Ultrasonic Cleaning of Firearm Suppressors

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Solution Overview

Problem

Firearm suppressors are difficult to clean due to complex internal designs and the presence of toxic fouling materials like lead and copper, which can lead to performance degradation and safety hazards, especially in sealed models where disassembly is not feasible.

Innovation Solution

The use of ultrasound energy with a cleaning solution, such as water or specialized gun cleaners, to remove fouling from the internal surfaces of suppressors without disassembly, using an ultrasonic probe that transmits energy through a cleaning solution to break down and remove residue without oxidizing metals, thus minimizing exposure and environmental impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If common cleaning tools such as brushes or picks are used to clean the inside of a fouled suppressor, then the cleaning process is simple and accessible, but the cleaning effectiveness is insufficient due to the complexity of the internal design

Engineering Contradiction:
Improvecleaning accessibilityVSAvoidcleaning effectiveness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces traditional mechanical cleaning tools (brushes, picks) with an ultrasonic cleaning system that uses high-frequency sound waves to generate cavitation bubbles in a cleaning solution. These bubbles collapse near the fouled surfaces, creating micro-jets that mechanically remove fouling without requiring physical contact with the suppressor's complex internal geometry, thereby achieving effective cleaning of inaccessible areas.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes a liquid cleaning solution introduced into the suppressor's internal cavity, which is then activated by ultrasonic energy. The liquid medium allows the ultrasonic waves to propagate and interact with the fouling deposits on all internal surfaces, including those inaccessible to solid cleaning tools. The hydraulic presence of the liquid enables comprehensive coverage of the complex internal baffle structures.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Ease of operation

If disassembly is performed to clean sealed suppressors, then cleaning accessibility is improved, but the suppressor structure is damaged and cannot be reassembled

Engineering Contradiction:
Improvecleaning accessibilityVSAvoidsuppressor structural integrity
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The patent replaces mechanical disassembly with an ultrasonic cleaning system that can access the internal cavity through the existing open end of the suppressor. The ultrasonic transducer introduces cleaning energy into the internal volume without requiring physical breakdown of the sealed structure, maintaining structural integrity while achieving thorough cleaning of all internal surfaces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a liquid cleaning solution as an intermediary medium that can penetrate and fill the internal cavity of the sealed suppressor. This liquid intermediary allows ultrasonic energy to reach and act upon the fouling deposits throughout the internal volume, including around baffles and other internal features, without requiring the suppressor to be disassembled.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If water or cleaning solvent is used to dissolve fouling containing lead and copper, then fouling removal is effective, but toxic metal dissolution creates environmental hazards and disposal costs

Engineering Contradiction:
Improvefouling removal effectivenessVSAvoidtoxic metal dissolution
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces chemical dissolution methods with a mechanically-based ultrasonic cleaning approach. The ultrasonic cavitation and micro-jet forces physically dislodge and remove fouling deposits containing lead and copper without requiring chemical solvents that would dissolve these toxic metals into the cleaning solution, thereby preventing toxic metal dissolution and associated environmental hazards.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the harmful effect of strong chemical cleaners (which dissolve toxic metals) into a beneficial mechanical cleaning process. By using ultrasonic energy, the system achieves effective fouling removal while leaving toxic metals in their solid, non-dissolved state, transforming a potentially harmful chemical process into a safe physical process.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Productivity

If strong oxidizing agents are used to remove fouling, then fouling removal is enhanced, but metal surfaces are damaged and performance is degraded

Engineering Contradiction:
Improvefouling removal rateVSAvoidmetal surface integrity
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces chemical oxidation with mechanical ultrasonic cleaning. The ultrasonic cavitation bubbles collapse near the fouled surfaces, creating localized high-pressure micro-jets that mechanically fracture and remove fouling deposits. This mechanical action achieves effective fouling removal without the need for strong oxidizing agents that could damage metal surfaces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the cleaning mechanism from chemical (oxidation) to physical (ultrasonic vibration and cavitation). By adjusting parameters such as ultrasonic frequency, power level, and cleaning solution properties, the system optimizes mechanical cleaning effectiveness while avoiding the harmful chemical effects of strong oxidizers on metal surfaces.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method effectively cleans firearm suppressors without damaging the exterior or oxidizing toxic metals, reducing the risk of exposure and disposal hazards, while maintaining performance and extending the suppressor's lifespan by efficiently removing fouling without the need for disassembly.

Implementation Method 1

The use of ultrasound energy with a cleaning solution, such as water or specialized gun cleaners, to remove fouling from the internal surfaces of suppressors

Methodology Applied
Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 2

The use of ultrasound energy with a cleaning solution...to break down and remove residue

Methodology Applied
Scientific EffectCavitation: Cavitation

Data Source

PatentUS11890653B2Method for cleaning firearm suppressors
Publication Date: 2024.02.06 TDA RESEARCH INC
  • US11890653B2 patent drawing
  • US11890653B2 patent drawing
  • US11890653B2 patent drawing

AI summary

A method for cleaning firearm suppressors comprising: providing a used suppressor having an internal cavity with a fouling material deposited on a surface of the internal cavity; providing a cleaning solution; providing an ultra-sonic probe; introducing the cleaning solution into the internal cavity of the used suppressor; contacting at least part of the ultra-sonic probe with the cleaning solution that is introduced inside the internal cavity of the used suppressor; operating the ultra-sonic probe; removing at least part of the fouling material from the surface of the internal cavity of the used suppressor; and, draining the cleaning solution from the used suppressor.