US 12,313,364 B2
Safety mechanism for blowback firearm
Tyler Rainaud, Nottingham, NH (US); and Jesse D. Cole, Newmarket, NH (US)
Assigned to SIG SAUER, INC., Newington, NH (US)
Filed by Sig Sauer, Inc., Newington, NH (US)
Filed on Oct. 3, 2023, as Appl. No. 18/480,356.
Application 18/480,356 is a continuation of application No. 17/696,070, filed on Mar. 16, 2022, granted, now 11,808,540.
Prior Publication US 2024/0027151 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F41A 3/10 (2006.01)
CPC F41A 3/10 (2013.01) 20 Claims
OG exemplary drawing
 
1. A breechblock assembly for a firearm, the breechblock assembly comprising:
a breechblock extending along a central axis and configured to reciprocate along a receiver of the firearm between a recoil position and a battery position;
a lever on the breechblock, the lever movable from a blocking position to a non-blocking position in response to the breechblock moving from the recoil position to the battery position; and
a spring arranged to bias the lever to the blocking position;
wherein when the lever is in the blocking position the lever prevents the firearm from firing.