Stump Removal Tool Anchor and Lead Screw Cutting
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Solution Overview
Problem
Existing portable tree stump removers are often cumbersome, heavy, expensive, and require external supports or towing, making them inefficient and difficult to use.
Innovation Solution
A portable stump removal tool with an anchor and a lead screw mechanism that adjusts between open and closed configurations, allowing for self-contained cutting of tree stumps without external supports, using a cutting assembly with pivotable arm assemblies and blade plates that can be adjusted for effective stump severance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If prior portable tree stump removers use wheels and external supports for transport and operation, then the device can move to job sites and support itself during cutting, but the device becomes heavy, cumbersome, and requires towing
Solution Approach 1:
The invention removes wheels and external support structures from the device, extracting only the essential cutting function. The anchor system is directly secured to the stump, eliminating the need for separate support mechanisms and reducing overall device weight while maintaining operational capability.
Solution Approach 2:
The device anchors itself directly to the stump using an anchor that secures to the stump surface, making the stump itself the support structure. This self-service approach eliminates external supports and reduces device complexity, allowing the tool to operate without additional transportation or support equipment.
2Ease of manufacture
If prior stump removers use complex mechanisms with multiple components, then the device can perform cutting functions, but the device becomes complicated and expensive
Solution Approach 1:
The device is divided into three essential functional segments: an anchor for securing to the stump, a lead screw for converting rotational motion to linear cutting motion, and blade plates for the actual cutting. This segmentation simplifies manufacturing by focusing on core functions while eliminating unnecessary components.
Solution Approach 2:
The invention replaces complex mechanical cutting mechanisms with a lead screw system that converts simple rotational motion into precise linear movement of the blade plates. This substitution simplifies the overall mechanism while maintaining effective cutting capability, reducing both manufacturing complexity and device cost.
3Adaptability or versatility
If the cutting assembly uses fixed blade positions, then the structure is simple, but the device cannot adapt to different stump sizes and configurations
Solution Approach 1:
The blade plates are made dynamic through the lead screw mechanism, allowing their position to be adjusted along the central axis based on stump size and configuration. The lead screw converts rotational input into precise linear positioning, enabling the blade plates to adapt to different cutting depths and stump dimensions while maintaining a relatively simple overall structure.
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
Enables efficient and self-contained stump removal without the need for external supports or heavy equipment, improving portability and reducing operational complexity and costs.
Implementation Method 1
a lead screw extending along a central axis of the stump removal tool and configured to selectively couple to the anchor. The lead screw is rotatable to adjust the stump removal tool between an open configuration in which each blade plate is located distant from the central axis, and a closed configuration in which each blade plate is located proximate the central axis
Implementation Method 2
an anchor configured to be fixedly secured to the tree stump
Implementation Method 3
a plurality of arm assemblies coupled to the lead screw, each arm assembly including a blade plate
Data Source
AI summary
A stump removal tool operable to sever a tree stump. The stump removal tool including an anchor fixedly couplable to the stump, and a cutting assembly adjustable between a closed position and an open position, and where the cutting assembly is removably couplable to the anchor.