Reusable grenade cartridge

• US 6,832,557 B2
• Filed: 01/27/2003
• Issued: 12/21/2004
• Est. Priority Date: 04/27/2000
• Status: Expired due to Term

• Current Assignee: Comtri Teknik AB
• Original Assignee: Comtri Teknik AB
• Inventors: Torsten, Werner
• Primary Examiner(s): Carone, Michael J.
• Assistant Examiner(s): LOFDAHL, JORDAN M
• Application Number:
  US10/258,483
• Publication Number:
  US 20030136293A1
• Time in Patent Office: 694 Days
• Field of Search: 102/439, 102/447, 102/469, 102/529, 102/430, 102/444
• US Class Current: 102/439
• CPC Class Codes: F42B 5/02 Cartridges, i.e. cases with charge and missile
• CPC Class Codes: F42B 8/10 with sub-calibre adaptor

Abstract

Grenade cartridge adapted to be fired from a firing tube, comprising a projectile, a cartridge and a propellant with primer. The grenade cartridge (1) is rechargeable by having a dividable, two-part cartridge such that a cartridge front portion (3), as seen in the firing direction, is tube shaped and in a first end thereof formed to receive the projectile (2) whereas the other end is formed to be detachably connected with a cartridge rear portion (4), and a separate propellant cartridge (9) with primer is axially supported in opposite directions by the two cartridge portions being mutually connected.

Claims

1. A reusable grenade cartridge for firing projectiles from a firing tube, comprising:

a cartridge front portion adapted to hold a projectile, said cartridge front portion being detachably connectable to a cartridge rear portion;

said cartridge rear portion having an end plane with a wall thickness, a central through hole and an inner wall surface, adapted for supporting a propellant cartridge axially in a direction opposite to a firing direction;

a high pressure chamber, opening into a low pressure chamber that is formed in the cartridge front portion, said high pressure chamber being arranged to receive said propellant cartridge and to support said propellant cartridge axially in the firing direction; and

a propellant cartridge carrying a propellant charge and a primer, said propellant cartridge being formed in the rear end with a radially undercut portion providing a shoulder, said shoulder abutting said inner surface of the end wall and said primer leveling with said end plane of the rear cartridge portion when said undercut portion is received through said central hole, the propellant cartridge being replaceable through separation of the cartridge front portion from the cartridge rear portion.

2. The cartridge of claim 1, wherein the high pressure chamber has an inner wall, the radius of which inner wall is reducing towards the opening into the low pressure chamber of the cartridge front portion.

3. The cartridge of claim 2, wherein the inner wall of the high pressure chamber is formed with a stepwise reducing radius.

4. The cartridge of claim 1, wherein the cartridge front portion is detachably connected to the cartridge rear portion through a threaded engagement.

5. The cartridge of claim 1, wherein the high pressure chamber is formed integrally with the cartridge front portion.

6. The cartridge of claim 1, wherein the high pressure chamber is separately attached to the cartridge front portion.

7. The cartridge of claim 1, wherein a cylinder wall of the cartridge front portion is formed to hold a projectile, said cylinder wall being formed internally for deformation of a contact area of the projectile upon firing.

8. The cartridge of claim 7, wherein the cylinder wall of the cartridge front portion is internally formed for a threaded engagement with the projectile.