Abrégé

A grenade round 10 comprises a projectile 12, a case 14 and a high-low propellant propulsion system 16. The system 16 includes a propellant chamber assembly 30 for holding a propelling charge 32. The assembly 30 comprises a chamber body insert 38 which defines an internal cavity and a base plate insert 42 which closes off the internal cavity. The insert 38 is screwed into the case, while the insert 42 is screwed into the insert 38. The insert 42 defines a circumferential flange 60 which extends beyond and abuts a rim formation of the insert 38. The inserts define a high strength housing for the propelling charge which is able to withstand the high pressures resulting from combustion of the propelling charge. The flange provides a relatively large area for dissipation of energy resulting from combustion of the propelling charge, into the interface between the base plate insert and the case.

Classes IPC  ?

• F42B 5/02 - Cartouches, c.-à-d. projectile et douille avec charge propulsive formant un tout
• F42B 5/285 - Douilles en métal constituées par l'assemblage d'au moins trois éléments
• F42C 19/08 - AmorcesDétonateurs

Abrégé

A grenade round 10 comprises a projectile 12, a case 14 and a high-low propellant propulsion system 16. The system 16 includes a propellant chamber assembly 30 for holding a propelling charge 32. The assembly 30 comprises a chamber body insert 38 which defines an internal cavity and a base plate insert 42 which closes off the internal cavity. The insert 38 is screwed into the case, while the insert 42 is screwed into the insert 38. The insert 42 defines a circumferential flange 60 which extends beyond and abuts a rim formation of the insert 38. The inserts define a high strength housing for the propelling charge which is able to withstand the high pressures resulting from combustion of the propelling charge. The flange provides a relatively large area for dissipation of energy resulting from combustion of the propelling charge, into the interface between the base plate insert and the case.

Classes IPC  ?

• F42B 5/285 - Douilles en métal constituées par l'assemblage d'au moins trois éléments
• F42C 19/08 - AmorcesDétonateurs

Abrégé

A grenade round comprises a projectile 22, a case and a propellant propulsion system. The case has a cylindrical side wall having an open front end to which the projectile is connected. The case is secured to the projectile by frictional and mechanical engagement of a distal end part 54 of the case which is deformed inwardly to engage a circumferential flat abutment face 62 of the projectile adjacent a circumferential sealing groove 56 in which an O-ring seal 58 is seated. The abutment face has a taper angle of no less than 10 degrees relative to a longitudinal axis of the projectile.

Classes IPC  ?

• F42B 5/067 - Montage ou blocage de projectiles dans les douilles de cartouche
• F42B 33/00 - Fabrication de munitionsDémontage de munitionsAppareils à cet effet