Firearm with an expansion chamber with variable volume

Details Firearm with an expansion chamber with variable volume Firearm with an expansion chamber with variable volume

F - Mech Eng,Light,Heat,Weapons

41

A

F41A 1/06 (2006.01) F41A 21/28 (2006.01)

Patent

CA 2291073

Improvement to firearms suitable for utilisation with different types of ammunitions, in conditions of absolute safety, said firearm comprising an expansion chamber (10) that communicates with barrel (1) of the firearm through at least one connecting hole (14), a front and a back calibration screw (13, 12), for increasing the volume available to the expansion of combustion gases. Said hollow expansion chamber (10) is located in the lower back part (9) of the barrel (1), (or possibly in its upper part, in parallel to it); said expansion chamber (10) being equipped with an internal threading (11) which is capable of engaging itself to back calibration screw (12) in the distal back part, and a further calibration screw (13), which can be manually operated by a threaded knob (13a), located in the front part.

L'invention concerne une amélioration apportée à des armes à feu pouvant être utilisées à l'utilisation avec différents types de munitions, dans des conditions de sécurité absolue. Ladite arme à feu comprend une chambre d'expansion (10) qui communique avec le canon (1) par au moins un orifice de liaison (14), deux vis de réglage avant et arrière (13, 12) permettant d'augmenter le volume disponible pour la détente des gaz de combustion. Ladite chambre d'expansion creuse (10) est située dans la partie inférieure arrière (9) du canon (1) (ou éventuellement dans sa partie supérieure, parallèlement à celle-ci). Elle (10) est dotée d'un filetage interne (11) venant en prise avec la vis arrière (12) située dans la partie distale arrière et d'une deuxième vis de réglage (13) qui est actionnée manuellement par une molette (13a) située dans la partie avant.

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