Jul 29, 2025

US12372336 - Liner for a shaped charge and method for manufacturing a liner

A liner for a shaped charge including an inner layer made of a material having a density below 10.5 g/cm 3 , and an outer layer made of a material having a density below 2.0 g/cm 3 , wherein the outer layer is formed directly on the inner layer. In a first state, both the inner layer and the outer layer are compressed towards the symmetry axis (x) of the liner, thereby forming a projectile. In a second state, the inner layer forms a penetration jet of the projectile and the outer layer forms a slug of the projectile. The melting point of the outer layer is above 100° C. The invention also concerns a shaped charge including the liner, a method for manufacturing the liner and a method for detonation of the shaped charge.

Assignee: SAAB AB
Inventors: Marcus Gustafsson, Victor Björkgren
Filing date: 2022-04-19

The patent describes a liner for a shaped charge that consists of an inner layer with a density below 10.5 g/cm³ and an outer layer with a density below 2.0 g/cm³, designed to form a projectile upon detonation. The invention also includes methods for manufacturing the liner and for detonation of the shaped charge, emphasizing the unique properties of the materials used.

Claim 1

A liner, the liner being shaped as a cone, frusto-cone, funnel or trumpet, for a shaped charge comprising an inner layer made of a material having a density below 10.5 g/cm3, and an outer layer made of a material having a density below 2.0 g/cm3, wherein the outer layer is formed directly on the inner layer and wherein in a first state, upon detonation of the shaped charge and collapse of the liner, both the inner layer and the outer layer are arranged to be compressed towards a symmetry axis (x) of the liner, thereby forming a projectile, and in a second state, the inner layer is arranged to form a penetration jet of the projectile and the outer layer is arranged to form a slug of the projectile, wherein the melting point of the outer layer is above 100° C., and the thickness of the outer layer ranges from 0.5 mm to 5 mm.

Google Patents

https://patents.google.com/patent/US12372336

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12372336