# US 10,309,737 B2 · Adjustable gas block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,737 B2 - Document ID: US10309737B2 - Status: Granted - Kind: B2 - Application number: 15/890,002 - Filed: 2018-02-06 - Published: 2019-01-17 - Granted: 2019-06-04 - Earliest claimed: 2015-01-19 - Assignees: LWRC International LLC - Applicants: LWRC International LLC - Inventors: Robert Stanley Schilling; Jason Lee Miller; Michael R. Llewellyn - Web page: https://patentgrep.com/patent/US10309737B2 ## CPC - F41A 5/28: Adjustable systems - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## 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 ### Claim 1 An adjustable gas block system comprising: an adjustment subassembly comprising: a valve stem end with a front-most portion larger in diameter than a rear-most portion and a boss extending from a 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; 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 valve threaded portion; and wherein the adjustment subassembly is coupled to the gas block assembly. ### Claim 2 (depends on 1) The system of claim 1, wherein the valve stem end further comprises a middle portion lesser in diameter than the rear-most portion. ### Claim 3 (depends on 1) The system 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. ### Claim 4 (depends on 1) The system of claim 1, further comprising one or more gas rings. ### Claim 5 (depends on 4) The system of claim 4, wherein one or more gas rings are located between the valve stem end and the valve ring and one or more gas rings are located between the valve ring and the valve rotator. ### Claim 6 (depends on 5) The system of claim 5, wherein the valve ring has a forward shoulder and a rear shoulder to each communicate with the one or more gas rings. ### Claim 7 (depends on 1) The system of claim 1, wherein the threaded portion of the valve threaded portion is on a reduced diameter shoulder of the valve threaded portion. ### Claim 8 (depends on 7) The system of claim 7, wherein a through hole in the valve threaded portion is on an unthreaded portion of the reduced diameter shoulder. ### Claim 9 (depends on 1) The system of claim 1, wherein the valve rotator and valve threaded portion are a unitary component. ### Claim 10 (depends on 1) The system of claim 1, wherein the valve rotator comprises a valve rotator boss at the rear of the valve rotator. ### Claim 11 (depends on 10) The system of claim 10, 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. ### Claim 12 (depends on 1) The method of claim 1, wherein the valve rotator comprises a ring of grooves. ### Claim 13 (depends on 12) The system of claim 12, wherein the grooves are evenly spaced around a circumference of the valve rotator. ### Claim 14 (depends on 1) The system of claim 1, wherein the valve rotator comprises one or more flat areas on a forward section of the valve rotator. ### Claim 15 (depends on 14) The system of claim 14, further comprising a through hole extending between two flat areas on the forward section of the valve rotator. ### Claim 16 (depends on 1) The system of claim 1, wherein the gas block assembly comprises a through hole for securing the gas block to a gas block journal on a rifle barrel. ### Claim 17 (depends on 1) The system of claim 1, wherein an inner diameter of the plenum contacts an outer diameter of one or more gas rings. ### Claim 18 (depends on 1) The system of claim 1, further comprising an exterior mounted torsion spring. ### Claim 19 (depends on 18) The system of claim 18, wherein the exterior mounted torsion spring is in a detent. ### Claim 20 (depends on 1) The system of claim 1, further comprising more than four grooves on the valve rotator to set adjustment of the adjustable gas block assembly.