US 11,788,808 B2
Adjustable gas block
Robert Stanley Schilling, Easton, MD (US); Jason Lee Miller, Hurlock, MD (US); and Michael R. Llewellyn, Salisbury, MD (US)
Assigned to LWRC International LLC, Cambridge, MD (US)
Filed by LWRC International LLC, Cambridge, MD (US)
Filed on Feb. 14, 2023, as Appl. No. 18/109,806.
Application 18/109,806 is a continuation of application No. 17/506,651, filed on Oct. 20, 2021, granted, now 11,578,936.
Application 17/506,651 is a continuation of application No. 16/430,413, filed on Jun. 3, 2019, granted, now 11,175,105, issued on Nov. 16, 2021.
Application 16/430,413 is a continuation of application No. 15/890,002, filed on Feb. 6, 2018, granted, now 10,309,737, issued on Jun. 4, 2019.
Application 15/890,002 is a continuation of application No. 15/000,587, filed on Jan. 19, 2016, granted, now 9,995,546, issued on Jun. 12, 2018.
Claims priority of provisional application 62/105,001, filed on Jan. 19, 2015.
Prior Publication US 2023/0204312 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F41A 5/00 (2006.01); F41A 5/26 (2006.01); F41A 5/28 (2006.01)
CPC F41A 5/28 (2013.01) 20 Claims
OG exemplary drawing
 
1. An adjustable gas block system comprising:
an adjustment subassembly comprising:
a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the front-most portion of the valve stem end;
a valve ring surrounding the boss of the valve stem end; and
a valve adjustment portion configured to receive the boss of the valve stem end and having a threaded portion;
a gas block assembly comprising:
a gas block through hole;
a first duct to direct pressurized gas from a barrel to a plenum;
a second duct to direct a regulated volume of gas to a gas operating system;
a seat valve to control the regulated volume of gas to the gas operating system; and
a gas block threaded portion for coupling to the threaded portion; and
wherein the adjustment subassembly is coupled to the gas block assembly.