High Density Metal Pellet Coating for Vibration Attenuation
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Solution Overview
Problem
Existing vibration dampening methods for percussive tools like rivet guns are ineffective in reducing ergonomic stress and tool instability, especially during high-impact operations, and often compromise tactile feedback or increase installation time.
Innovation Solution
A coating system comprising a high density metal pellet matrix, such as tungsten carbide pellets, embedded in an adhesive material with a polymer overlay, applied to the tool to enhance mass and attenuate vibration, thereby reducing ergonomic strain and improving control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vibration dampening materials (springs, air, viscoelastic materials) are incorporated in rivet gun, then vibration is reduced, but tactile sensory feedback is decreased or lost
Solution Approach 1:
The patent applies composite materials by combining high density metal particles (such as tungsten carbide or lead) embedded in a polymer matrix material. This composite structure provides vibration dampening properties while maintaining the rigid connection and tactile feedback necessary for percussive tool operation. The metal particles dispersed throughout the polymer create a material that attenuates vibration without the compliance of traditional dampening materials.
2Object-affected harmful factors
If vibration dampening gloves are used for high impact riveting, then vibration protection is needed, but known gloves are not effective
Solution Approach 1:
The patent employs composite materials with high density metal particles (tungsten carbide, lead, or steel) embedded in a polymer matrix to create a vibration dampening composition specifically effective for high impact riveting applications. This composite structure provides the necessary protection against high-frequency vibrations while maintaining durability for heavy-duty operations.
3Object-affected harmful factors
If recoilless rivet gun is used, then gentler impact is provided, but drive time increases and vibration remains
Solution Approach 1:
The patent applies parameter changes by modifying the physical properties of the rivet gun through incorporation of high density particles in the coating or handle. This changes the mass distribution and vibration characteristics of the tool, providing vibration attenuation and ergonomic benefits while maintaining the original drive time and impact characteristics of the percussive tool.
4Ease of operation
If mass is added to bucking bars, then ergonomics improve, but adding mass to rivet guns is not known
Solution Approach 1:
The patent applies composite materials by embedding high density metal particles (tungsten carbide, lead, or steel) within a polymer matrix to create a vibration dampening coating that can be applied to rivet gun handles or bodies. This provides mass addition and vibration attenuation in a unified coating system rather than separate components.
Solution Approach 2:
The patent applies parameter changes by modifying the density and mass distribution of the rivet gun through incorporation of high density particles in the coating formulation. This changes the tool's ergonomic properties and vibration characteristics without requiring structural modifications or additional components.
5Strength
If metal rivet gun is used on metal structures, then tool strength is sufficient, but tool instability and unwanted tool marks occur
Solution Approach 1:
The patent applies composite materials by creating a coating system with high density metal particles embedded in a polymer matrix that can be applied to the rivet gun. This composite coating provides vibration dampening and improved stability while maintaining the underlying metal tool's structural strength.
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 coating system effectively attenuates vibration, reduces ergonomic stress, and enhances control over the tool, particularly during high-impact operations, while maintaining tactile feedback and improving installation efficiency.
Implementation Method 1
The coating thickness and the amount of high density metal pellets are sufficient to provide an attenuation of vibration of the coated article and a reduced risk of unwanted ergonomic effects
Data Source
AI summary
A coating applied to an article is provided. The coating has an adhesive material, in contact with at least one substrate of the article. The coating has a plurality of high density metal pellets disposed in the adhesive material. The high density metal pellets are in an amount of at least 90% by weight of the total weight percent of the coating, and each high density metal pellet has a diameter of at least 0.04 inch. The coating further has a polymer material. The coating is applied to the at least one substrate of the article to obtain a mass-enhanced, coated article. The coating has a coating thickness of at least 0.25 inch. The coating thickness and the amount of high density metal pellets are sufficient to provide an attenuation of vibration of the coated article and a reduced risk of unwanted ergonomic effects.