초록 ▼

A training cartridge has a plastic projectile or plastic dummy projectile wherein the projectile or dummy projectile is integrally molded on a synthetic resin sleeve open at the rear end. The sleeve is inserted in a cartridge case of metal open at its front end. The cartridge case with case shoulder

A training cartridge has a plastic projectile or plastic dummy projectile wherein the projectile or dummy projectile is integrally molded on a synthetic resin sleeve open at the rear end. The sleeve is inserted in a cartridge case of metal open at its front end. The cartridge case with case shoulder and case neck formed thereon is made to be open also at the rear end so that the synthetic resin sleeve can be inserted from the rear end into the cartridge case in close contact with the inner wall thereof. A separate metallic bottom piece is inserted into the rear end of the cartridge case, sealing the case tightly toward the rear.

대표청구항 ▼

1. A training cartridge equipped with a synthetic resin projectile comprising a cylindrical metal cartridge case which is open at both ends, a synthetic resin projectile integrally molded onto a synthetic resin sleeve and a separate metal closure member; said synthetic resin sleeve being open at its

1. A training cartridge equipped with a synthetic resin projectile comprising a cylindrical metal cartridge case which is open at both ends, a synthetic resin projectile integrally molded onto a synthetic resin sleeve and a separate metal closure member; said synthetic resin sleeve being open at its rear end and being inserted into the cartridge case through one end thereof; said cartridge case having a preformed case shoulder and case neck at the other end; said synthetic resin sleeve being in close contact with said case shoulder, said case neck and an inner wall of the cartridge case and being held therein by means of the separate metal closure member inserted in the other end of the cartridge case and firmly joined to the cartridge case; said synthetic resin sleeve being integrally molded the projectile at a rear end of the projectile; the cartridge case being extended up to the rear end of said projectile; and the case neck, which is at an open end of the cartridge case, being flush with the rear end of the projectile whereby clean separation of the projectile from the sleeve is achieved upon firing of the training cartridge. 2. A training cartridge according to claim 1, wherein the synthetic resin sleeve is held in position by being supported toward the front on the case shoulder and at the rear by the separate metal closure member, said closure member being in contact at its front end with a rear end of the synthetic resin sleeve. 3. A training cartridge according to claim 2, wherein the separate metal closure member is joined to the cartridge case by a groove arrangement produced by crimping a groove into a portion of the case surrounding an inwardly extending flange of said separate metal closure member. 4. The training cartridge according to claim 1, wherein the case is made of a metal selected from the group consisting of brass, steel and aluminum. 5. The training cartridge according to claim 1, wherein the synthetic resin sleeve is formed of polypropylene or polyethylene. 6. The training cartridge according to claim 1, wherein said sleeve has a solid projectile formed at the front end followed towards the rear end with a molded-on neck portion, a shoulder portion, and a portion defining a hollow chamber for propellant powder. 7. The training cartridge according to claim 6, wherein said separate metal closure member is provided with a primer means for effecting ignition of propellant powder contained within said hollow chamber of said sleeve.