IP Library › Granted Patent US 12,241,709
Granted Patent B2
US 12,241,709 · App. 18/380,835 · Granted Mar 4, 2025

Adjustable gas block

Inventors: Robert Stanley Schilling (Easton, MD); Jason Lee Miller (Hurlock, MD); Michael R. Llewellyn (Salisbury, MD)
Assignee: LWRC International LLC
F41A5/28
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Quick Facts
Patent No.
US 12,241,709
App. No.
18/380,835
Granted
Mar 4, 2025
Kind
B2
Abstract

Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include 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 valve threaded portion. The adjustment subassembly may be coupled to the gas block assembly.

Claims (60)

1. An adjustment subassembly for an adjustable gas block system for a gas operating system of a firearm, wherein the adjustable gas block system includes a gas block assembly, the adjustment subassembly comprising:

a valve stem end including:

a front-most portion,

a middle portion, and

a rear-most portion, the front-most portion being larger in diameter than the rear-most portion, and the middle portion being lesser in diameter than the rear-most portion,

a boss extending from a forward portion of the valve stem end,

at least one first gas ring surrounding the boss of the valve stem end;

a valve ring surrounding the boss of the valve stem end and disposed forward of the at least one first gas ring such that the at least one first gas ring is disposed between the front-most portion of the valve stem end and the valve ring;

at least one second gas ring surrounding the boss of the valve stem end and disposed forward of the valve ring such that a portion of the valve ring is disposed between the at least one first gas ring and the at least one second gas ring;

a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and

a valve rotator coupled to the valve threaded portion for adjusting the flow of gas.

2. The adjustment subassembly of claim 1 , wherein the valve ring includes:

a forward shoulder;

a rearward shoulder; and

a flange between the forward shoulder and the rearward shoulder,

wherein the rearward shoulder communicates with the at least one first gas ring and the forward shoulder communicates with the at least one second gas ring.

3. The adjustment subassembly of claim 1 , wherein the at least one second gas ring is located between the valve ring and the valve rotator.

4. The adjustment subassembly of claim 1 , further comprising a first through hole in the boss and a second through hole in the valve threaded portion for receiving a first sub-assembly pin to couple the valve stem end to the valve threaded portion.

5. The adjustment subassembly of claim 1 , wherein the threaded portion of the valve threaded portion is on a reduced diameter shoulder of the valve threaded portion.

6. The adjustment subassembly of claim 5 , wherein a through hole in the valve threaded portion is on an unthreaded portion of the reduced diameter shoulder.

7. The adjustment subassembly of claim 1 , wherein the valve rotator and valve threaded portion are a unitary component.

8. The adjustment subassembly of claim 1 , wherein the valve rotator comprises a valve rotator boss at the rear of the valve rotator.

9. The adjustment subassembly of claim 8 , wherein the valve rotator boss fits within an axial opening of the valve threaded portion to couple the valve rotator to the valve threaded portion.

10. The adjustment subassembly of claim 1 , wherein the valve rotator comprises a ring of grooves.

11. The adjustment subassembly of claim 10 , wherein the grooves are evenly spaced around a circumference of the valve rotator.

12. The adjustment subassembly of claim 1 , wherein the valve rotator comprises one or more flat areas on a forward section of the valve rotator.

13. The adjustment subassembly of claim 1 , further comprising a through hole extending between two flat areas on a forward section of the valve rotator.

14. The adjustment subassembly of claim 1 , further comprising an exterior mounted torsion spring, wherein the exterior mounted torsion spring is in a detent.

15. The adjustment subassembly of claim 1 , further comprising more than four grooves on the valve rotator to set adjustment of the adjustable gas block assembly.

16. An adjustable gas block system for a gas operating system of a firearm, wherein the adjustable gas block system includes a gas block assembly, the adjustable gas block system including an adjustment subassembly comprising:

a valve stem end including:

a front-most portion,

a middle portion, and

a rear-most portion, the front-most portion being larger in diameter than the rear-most portion, and the middle portion being lesser in diameter than the rear-most portion,

a boss extending from a forward portion of the valve stem end,

at least one first gas ring surrounding the boss of the valve stem end;

a valve ring surrounding the boss of the valve stem end and disposed forward of the at least one first gas ring such that the at least one first gas ring is disposed between the front-most portion of the valve stem end and the valve ring;

at least one second gas ring surrounding the boss of the valve stem end and disposed forward of the valve ring such that a portion of the valve ring is disposed between the at least one first gas ring and the at least one second gas ring;

a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and

a valve rotator coupled to the valve threaded portion for adjusting the flow of gas.

