Flexible pressure vessel for assembled ammunition casing

Abstract

An ammunition case includes an elongate interior cavity for receiving a propellant and a projectile and extending along a longitudinal axis between a top end and a bottom end, and a bottom corner of the cavity having a reversed radius design supported by a shaped base.

What is claimed is: 
     
         1 . An ammunition case comprising:
 an elongate interior cavity for receiving a propellant and a projectile and extending along a longitudinal axis between a top end and a bottom end; and   a bottom corner of the cavity having a reversed radius design supported by a shaped base.   
     
     
         2 . The ammunition case of  claim 1  wherein a casing encloses the elongate interior cavity, an exterior of the casing deformed in a lower area during manufacturing to exhibit a spring wall section. 
     
     
         3 . The ammunition case of  claim 1  wherein a casing encloses the elongate interior cavity, an exterior of the casing having a pattern of deformations directed inwardly. 
     
     
         4 . The ammunition case of  claim 3  wherein the pattern of deformations are dimples of varying geometries. 
     
     
         5 . The ammunition case of  claim 3  wherein the pattern of deformations are a single row of dimples. 
     
     
         6 . An ammunition case comprising:
 an elongate interior cavity for receiving a propellant and a projectile and extending along a longitudinal axis between a top end and a bottom end; and   a bottom corner of the cavity having a broad radius design supported by a shaped base.   
     
     
         7 . The ammunition case of  claim 6  wherein a casing encloses the elongate interior cavity, an exterior of the casing deformed in a lower area during manufacturing to exhibit a spring wall section. 
     
     
         8 . The ammunition case of  claim 6  wherein a casing encloses the elongate interior cavity, an exterior of the casing having a pattern of deformations directed inwardly. 
     
     
         9 . The ammunition case of  claim 8  wherein the pattern of deformations are dimples of varying geometries. 
     
     
         10 . The ammunition case of  claim 8  wherein the pattern of deformations are a single row of dimples. 
     
     
         11 . The ammunition case of  claim 8  wherein the pattern of deformations are one or more circumferential rings. 
     
     
         12 . An ammunition case comprising:
 an elongate interior cavity for receiving a propellant and a projectile and extending along a longitudinal axis between a top end and a bottom end; and   a bottom corner of the cavity having an angle/radius combination supported by a shaped base.   
     
     
         13 . An ammunition case comprises:
 a case, the case having a wall deformed in a pattern of deformations directed inwardly, enabling a balance of outer profile maintenance for general loading and handling while giving spring characteristics of in an axial direction.   
     
     
         14 . The ammunition case of  claim 13  wherein the pattern of deformations comprises grooves or dimples of varying geometries. 
     
     
         15 . An ammunition case comprising:
 an elongate interior cavity for receiving a propellant and a projectile and extending along a longitudinal axis between a top end and a bottom end; and   having one or more grooves rolled into the sidewall above a bottom corner.