Clean Lubricants for Powered Fastener Tools
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Solution Overview
Problem
Powered fastener driving tools, especially pneumatic and combustion powered tools, face frequent maintenance issues due to contaminant, residue, and deposit buildup from lubricants like UCON 650 oil and DWFP4OZOIL, which gel and cross-link, reducing tool efficiency and requiring regular cleaning.
Innovation Solution
The use of clean lubricants such as mineral-based oils like NS 6016, Drakeol 9, Drakeol 10, Drakeol 34, and BETA FLUID, which remain in a liquid state under high pressure and temperature, preventing gelation and cross-linking, and are designed to evaporate at controlled rates for continuous lubrication without residue accumulation, are integrated into the tools to reduce maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lubricants like UCON 650 oil are used in powered fastener driving tools, then good lubrication is provided, but contaminant, residue, and deposit buildup occurs due to gelation and cross-linking
Solution Approach 1:
The patent changes the chemical composition parameters of the lubricant by using a hydrocarbon-based lubricant with specific properties (viscosity of 193 SUS at 100°F, viscosity index of 650, specific gravity of 0.999) instead of traditional polyalphaolefin-based lubricants. This parameter change prevents gelation and cross-linking while maintaining lubrication performance, thereby reducing contaminant buildup.
Solution Approach 2:
The patent employs a consumable lubricant that is designed to be depleted over time rather than permanently retained in the tool. The lubricant is supplied from a cartridge that can be replaced when depleted, allowing the tool to operate continuously without maintenance cleaning. This approach accepts short-term lubricant presence in exchange for eliminating long-term contaminant accumulation.
2Ease of operation
If lubricants are used to reduce friction and wear, then operational smoothness is improved, but maintenance frequency increases due to residue accumulation
Solution Approach 1:
The patent extracts the lubricant from the tool's internal reservoir and relocates it to an external disposable cartridge. The lubricant is delivered to the tool through a lubricant delivery mechanism that allows the lubricant to be supplied externally rather than being stored internally. This extraction eliminates the need for internal cleaning and maintenance of lubricant reservoirs.
Solution Approach 2:
The tool incorporates an automatic lubricant delivery mechanism that supplies lubricant to the combustion chamber and moving parts without manual intervention. The system self-regulates lubricant flow through the lubricant delivery mechanism, ensuring continuous lubrication while eliminating the need for operator intervention for lubricant application or reservoir cleaning.
3Strength
If oil is used for lubrication in combustion powered tools, then metal-to-metal friction is reduced, but soot and dust accumulation increases
Solution Approach 1:
The patent changes the chemical composition parameters of the lubricant by using a hydrocarbon-based lubricant with specific properties (viscosity of 193 SUS at 100°F, viscosity index of 650, specific gravity of 0.999) instead of traditional polyalphaolefin-based lubricants. This parameter change prevents gelation and cross-linking while maintaining lubrication performance, thereby reducing contaminant buildup.
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
These clean lubricants significantly reduce contaminant and residue buildup, extending maintenance intervals and ensuring smooth tool operation by maintaining lubrication without solidifying or cross-linking, thus enhancing the operational efficiency and longevity of powered fastener driving tools.
Implementation Method 1
designed to evaporate at controlled rates for continuous lubrication without residue accumulation
Data Source
AI summary
Various embodiments of the present disclosure provide powered fastener driving tools and clean lubricants for powered fastener driving tools that reduce contaminant, residue, and deposit buildup or accumulation in the powered fastener driving tools, and thus reduce necessary maintenance for such powered fastener driving tools (or increases the time intervals between such necessary maintenance of powered fastener driving tools).