crown on the base section such that the burning propellant ruptures the crown when the projectile is fired; and
a retaining element disposed in the annular groove and engaging the rim for securing the closure disk assembly to the base section over the tracer cavity.