Abrégé

The invention concerns a sight support (10) for a projectile launcher such as a grenade launcher, typically a 40mm grenade launcher. The sight support has a first member (12) arranged to be mounted on the projectile launcher and a second member (15) which is connected pivotally to the first member. The second member is arranged to support a sight and there is a worm drive (26) acting between the first and second members to pivot them towards and apart from one another. With this arrangement the inclination of the launcher is varied, thereby varying the range of a launched projectile, by operating the worm drive.

Classes IPC  ?

• F41G 1/44 - Dispositifs de réglage à niveau à alcool, p. ex. pour corriger l'inclinaison
• F41G 1/48 - Appareils de visée pour utilisations particulières pour lancer des grenades au moyen de fusils

Abrégé

The invention concerns 40mm grenades launched from grenade launchers that operate with a high pressure/low pressure propulsion system, and has as its objective the provision of a 40mm grenade that has a greater range than previously known 40mm grenades without any substantial increase in secondary chamber pressure. In accordance with the invention this is achieved by increasing the volume of secondary chamber to at least 35cm3 and selecting the propellant charge in the primary chamber to generate a maximum pressure in the secondary chamber not exceeding 16MPa.

Classes IPC  ?

• F42B 8/20 - Grenades pour mortiers
• F42B 8/18 - Grenades à fusil
• F42B 5/02 - Cartouches, c.-à-d. projectile et douille avec charge propulsive formant un tout
• F42B 5/16 - Cartouches, c.-à-d. projectile et douille avec charge propulsive formant un tout caractérisées par la composition ou les dimensions géométriques ou la forme de la charge propulsive ou de la poudre
• F42B 5/26 - Douilles

Abrégé

The invention concerns an advance mechanism for a multi-shot projectile launcher, typically a 40mm grenade launcher. The mechanism has an advancing means for advancing rounds which are to be fired sequentially into a firing position for firing, and a locking means (42, 54) for locking the advancing means when each shot is at the firing position. In addition, an unlocking means (20) is provided which is operated by the recoil of the launcher when a round is fired to release the locking means (42, 54) and thereby allow the advancing means to advance the next successive round to the firing position. This avoids the problem with conventional systems that a portion of the gas pressure generated by firing the round is used to drive the advance mechanism and is then not available to propel the round.

Classes IPC  ?

• F41A 9/27 - Alimentation en munitions sans bande utilisant un chargeur ou un magasin mobiles comme dispositif d'alimentation utilisant un chargeur du type à tambour rotatif dans des armes à feu du type revolver