Granted Patent B2

US 12,264,903 · App. 18/372,270 · Granted Apr 1, 2025

Inventor: Albert Gaide (Monnaz, CH)

Assignee: Rabuffo SA

F42B5/16B21K21/04F42B5/10F42B5/285F42B10/04F42B33/00F42C19/0826F42C19/083

Abstract

Claims (3)

1. A tool mechanism for forming a rigid casing of an ammunition cartridge, the casing comprising a base and a tubular sleeve, comprising a tool insert assembly having a portion with a shape corresponding to an internal shape of the cartridge casing, the tool insert assembly formed of at least two parts including a shaping insert and a support pin that slidably inserts into a central passage of the shaping insert, the shaping insert comprising a radially compressible body portion that allows the shaping insert to move elastically radially inwardly when the support pin is removed.

2. The tool mechanism according to claim 1 , wherein the support pin comprises a bore finishing tool portion having cutting edges to machine an inside diameter of a neck portion of the tubular sleeve upon withdrawal of the support pin.

3. A tool mechanism for forming a rigid casing of an ammunition cartridge, the casing comprising a base and a tubular sleeve, the tool mechanism configured to form longitudinal grooves in the tubular sleeve to increasing buckling resistance, comprising a swaging operation that generates longitudinal grooves in a flat metal band and a folding operation to fold the metal band into a tube, a longitudinal seam of the tube being subsequently welded.

Assignments (1)

Priority Claims (3)

Continuity (3)

References Cited (89)