Cartridge case for centerfire ammunition, and centerfire ammunition
AssigneeRuag Ammotec GmbH
InventorsPeter Biedermann, Peter Spatz
Life of this patent
Estimating the term…
Abstract
A cartridge case for centerfire ammunition may include a rotationally shaped casing sleeve for receiving a projectile as well as propellant charge powder, and a separate rotationally shaped bottom piece which is attached to the casing sleeve and has a closed ignition surface to be faced towards a firing pin for ignition of the centerfire ammunition. The closed ignition surface delimits, on the firing pin side, a receiving chamber for an ignition charge. The casing sleeve may have or support an anvil extending in the direction of the ignition surface into the receiving chamber. The ammunition may have a caliber in the range from, for example, 4.6 to 12.7.
Claims19
A cartridge case for centerfire ammunition, comprising:
- a rotationally shaped casing sleeve configured to receive a projectile and propellant charge powder;
- and
- a separate rotationally shaped bottom piece attached to the casing sleeve, the bottom piece including a closed ignition surface configured to be faced towards a firing pin for ignition of the centerfire ammunition, the closed ignition surface delimiting, on the firing pin side, a receiving chamber for an ignition charge,
- wherein the casing sleeve includes or is configured to support an anvil extending in the direction of the ignition surface into the receiving chamber.
A centerfire ammunition comprising:
- a cartridge case including:
- a rotationally shaped casing sleeve configured to receive a projectile and propellant charge powder;
- and a separate rotationally shaped bottom piece attached to the casing sleeve, the bottom piece including a closed ignition surface configured to be faced towards a firing pin for ignition of the centerfire ammunition, the closed ignition surface delimiting, on the firing pin side, a receiving chamber, wherein the casing sleeve includes or is configured to support an anvil extending in the direction of the ignition surface into the receiving chamber;
- and
- an ignition charge received in the receiving chamber and/or a projectile received in the casing sleeve.
A method of manufacturing a bottom piece of a cartridge case, comprising:
- performing a cold forming process on a metal blank to form a hollow casing section closed at a rear side by an ignition surface;
- forming a bottom flange on an exterior of the hollow casing section;
- pressing on an inside surface of the hollow casing section to form a cone section, wherein the cone section expands in a tulip or flower-like manner and has a cone-shaped inner contour;
- and
- pressing the cone-shaped inner contour to form:
- a recess configured to receive a casing sleeve of the cartridge case, and a receiving chamber configured to receive an ignition charge.
Dependencies are inferred from the claim text.