Free-Floating Handguard with Offset Mounting Fasteners

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Solution Overview

Problem

There is a need to facilitate the coupling of a handguard to a firearm, ensuring secure attachment and minimizing heat transfer from the hot barrel while allowing for the mounting of accessories.

Innovation Solution

A free-floating handguard design with a firearm coupling portion featuring vertically offset coupler receivers and a barrel nut configuration, utilizing a press nut and bolts to secure the handguard to the firearm, which includes apertures for heat venting and mounting platforms for accessories.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a handguard is coupled directly to the barrel, then the attachment is simple, but heat transfer from the hot barrel to the handguard increases causing burn risk

Engineering Contradiction:

Improveattachment simplicityVSAvoidheat transfer to handguard

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a free-floating handguard design that does not directly contact the barrel, creating an intermediary thermal barrier. The handguard is positioned to float alongside the barrel without direct thermal contact, thereby eliminating heat transfer while maintaining structural integrity and simplicity of attachment.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the handguard is designed as free-floating, then heat transfer is minimized, but the coupling mechanism becomes more complex

Engineering Contradiction:

Improveheat transfer reductionVSAvoidcoupling mechanism complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The coupling mechanism is segmented into discrete attachment points positioned at specific locations along the handguard. This segmentation allows the handguard to be attached at multiple isolated points without requiring a complex continuous coupling structure, simplifying the overall mechanism while maintaining the free-floating design.

Inventive Principle:

Principle #1Segmentation

3Reliability

If multiple coupler receivers are positioned at different locations, then secure attachment is achieved, but the manufacturing precision requirements increase

Engineering Contradiction:

Improveattachment securityVSAvoidcoupler receiver positioning precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The coupler receivers are positioned asymmetrically at different locations along the handguard rather than symmetrically. This asymmetric positioning provides secure attachment through distributed mounting points while being more tolerant of manufacturing variations, as the asymmetric layout naturally accommodates slight positioning deviations without compromising attachment security.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS9599430B1Firearm handguard

Publication Date: 2017.03.21 WHG PROPERTIES LLC

AI summary

A free-floating firearm handguard having vertically offset mounting fasteners.