Semiautomatic firearm
AssigneeSavage Arms, Inc.
InventorsIvan Kolev, John Linscott
Life of this patent
Estimating the term…
Abstract
A reciprocating bolt assembly has delayed blowback and a firing pin block. Features prevent out-of-battery firing, when the bolt assembly is not fully engaged to the firing chamber or barrel face, a movable member within a bolt body functions as a blocking member that blocks the firing pin and prevents the firing pin from striking a cartridge. In embodiments, the firing pin has two stop portions that the movable member can engage depending on the cycle status of the firearm. A reverse cam mechanism associated with the firing pin blocking provides a resistance to and delays blowback.
Claims19
A semiautomatic firearm chambered for rimfire cartridges, the semiautomatic firearm comprising:
- a receiver connecting to a barrel extending forwardly from the receiver, the barrel with a firing chamber, a bolt assembly movable along a central axis within the receiver and slidingly engaged therewith, the bolt assembly comprising:
- a bolt body with a firing pin extending through the bolt body, the bolt assembly slidingly movable into and out of an in-battery position;
- a movable member constrained by, extendable outwardly from, and retractable inwardly to the bolt body, the movable member having an distal end engaged with a cam surface external to the bolt assembly, the cam surface fixed with respect to the receiver, the cam surface including a transition portion whereby when the bolt assembly moves forwardly and rearwardly with respect to the receiver, the transition portion moves the movable member between an extended position and a retracted position, the bolt assembly further comprising a carrier positioned in the bolt body and having a ramp portion with a ramp surface engaged with the movable member at a surface on the movable member away from the distal end of the movable member, the carrier movable forwardly and rearwardly within the bolt body, the bolt assembly further comprising a manual handle extending from the carrier outwardly from an ejection port defined in the receiver.
A semiautomaticfirearm configured as a rifle, the semiautomaticfirearm comprising:a receiver connecting to a barrel extendingforwardlyfrom the receiver, the barrel with a firing chamber, a bolt assembly movable along a central axis within the receiverand slidingly engaged therewith, the bolt assembly comprising:
- a bolt body with a firing pin extendingthrough the bolt body, the bolt assembly slidingly movable into and out of an in-battery position;
- a movable member constrained by, extendable outwardly from, and retractable inwardlyto the bolt body, the movable member having an distal end engaged with a cam surface external to the bolt assembly, the cam surface fixed with respect to the receiver, the cam surface including a transition portion whereby when the bolt assembly moves forwardly and rearwardly with respect to the receiver, the transition portion moves the movable member between an extended position and a retracted position, the bolt assembly further comprising a carrier positioned in the bolt body, the carrier having a ramp portion with a ramp surface engaged with the movable member at a surface on the movable member, the carrier movable forwardly and rearwardly within the bolt body, wherein when the carrier is forward in the bolt body the movable member is extending outwardly;
- and wherein a manual handle connects to the carrier and extends outwardly from an ejection port.
A semiautomatic firearm chambered for rimfire cartridges and configured as a rifle, the semiautomatic firearm comprising:
- a receiver connecting to a barrel extending forwardly from the receiver, the barrel with a firing chamber, a bolt assembly movable along a central axis within the receiver and slidingly engaged therewith, the bolt assembly comprising:
- a bolt body with a firing pin extending through the bolt body, the bolt assembly slidingly movable into and out of an in-battery position;
- a movable member pivotally constrained by, extendable outwardly from, and retractable inwardly with respect to the bolt body, the movable member having an distal end engaging with a cam surface external to the bolt assembly, the cam surface fixed with respect to the receiver, the cam surface including a transition portion whereby when the bolt assembly moves forwardly and rearwardly with respect to the receiver, the transition portion moves the movable member between an extended position and a retracted position, the bolt assembly further comprising a carrier positioned in the bolt body and having a ramp portion with a ramp surface engaged with the movable member at a surface on the movable member away from the distal end of the movable member, the carrier movable forwardly and rearwardly within the bolt body, the bolt assembly further comprising a manual handle extending from the carrier outwardly from an ejection port defined in the receiver.
Dependencies are inferred from the claim text.