17. The adjustable gas block system of claim 16 , wherein the valve ring includes:

a forward shoulder;

a rearward shoulder; and

a flange between the forward shoulder and the rearward shoulder,

wherein the rearward shoulder communicates with the at least one first gas ring and the forward shoulder communicates with the at least one second gas ring.

18. The adjustable gas block system of claim 16 , wherein the at least one second gas ring is located between the valve ring and the valve rotator.

19. The adjustable gas block system of claim 16 , wherein the gas block assembly comprises:

a gas block through hole for securing a gas block to a gas block journal on a rifle barrel of the firearm, wherein the barrel comprises a barrel gas port;

a first duct to direct pressurized gas from the rifle 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 valve threaded portion,

wherein the adjustment subassembly is coupled to the gas block assembly, to affect flow of gas from the barrel gas port of the firearm that comprises the adjustable gas block system.

20. The adjustable gas block system of claim 19 , further comprising:

a rotation doubler located between the valve stem end and the gas block assembly.

21. The adjustable gas block system of claim 20 , further comprising:

a valve seat located between the rotation doubler and the gas block assembly.

22. The adjustable gas block system of claim 21 , further comprising:

a rotation limit pin.

23. The adjustable gas block system of claim 19 , wherein an inner diameter of the plenum contacts an outer diameter of the at least one first gas ring and the at least one second gas ring.

