Firearm Sound Suppressor With Flanged Rear End

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing sound suppressors for firearms face issues such as difficult disassembly due to adhesive deposits, premature failure under high rates of fire, and ineffective muzzle flash reduction, along with cumbersome and prone-to-failure mounting mechanisms.

Innovation Solution

The design incorporates a flexible inner sleeve for easy baffle removal, a rear end flange for secure attachment, a blast deflector to manage pressure, and a tapered front end plate to reduce muzzle flash, along with a slot-and-tab mechanism for improved mounting and alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a threaded rear end cap is used to attach the suppressor to the firearm, then the suppressor can be securely mounted, but the suppressor becomes difficult to remove as the torque can cause the rear end cap to unscrew from the housing instead

Engineering Contradiction:
Improvemounting securityVSAvoidremoval ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The suppressor is divided into distinct functional components: a housing that remains fixed during mounting/dismounting, and a removable rear end cap assembly that contains the threading interface. This segmentation ensures that operational torque affects only the rear end cap assembly, not the housing, preventing unintended unscrewing of the housing while maintaining secure mounting through the threaded rear end cap.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the suppressor is designed to contain combustion gases for extended periods, then muzzle blast is reduced, but particulate deposits accumulate on interior surfaces making cleaning difficult

Engineering Contradiction:
Improvemuzzle blast suppressionVSAvoidcleaning ease
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The suppressor interior is segmented into a permanent housing and a removable inner assembly (including baffles and rear end cap). This allows the inner assembly to be easily extracted for cleaning without disassembling the entire suppressor or damaging the housing, while the housing maintains the gas containment function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The removable rear end cap assembly enables extraction of the baffle stack and other interior components that accumulate deposits. Users can remove these components and clean them separately, preventing the need to damage or disassemble the permanent housing structure.

Inventive Principle:
Principle #2Taking out (Extraction)

3Strength

If the inner sleeve is rigid to maintain structural integrity, then the baffle is securely held, but the baffle cannot be removed for cleaning without damaging the inner sleeve

Engineering Contradiction:
Improvestructural integrityVSAvoidbaffle removal ease
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The inner sleeve transitions from a rigid structural component to a flexible sacrificial component. The flexibility allows the sleeve to be easily deformed for baffle removal and reformation, providing both secure baffle retention during operation and easy maintenance access when needed.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8453789B1Firearm sound suppressor with flanged back end
Publication Date: 2013.06.04 SUREFIRE LLC
  • US8453789B1 patent drawing
  • US8453789B1 patent drawing
  • US8453789B1 patent drawing

AI summary

In one example, a firearm sound suppressor includes a housing including a front end and a rear end. The rear end includes a flange that partially encloses the rear end and defines a rear aperture. The firearm sound suppressor also includes a back end member disposed substantially within the rear end of the housing and including a rear surface disposed in abutment with an inner surface of the flange to prevent the back end member from passing through the rear aperture. Other embodiments are also contemplated.