Patent ID: 11867492
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 11:
12. An ammunition cartridge comprising:
a composite shell casing having a generally tubular outer member having an open forward end forming the forward end of the casing, an open rearward end forming the rearward end of the casing, and a central passage extending therebetween, the central passage having a forward end and a rearward end, with a circumferentially extending, forwardly and inwardly facing seat in the rearward end of the central passage, and an extractor groove in the outer member adjacent the rearward end, defining a rim at the rearward end of the outer member; an inner member having a forward end and a rearward end and disposed in the rearward end of the central passage of the outer member, the inner member comprising a first forwardly facing cup-shaped portion, and a second, rearwardly facing cup-shaped portion opening to the open rearward end of the outer member with the rearward end of the inner member being substantially flush with the rearward end of the outer member, forming a part of the rearward end of the cartridge, and a circumferentially extending downwardly and rearwardly facing shoulder on the exterior of inner member engaging the seat in the central passage of the outer member;
a primer disposed in the second, rearwardly facing cup-shaped portion;
propellant disposed in the first forwardly facing cup-shaped portion; and
a bullet disposed in the open forward end of the outer member.