Polymer Casing Deflector for Firearm Trajectory Control

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Solution Overview

Problem

Existing firearms' brass deflectors are erratic in controlling ejected casing trajectories, inadequate for left-handed users and military positions, and suffer from damage and reduced effectiveness due to repeated contact with casings, leading to 'brass burns' and unsightly damage.

Innovation Solution

A device made of polymer material with angled or curved surfaces is attached to the firearm to modify and dampen the trajectory of ejected casings, collecting them in a small area, reducing energy impact and protecting the firearm from damage, and accommodating various user positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If brass deflectors are used to deflect spent casings, then the casings are deflected from the firing chamber, but the deflection is erratic and cannot be controlled

Engineering Contradiction:

Improvecasing deflection controlVSAvoiddeflection consistency

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent changes the material parameter from rigid brass to compliant polymer, which fundamentally alters how the deflector interacts with spent casings. The polymer material's elasticity and energy absorption properties enable consistent deflection control despite variations in casing ejection parameters

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses polymer materials that combine elasticity, energy absorption, and durability in a single material system. This composite approach allows the deflector to consistently manage the kinetic energy of spent casings while maintaining structural integrity

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If brass deflectors are designed for right-handed users, then the casings are deflected away from the user, but left-handed users and military positions are not accommodated

Engineering Contradiction:

Improveuser position compatibilityVSAvoidcasing deflection direction

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent designs the deflector with universal applicability through adjustable components and modular construction. The polymer material's inherent properties allow the same device to effectively deflect casings for various user positions and orientations without requiring position-specific designs

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention incorporates adjustable and reconfigurable elements that allow the deflector's geometry and orientation to be dynamically adapted to different user positions and firing scenarios, transforming a static right-handed design into a dynamic multi-position solution

Inventive Principle:

Principle #15Dynamics

3Duration of action of stationary object

If brass deflectors are made of the same metal as the firearm, then the deflector is durable, but it suffers from damage and reduced effectiveness due to repeated contact with casings

Engineering Contradiction:

Improvedeflector service lifeVSAvoiddeflector durability

Core Design Contradiction:

Duration of action of stationary objectVSStrength

Solution Approach 1:

The patent employs polymer materials that are more resistant to wear and damage from repeated casing contact compared to traditional brass. While individual polymer deflectors may need replacement, the material's durability and resistance to brass burns significantly extend operational effectiveness

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

Inventive Principle:

Principle #40Composite materials

4Ease of operation

If brass deflectors are used, then casings are deflected, but they cause brass burns and damage to the firearm

Engineering Contradiction:

Improvecasing trajectory controlVSAvoidbrass burns and damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a polymer deflector as an intermediary component between the spent casing and the firearm. This intermediary material absorbs and dissipates the kinetic energy of the casing through elastic deformation, preventing direct contact damage and brass burns while still achieving effective deflection

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention converts the harmful kinetic energy of spent casings into beneficial elastic deformation of the polymer material. The energy that would cause brass burns and damage is instead absorbed and dissipated through the polymer's elastic properties, transforming a harmful effect into a protective mechanism

Inventive Principle:

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

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 device effectively controls and collects ejected casings, reducing 'brass burns' and extending the life of the firearm by absorbing kinetic energy, while improving usability for different user positions and maintaining the firearm's appearance.

Implementation Method 1

The surface is configured to modify a trajectory of the spent casings by accepting an impact at an angle with each spent casing at a point of impact on the surface

Methodology Applied

Scientific EffectImpact Force: Impact Force

Implementation Method 2

absorbing kinetic energy

Methodology Applied

Scientific EffectEnergy Absorption: Absorption (physical)

Implementation Method 3

deflecting the spent casings

Methodology Applied

Scientific EffectDeflection:

Data Source

PatentUS9791227B2Device for modification of ejected casings trajectories

Publication Date: 2017.10.17 HAVOC TACTICAL LLC

AI summary

A device for modification of ejected casings trajectories includes a top side and a bottom side. The bottom side is configured for attachment to a location on a firearm. The location is in an expected trajectory of spent casings ejected from the firearm. The top side includes a surface facing the expected trajectory of the spent casings. The surface is configured to modify a trajectory of the spent casings by accepting an impact at an angle with each spent casing at a point of impact on the surface and deflecting the spent casings at a deflection angle. The deflection angle is dependent on the point of impact. The surface may include an angled surface or a curved surface. One side of the curved or angled surface may be raised compared to another side of the curved or angled surface.