US 11,702,912 B2
Shaped charge and method of modifying a shaped charge
Michael John Hinton, West Malling (GB); Philip Duncan Church, Bexleyheath (GB); Richard Gordon Townsley, Tonbridge (GB); and Peter John Gould, Bristol (GB)
Assigned to QINETIQ LIMITED, Hampshire (GB)
Filed by QINETIQ LIMITED, Hampshire (GB)
Filed on Apr. 13, 2021, as Appl. No. 17/229,093.
Application 17/229,093 is a continuation of application No. 16/704,524, filed on Dec. 5, 2019, granted, now 11,002,118.
Application 16/704,524 is a continuation of application No. 14/651,829, granted, now 10,533,401, issued on Jan. 14, 2020, previously published as PCT/EP2013/076578, filed on Dec. 13, 2013.
Claims priority of application No. 1222474 (GB), filed on Dec. 13, 2012.
Prior Publication US 2021/0230985 A1, Jul. 29, 2021
Int. Cl. E21B 43/117 (2006.01); F42B 1/036 (2006.01); F42B 1/028 (2006.01)
CPC E21B 43/117 (2013.01) [F42B 1/028 (2013.01); F42B 1/036 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of manufacturing a shaped charge liner for use with a separate and non-unitary charge case, the method comprising:
configuring a cylindrically shaped lip member to engage the charge case, such that one end of the lip member defines a planar face having a diameter and an opposite end of the lip member defines a bottom face, and such that a concavity extends between the planar and bottom faces of the lip member; and
forming a projecting section so as to be defined by side walls projecting from the planar face of the lip member to define a linear apex end at a location that is spaced furthest from the planar face in a direction along a main liner axis that passes through the apex end and the lip member, such that the side walls have both inner surfaces and outer surfaces, wherein a maximum width of the outer surfaces at an end of the projecting section opposite the apex end extends in a direction perpendicular to the main liner axis and is less than the diameter of the planar face of the lip member such that flat surfaces are defined on the planar face of the lip member between all portions of the end of the projecting section and an outer perimeter of the lip member, the projecting section being rotationally symmetrical about the main liner axis such that the projecting section has discrete rotational symmetry about the main liner axis, a cross section of the projecting section in a plane perpendicular to the main liner axis defining an obround shape.