Combustion Tool Fuel Cartridge Heating for Ammonia and Hydrogen

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Solution Overview

Problem

Existing combustion-powered nail and staple driving tools emit carbon oxides and are limited to using high-vaporization-pressure gaseous fuels, excluding fuels that could have lower climate impact.

Innovation Solution

Incorporation of an electrical device within the fuel tank or cartridge to prepare fuels like hydrogen or ammonia for combustion, using heating elements, vaporizers, ultrasonic or piezoelectric actuators, and converters to facilitate vaporization and cracking, enabling the use of carbon-free fuels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional gaseous fuels with high vaporization pressure are used, then the tool can operate reliably, but carbon oxide emissions increase and fuel selection is limited

Engineering Contradiction:

Improvecarbon oxide emissionsVSAvoidfuel selection range

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The patent changes the physical and chemical parameters of the fuel by introducing carbon-free alternatives (hydrogen, ammonia) and uses an electrical preparation device to modify the fuel's state (vaporization, cracking) to make it suitable for combustion, thereby eliminating carbon oxide emissions while expanding fuel selection

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the conventional mechanical/thermal fuel preparation system with an electrical preparation device that uses electrical energy to vaporize and crack the fuel, enabling the use of carbon-free fuels with lower vaporization pressures that would not be suitable for conventional systems

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If fuels with lower vaporization pressure are used, then carbon oxide emissions are reduced, but fuel preparation becomes more difficult

Engineering Contradiction:

Improvecarbon oxide emissionsVSAvoidfuel preparation complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent introduces an electrical preparation device as an intermediary between the fuel tank and combustion chamber, which performs vaporization and cracking functions to prepare carbon-free fuels with lower vaporization pressures for efficient combustion

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The electrical preparation device changes the physical parameters of the fuel (temperature, phase state) and chemical parameters (molecular structure through cracking) to enable combustion of fuels that would otherwise be unsuitable

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If carbon-free fuels like hydrogen or ammonia are used, then carbon oxide emissions are eliminated, but additional fuel preparation mechanisms are required

Engineering Contradiction:

Improvecarbon oxide emissionsVSAvoidfuel preparation mechanisms

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The electrical preparation device serves multiple functions: it vaporizes the fuel, cracks the fuel molecules, and prepares the fuel for combustion, thereby managing the additional complexity through a multi-functional component that handles various preparation tasks

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces conventional mechanical fuel delivery systems with an electrical preparation system that uses electrical energy to perform vaporization and cracking, enabling carbon-free fuel combustion

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Reduces carbon oxide emissions and expands the range of usable fuels, including those with lower vaporization pressures, enhancing tool reliability and efficiency.

Implementation Method 1

The electrical device can be actuated to heat or activate the fuel.

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 2

During dosing, the fuel vaporizes, which reduces the temperature of the fuel and of the surrounding components.

Methodology Applied

Scientific EffectVaporization: Evaporation

Implementation Method 3

using heating elements, vaporizers, ultrasonic or piezoelectric actuators, and converters to facilitate vaporization and cracking

Methodology Applied

Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 4

using heating elements, vaporizers, ultrasonic or piezoelectric actuators, and converters to facilitate vaporization and cracking

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 5

using heating elements, vaporizers, ultrasonic or piezoelectric actuators, and converters to facilitate vaporization and cracking

Methodology Applied

Scientific EffectPhase change: Phase Change

Data Source

PatentUS20260054363A1Combustion tool

Publication Date: 2026.02.26 ILLINOIS TOOL WORKS INC

AI summary

A combustion-powered tool comprising a body configured to receive a fuel cartridge, an electrical power supply mechanism, and an electrical device operationally connected to the electrical power supply mechanism and configured to prepare fuel in the fuel cartridge for combustion.