Polymer Foam Wedge Holder for Log Splitting
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Solution Overview
Problem
Existing wood splitting methods, such as handheld tools and powered splitters, pose safety risks and are either expensive or immobile, necessitating a safer and more efficient apparatus for log splitting.
Innovation Solution
A wedge holder system utilizing a compressible polymer foam block with slots and notches to securely hold wedges, allowing for precise placement and reduction of physical effort during log splitting, while being portable and adaptable to various log sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handheld tools such as axes and wedges are used for log splitting, then the tool is portable and inexpensive, but the user faces safety risks including hand injury and inaccurate strikes
Solution Approach 1:
The foam block serves as an intermediary device that holds the wedge in a fixed position, mediating between the user and the log. This eliminates the need for the user to directly hold the wedge, thereby removing hand injury risks while ensuring accurate strike placement through the pre-positioned wedge.
2Power
If powered splitters are used for log splitting, then the splitting power and precision are improved, but the device becomes expensive and immobile
Solution Approach 1:
The foam block is designed to be self-positioning through its concave top surface that conforms to the rounded side of the log. This self-service mechanism eliminates the need for complex positioning systems or power sources, maintaining portability while achieving reliable wedge placement for effective splitting.
3Force
If a single large wedge is used for log splitting, then the splitting force is concentrated, but the device cannot handle various log sizes and shapes
Solution Approach 1:
The foam block is segmented with multiple slots of different sizes and configurations, allowing different wedge types and sizes to be used depending on the log dimensions. This segmentation provides adaptability for various log sizes while maintaining concentrated splitting force through proper wedge selection.
4Adaptability or versatility
If the foam block slots are made wide enough to accommodate large wedges, then the versatility is improved, but the structural integrity of the foam block may be compromised
Solution Approach 1:
The foam block exhibits local quality variations with denser material around the slots to maintain structural integrity while having sufficient width to accommodate different wedge sizes. This localized reinforcement allows the slots to be wide enough for versatility without compromising the overall strength of the foam block.
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 wedge holder system enhances safety by reducing hand injury risks, improves splitting efficiency through shared fracturing forces, and is cost-effective and versatile for different log sizes and shapes, including kindling preparation.
Implementation Method 1
a compressible, substantially cuboid, polymer foam block member
Implementation Method 2
the slot portion further designed to stretch without tearing to at least the maximum width of the at least one first wedge member
Data Source
AI summary
A wedge holder system and kit and method for splitting a log having a polymer foam block member with a concave top surface forming a basin with raised left and right longitudinal sides paralleling a center axis, the top surface designed to conform to a rounded side of a log. A planar bottom surface of the block member is designed to rest on a log cross section. At least one slot portion through the foam block member is designed to hold an at least one metal wedge member vertically to drive the metal wedge into a log. At least one V-shaped notch portion for holding wood vertically may be disposed within at least one exterior longitudinal side portion of the polymer foam block member. Polymer foam block members may be adjacent or coupled lengthwise or vertically.