Firearm Barrel Jacket with Spacer-Stabilized Thermal Gap

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Solution Overview

Problem

Existing barrel jackets in firearms require expensive, precisely controlled materials to evenly dissipate heat and prevent thermal expansion, leading to usability issues and high production costs.

Innovation Solution

A barrel jacket design featuring an inner and outer casing with a continuous gap stabilized by a spacer, allowing for the use of less expensive materials and improved thermal management, while maintaining the barrel's structural integrity and usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a barrel jacket is used to cover the barrel, then the thermal management is improved, but the material cost and manufacturing precision requirements increase

Engineering Contradiction:
Improvethermal managementVSAvoidmaterial cost and manufacturing precision
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The barrel jacket is divided into an inner casing and an outer casing separated by a continuous gap. This segmentation allows each casing to be made from simpler, less expensive materials without requiring precise thermal matching, as the gap acts as a thermal barrier that decouples the thermal management function from the structural components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The continuous gap between the inner and outer casings serves as a thermal intermediary layer. This gap, stabilized by a spacer, acts as a thermal barrier that prevents direct thermal coupling between the barrel and the casings, allowing the use of common materials while maintaining thermal management performance.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If expensive materials with precise thermal control are used, then thermal expansion matching is improved, but the production cost increases

Engineering Contradiction:
Improvethermal expansion matchingVSAvoidproduction cost
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

By segmenting the barrel jacket into inner and outer casings with a continuous gap, the invention eliminates the need for expensive materials with precisely controlled thermal expansion coefficients. The gap stabilizer assembly allows each component to be made from standard materials without requiring thermal expansion matching.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If the barrel jacket is made with tight contact to the barrel, then the structural stability is improved, but the thermal dissipation performance deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidthermal dissipation
Core Design Contradiction:
Stability of the object's compositionVSTemperature

Solution Approach 1:

The continuous gap between the inner and outer casings, stabilized by a spacer, acts as a thermal intermediary that maintains structural stability while enabling effective thermal dissipation. The spacer ensures the gap remains stable structurally while the gap itself provides thermal isolation, allowing the barrel to dissipate heat evenly without requiring tight contact between jacket components and the barrel.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 design enhances the durability and usability of firearms by using common materials, reducing production costs, and providing effective thermal management and camouflage functionality.

Implementation Method 1

the outer casing (3) is arranged at a distance to the inner casing (2), covering said inner casing (2), thus providing a continuous gap (5) between inner casing (2) and outer casing (3)

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS8245618B2Barrel jacket for a firearm
Publication Date: 2012.08.21 GERMAN SPORT GUNS GMBH
  • US8245618B2 patent drawing
  • US8245618B2 patent drawing
  • US8245618B2 patent drawing

AI summary

A barrel jacket covering at least partially the outer surface of the bullet-guiding barrel of a firearm is provided, wherein the barrel jacket has at least one inner casing and one outer casing and a spacer. The inner casing is arranged adjacent to the barrel, covering the barrel in a close-up position. The outer casing is arranged at a distance to the inner casing, covering the inner casing, thus providing a continuous gap. The continuous gap is stabilized by at least one spacer, which stabilizes the inner casing and outer casing in their relative positions.