US 12,442,625 B2
Cartridge case and tool for joining the base piece and case jacket of a multi-part cartridge case
Peter Biedermann, Lyss (CH); and Peter Spatz, Bern (CH)
Assigned to RUAG Ammotec AG, Thun (CH)
Appl. No. 18/246,076
Filed by RUAG Ammotec AG, Thun (CH)
PCT Filed Jul. 5, 2021, PCT No. PCT/EP2021/068537
§ 371(c)(1), (2) Date Mar. 21, 2023,
PCT Pub. No. WO2022/058062, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 102020124559.9 (DE), filed on Sep. 21, 2020.
Prior Publication US 2023/0366661 A1, Nov. 16, 2023
Int. Cl. F42B 5/285 (2006.01); F42B 33/00 (2006.01)
CPC F42B 5/285 (2013.01) [F42B 33/001 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cartridge case for ammunition, comprising:
a rotationally-shaped case jacket configured to receive a projectile, the case jacket having a retaining section; and
an annular base piece configured to receive a primer and the case jacket, the annular base piece having an annular wall adjacent to the case jacket being conically shaped at least in sections with respect to an axis of rotation of the annular base piece,
wherein the retaining section is configured to engage the base piece on a side of the base piece and adapt in shape thereto so that the retaining section engages, at least in sections, behind the annular wall to fasten the case jacket and the base piece to each other and prevent a distancing of the base piece and the case jacket from each other in a direction of the axis of rotation of the annular base piece, the base piece being configured to plastically deform to form the conically-shaped annular wall and the retaining section.