Breech Adapter System for Dart Guns

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Solution Overview

Problem

Existing dart guns face challenges in cold environments due to reduced operability of CO2-powered models and lack of reliability in shot count, and traditional gunpowder-powered models can cause damage to darts and stress animals, while also being subject to legal restrictions.

Innovation Solution

A breech adapter system for firearms that includes a plug with separate chambers for cartridge reception and propellant delivery, a spring-biased extractor for easy loading and ejection, and a baffle rod to muffle sound and protect darts from heat and flames, allowing for the use of blank firing cartridges to propel darts efficiently and safely.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If CO2-powered rifles are used, then dart propulsion is achieved, but operability is reduced in cold environments and reliability of shot count is compromised

Engineering Contradiction:

Improvereliability of dart propulsionVSAvoidoperability in cold environments

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The invention changes the propellant parameter from CO2 gas to blank firing cartridges, which maintain reliable dart propulsion across varying temperatures while eliminating the cold environment operability issues associated with CO2-powered systems

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses disposable blank firing cartridges instead of reusable CO2 cartridges, accepting that each shot consumes a new cartridge but gaining reliability and consistent performance across all environmental conditions

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If gunpowder-powered shot shells are used, then dart propulsion is achieved, but damage to darts and stress on animals occurs

Engineering Contradiction:

Improvedart propulsion effectivenessVSAvoiddamage to darts and stress on animals

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention extracts the harmful elements (shell casing, excessive flame, loud noise) from the propellant system by using modified blank firing cartridges that produce a softer, shorter-duration explosion, reducing dart damage and animal stress while maintaining propulsion effectiveness

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention converts the potentially harmful gunpowder explosion into a beneficial propulsive force by carefully controlling the burn rate and duration through the use of blank cartridges, which provide sufficient thrust while minimizing negative effects on the dart and animal

Inventive Principle:

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

3Reliability

If standard firearms are adapted for dart firing, then dart propulsion is achieved, but legal restrictions apply

Engineering Contradiction:

Improvedart propulsion capabilityVSAvoidlegal compliance

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention uses blank firing cartridges instead of standard ammunition, which are legally permissible in many jurisdictions where real ammunition would be restricted, maintaining dart propulsion capability while improving legal compliance and adaptability

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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

The breech adapter system enhances dart gun performance in cold conditions, ensures reliable dart propulsion, reduces stress on animals, and complies with legal regulations by using blank cartridges, improving the overall efficiency and safety of dart delivery.

Implementation Method 1

a spring-biased extractor for easy loading and ejection

Methodology Applied

Scientific EffectSpring: Spring

Implementation Method 2

a baffle rod to muffle sound and protect darts from heat and flames

Methodology Applied

Scientific EffectAcoustic absorption: Acoustic Absorption

Implementation Method 3

delivering a propellant charge from the cartridge to the barrel

Methodology Applied

Scientific EffectCombustion: Combustion

Data Source

PatentUS9080830B2Dart gun

Publication Date: 2015.07.14 BLACKPOWDER PRODUCTS INC

AI summary

A dart gun for medicating or tranquilizing animals, which includes a barrel and a breech plug, the barrel including a bore defining a longitudinal axis extending from a muzzle end to a breech end, and the breech end including a breech plug chamber and a notch. The breech plug is removably engageable with the breech plug chamber and includes a plug member, an extractor, and a baffle member. The extractor provides convenient loading, firing and ejecting of a blank firing cartridge that is used to fire the dart from the barrel. The baffle rod provides for muffling the sound of the explosion of the blank firing cartridge, and reduces the amount of heat and flames that are exposed to the dart when firing the blank firing cartridge.