Continuity (7)
Continuation 18109806 · Feb 14, 2023
Continuation 17506651 · Oct 20, 2021
Continuation 16430413 · Jun 3, 2019
Continuation 15890002 · Feb 6, 2018
Continuation 15000587 · Jan 19, 2016
Provisional Application 62105001 · Jan 19, 2015
Related Publication 20240044595A1 · Feb 8, 2024
References Cited (93)
US 1431059A · Sutter · 1922 [cited by applicant]
US 1738501A · Moore · 1929 [cited by applicant]
US 2058897A · Marek · 1936 [cited by applicant]
US 2286776A · Burch et al. · 1942 [cited by applicant]
US 2340293A · Balleisen · 1944 [cited by applicant]
US 2560292A · Kauch · 1951 [cited by applicant]
US 2732769A · Simpson · 1956 [cited by applicant]
US 2748662A · Simpson · 1956 [cited by applicant]
US 4447195A · Schuck · 1984 [cited by applicant]
US 4714091A · Wagner · 1987 [cited by applicant]
US 4798124A · Hurlemann et al. · 1989 [cited by applicant]
US 5622142A · Strieber et al. · 1997 [cited by applicant]
US 5945626A · Robbins · 1999 [cited by applicant]
US 7275529B2 · Boys · 2007 [cited by applicant]
US 7451679B2 · Stevenson et al. · 2008 [cited by applicant]
US 7461581B2 · Leitner-Wise · 2008 [cited by applicant]
US 7775150B2 · Hochstrate et al. · 2010 [cited by applicant]
US 7856917B2 · Noveske · 2010 [cited by applicant]
US 7891284B1 · Barrett · 2011 [cited by applicant]
US 8316750B2 · Toeckes et al. · 2012 [cited by applicant]
US 8607688B2 · Cassels · 2013 [cited by applicant]
US 8863639B2 · Gomez · 2014 [cited by applicant]
US 8869674B2 · Ruck et al. · 2014 [cited by applicant]
US 8875614B2 · Gomez · 2014 [cited by applicant]
US 9091498B1 · Gomez · 2015 [cited by applicant]
US 9170061B2 · Gomez · 2015 [cited by applicant]
US 9243859B1 · Miller et al. · 2016 [cited by applicant]
US 9423197B2 · Gomez · 2016 [cited by applicant]
US 9506704B2 · Gomez · 2016 [cited by applicant]
US 9995546B2 · Schilling et al. · 2018 [cited by applicant]
US 10030922B2 · Gomez · 2018 [cited by applicant]
US 10309737B2 · Schilling et al. · 2019 [cited by applicant]
US 10480876B2 · Gomez · 2019 [cited by applicant]
US 11029107B2 · Gomez · 2021 [cited by applicant]
US 11175105B2 · Schilling et al. · 2021 [cited by applicant]
US 11578936B2 · Schilling et al. · 2023 [cited by applicant]
US 11656044B2 · Gomez · 2023 [cited by applicant]
US 11788808B2 · Schilling et al. · 2023 [cited by applicant]
US 20060086099A1 · Dickerson et al. · 2006 [cited by applicant]
US 20060283318A1 · Beaty · 2006 [cited by applicant]
US 20100101401A1 · Toeckes et al. · 2010 [cited by applicant]
US 20100218671A1 · Mayberry et al. · 2010 [cited by applicant]
US 20110023699A1 · Barrett · 2011 [cited by applicant]
US 20110186305A1 · Wilde · 2011 [cited by applicant]
US 20140260947A1 · Gomez · 2014 [cited by examiner]
US 20140283672A1 · Sparling · 2014 [cited by applicant]
US 20160265860A1 · Schilling et al. · 2016 [cited by applicant]
US 20190017760A1 · Schilling et al. · 2019 [cited by applicant]
US 20240044595A1 · Schilling · 2024 [cited by examiner]
US 8,752,473 B2, 06/2014, Gomez (withdrawn) [cited by applicant]
U.S. Appl. No. 18/200,383, filed May 22, 2023, Gomez. [cited by applicant]
U.S. Appl. No. 12/220,725, filed Jul. 28, 2008, Gomez. [cited by applicant]
U.S. Appl. No. 15/335,951, filed Oct. 27, 2016, Gomez. [cited by applicant]
U.S. Appl. No. 62/105,001, filed Jan. 19, 2015, Schilling. [cited by applicant]
In the U.S. Appl. No. 12/220,725, dated Aug. 24, 2010, Office Action. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Jan. 12, 2012, Office Action. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Jul. 24, 2012, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Jan. 15, 2013, Office Action. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Sep. 12, 2013, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Feb. 3, 2014, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 12/929,928, dated Jun. 30, 2014, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 13/593,021, dated Feb. 5, 2014, Office Action. [cited by applicant]
In the U.S. Appl. No. 13/593,021, dated Jun. 12, 2014, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 14/291,455, dated Jul. 30, 2014, Office Action. [cited by applicant]
In the U.S. Appl. No. 14/291,455, dated Mar. 23, 2015, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 14/291,455, dated Jun. 26, 2015, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 14/484,715, dated Dec. 19, 2014, Office Action. [cited by applicant]
In the U.S. Appl. No. 14/484,715, dated Apr. 14, 2015, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 14/790,660, dated Feb. 2, 2016, Office Action. [cited by applicant]
In the U.S. Appl. No. 14/790,660, dated Jul. 27, 2016, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 14/920,668, dated Feb. 10, 2016, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 14/920,668, dated Apr. 27, 2016, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 15/000,587, dated Apr. 7, 2017, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 15/000,587, dated Jul. 11, 2017, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 15/000,587, dated Jan. 4, 2018, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 15/243,707, dated May 25, 2017, Office Action. [cited by applicant]
In the U.S. Appl. No. 15/243,707, dated Nov. 27, 2017, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 15/243,707, dated Mar. 26, 2018, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 15/890,002, dated Jan. 14, 2019, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 16/043,121, dated Apr. 26, 2019, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 16/043,121, dated Jul. 11, 2019, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 16/430,413, dated Sep. 3, 2020, Office Action. [cited by applicant]
In the U.S. Appl. No. 16/430,413, dated Mar. 4, 2021, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 16/430,413, dated Jul. 22, 2021, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 16/653,590, dated Sep. 2, 2020, Final Office Action. [cited by applicant]
In the U.S. Appl. No. 16/653,590, dated Feb. 11, 2021, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 16/653,590, dated Mar. 1, 2021, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 17/342,188, dated Jun. 29, 2022, Office Action. [cited by applicant]
In the U.S. Appl. No. 17/342,188, dated Jan. 17, 2023, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 17/506,651, dated Oct. 13, 2022, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 18/109,806, dated Jun. 30, 2023, Notice of Allowance. [cited by applicant]
In the U.S. Appl. No. 18/200,383, dated Feb. 28, 2024, Office Action. [cited by applicant]
In the U.S. Appl. No. 18/200,383, dated Sep. 27, 2024, Notice of Allowance. [cited by applicant]