Protective fire glove

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Solution Overview

Problem

Current firefighting gloves are inadequate in providing comprehensive protection against heat, impacts, punctures, and chemicals while maintaining dexterity and durability, particularly in compliance with NFPA 1971-2018 Edition Standards.

Innovation Solution

A multi-layered fire protective glove design featuring a palm portion with a polymer impregnated layer, a moisture barrier layer, and multiple protective layers constructed from aramid fibers, meta-aramid fibers, and poly(ionic liquid)s, and a back portion with similar layers, ensuring high heat protection and dexterity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a multi-layered structure with multiple protective layers is used, then protection against heat, impacts, punctures, and chemicals is improved, but device complexity increases

Engineering Contradiction:
Improveprotection against heat, impacts, punctures, and chemicalsVSAvoidglove structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The glove is divided into multiple functional layers including an outer shell layer, intermediate layers, and an inner liner layer. Each layer is designed to provide specific protective functions such as heat resistance, impact protection, puncture resistance, and chemical protection, allowing the complex protection requirements to be distributed across separate specialized components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The glove utilizes composite material construction with different layers made from various materials optimized for specific protective functions. The outer shell layer uses materials resistant to heat and chemicals, intermediate layers provide structural protection against impacts and punctures, and the inner liner provides comfort and moisture management, creating a composite structure that delivers comprehensive protection.

Inventive Principle:
Principle #40Composite materials

2Reliability

If multiple protective layers are added to enhance protection, then reliability improves, but ease of operation deteriorates due to reduced dexterity

Engineering Contradiction:
Improveprotection levelVSAvoiddexterity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

Different regions of the glove are designed with varying material properties and layer configurations to provide localized protection where needed while maintaining dexterity in areas requiring flexibility. The palm and finger areas may have different layer compositions compared to the back of the hand, optimizing both protection and operational capability for each specific region.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The glove employs flexible material constructions and thin film layers that provide necessary protection while maintaining flexibility and conformability to the hand. The use of flexible polymers and thin protective films allows the multi-layered structure to move with the hand, preserving dexterity despite the increased protection levels.

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If heavy-duty protective materials are used, then protection against hazards is improved, but weight increases

Engineering Contradiction:
Improveprotection against hazardsVSAvoidglove weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The glove uses composite material construction combining lightweight materials with high protective properties. Advanced polymer composites and fiber-reinforced materials provide strength and protection against heat, impacts, and punctures while maintaining lower weight compared to traditional heavy-duty protective materials.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The protective function is segmented across multiple thin layers rather than relying on a single thick layer. This distribution of protection across layers allows each layer to be optimized for specific protective functions using lightweight materials, reducing overall weight while maintaining comprehensive protection.

Inventive Principle:
Principle #1Segmentation

4Reliability

If comprehensive protective features are added, then protection level improves, but manufacturing complexity increases

Engineering Contradiction:
Improveprotection levelVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The glove manufacturing process is segmented into separate stages for constructing different layers and components. Each layer (outer shell, intermediate layers, inner liner) can be manufactured and prepared independently, then assembled together, allowing for specialized manufacturing techniques to be applied to each layer while simplifying the overall production process.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The use of composite materials and layered construction allows for modular manufacturing approaches where different material combinations can be produced using standardized processes for each layer type, then assembled. This modularity reduces manufacturing complexity compared to creating a monolithic protective structure.

Inventive Principle:
Principle #40Composite materials

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 glove provides enhanced protection and dexterity, meeting NFPA standards, and can withstand multiple washings without significant degradation, addressing the limitations of existing gloves.

Implementation Method 1

a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

Firefighters encounter extreme heat, direct contact with fire and flash-flames

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 3

a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluoroethylene, aramid fibers, or a combination thereof

Methodology Applied
Scientific EffectHydrophobicity: Hydrophobe

Implementation Method 4

a palm portion and a back portion. The palm portion may include a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof

Methodology Applied
Scientific EffectThermal stability:

Implementation Method 5

a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of poly(ionic liquid)s

Methodology Applied
Scientific EffectFlame resistance:

Data Source

PatentUS11758956B2Protective fire glove
Publication Date: 2023.09.19 FIRECRAFT SAFETY PRODUCTS LLC
  • US11758956B2 patent drawing
  • US11758956B2 patent drawing
  • US11758956B2 patent drawing

AI summary

A fire protective glove includes a palm portion and a back portion. The palm portion includes a polymer impregnated layer constructed of aramid fibers, leather, or a combination thereof; and a palm moisture barrier layer that is interior to the polymer impregnated layer, the palm moisture barrier layer being constructed of polyurethane, polytetrafluroethylene, aramid fibers, or a combination thereof. The back portion includes a first back protective layer constructed of aramid fibers, leather, or a combination thereof; and a second back protective layer that is interior to the first back protective layer, the second back protective layer being constructed of aramid fibers, modacrylic, or a combination thereof.