US12535280 - Small firearms and method of operating small firearms
The patent describes a small firearm designed with a receiver, barrel, and action that allows for the controlled movement of a cartridge case during operation. It features a guide surface within a locking space that limits the entry of the cartridge case and facilitates its exit, enhancing the firearm’s reliability.
Claim 1
1 . A small firearm, extending along a longitudinal direction, a width direction, and a height direction, the small firearm comprising: a receiver; a barrel including a barrel bore axis; an action including a bolt head; and a guide surface, wherein the receiver is configured for (i) at least indirectly receiving the barrel including a locking mechanism area, a chamber, a guide area, and a muzzle arranged successively in the longitudinal direction, and (ii) at least indirectly receiving the action movably arranged within the receiver along the longitudinal direction from an open position to a closed position, wherein the bolt head includes a breech face, an extractor, an ejector, and at least one locking piece with at least one locking surface, wherein the locking mechanism area includes at least one bearing surface with which the at least one locking surface is configured for being brought into contact in the closed position, wherein the locking mechanism area further includes a locking space, within which the at least one locking piece is configured for being moved from an unlocked position to a locked position in a region of the small firearm corresponding to the closed position, wherein the guide surface, which is within the locking space, is configured such that at least one of (i) an entry of a cartridge case under an influence of a torque during a movement of the action from the closed position to the open position is limited due to an interaction of the ejector and the extractor and (ii) an exit of the cartridge case is favored. a receiver; a barrel including a barrel bore axis; an action including a bolt head; and a guide surface, wherein the receiver is configured for (i) at least indirectly receiving the barrel including a locking mechanism area, a chamber, a guide area, and a muzzle arranged successively in the longitudinal direction, and (ii) at least indirectly receiving the action movably arranged within the receiver along the longitudinal direction from an open position to a closed position, wherein the bolt head includes a breech face, an extractor, an ejector, and at least one locking piece with at least one locking surface, wherein the locking mechanism area includes at least one bearing surface with which the at least one locking surface is configured for being brought into contact in the closed position, wherein the locking mechanism area further includes a locking space, within which the at least one locking piece is configured for being moved from an unlocked position to a locked position in a region of the small firearm corresponding to the closed position, wherein the guide surface, which is within the locking space, is configured such that at least one of (i) an entry of a cartridge case under an influence of a torque during a movement of the action from the closed position to the open position is limited due to an interaction of the ejector and the extractor and (ii) an exit of the cartridge case is favored.
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