# US 10,502,513 B2 · Firearm sound suppressor and methods of manufacture

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,502,513 B2
- Document ID: US10502513B2
- Status: Granted
- Kind: B2
- Application number: 16/225,104
- Filed: 2018-12-19
- Published: 2019-06-20
- Granted: 2019-12-10
- Earliest claimed: 2017-12-20
- Assignees: Benjamin R. Ellison
- Applicants: Ellison Dynamic Concepts, LLC
- Inventors: Benjamin Ellison; Tyler Jepson; Matthew Martin
- Web page: https://patentgrep.com/patent/US10502513B2

## CPC

- F41A 21/30: Silencers
- F41A 21/325: {Mountings for muzzle attachments}
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

A firearm noise suppressor attachable to the muzzle of a barrel having a longitudinal bore axis. It includes a housing with an outer wall, a forward end wall, and a rearward end wall. The rearward end wall attaches to a firearm barrel and the forward end wall includes an outlet opening aligned with the longitudinal bore axis. A blast chamber is defined at least in part by the rearward end wall, the outer wall, and a blast baffle. At least a second baffle is situated forward of the blast baffle and supported at a periphery by the outer wall. A plurality of circumferentially spaced apart helical blast vanes in the blast chamber impart a rotational flow to propellant gas.

## Claims

### Claim 1

A method of manufacturing a firearm noise suppressor, comprising the steps of:
printing by additive manufacturing a firearm noise suppressor precursor part having a housing having a center axis, side walls, a forward end wall, a rearward end wall, and defining an internal volume, having internal baffles separating the internal volume into chambers, and having temporary internal support structure along at least a portion of the center axis;
boring out a central bore passageway along the center axis to remove the temporary internal support structure and to form openings of predetermined size in the baffles and forward wall and to form an interim opening in the rearward wall;
removing internal manufacturing debris from the chambers through at least one of the interim opening and the forward wall opening;
boring out a larger opening in the rearward wall to form an attachment opening; and
providing attachment means in the attachment opening.

### Claim 2 (depends on 1)

The method of claim 1, wherein the temporary internal support structure extends to a blast baffle defining a blast chamber, the temporary internal support structure includes at least first and second temporary passageways operably venting the blast chamber to outside the housing; and
the step of removing internal manufacturing debris includes introducing a stream of air through the first temporary passageway to create a flow of air through the blast baffle to fluidize the debris and exhaust it through the second temporary passageway.

### Claim 3 (depends on 1)

The method of claim 1, wherein at least one baffle is supported by the side walls.

### Claim 4 (depends on 1)

The method of claim 1, wherein at least one baffle is supported by the forward end wall.

### Claim 5 (depends on 1)

The method of claim 1, wherein the attachment means includes threads.