Foot-Powered Pick Tools for Compacted Soil and Root Removal
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Solution Overview
Problem
Existing tools are laborious and time-consuming for penetrating compacted or stony soils, often causing damage to tools and utilities, and fail to efficiently remove weeds with their roots without damaging lawns or utilities.
Innovation Solution
A multipurpose foot-powered system comprising a kick-pick tool with a hooded blade and integral footrest, and a twist-pick tool with an adjustable footrest and T-shaped crossbar, designed to break up compacted earth and facilitate efficient digging and weeding tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional tools like shovels or post hole diggers are used to penetrate compacted or stony soils, then the tools can be inserted into the ground, but the work is laborious, time-consuming, and causes damage to the tool
Solution Approach 1:
The tool is divided into distinct functional segments: a hooded pick tip for breaking up compacted soil, a curved blade for cutting, and a footrest for powered insertion. This segmentation allows each component to perform its specific function efficiently, resolving the contradiction between ease of operation and productivity.
Solution Approach 2:
The tool combines multiple functions in a single device: the hooded pick breaks up compacted soil, the curved blade cuts through material, and the footrest enables powered insertion. This multi-functionality eliminates the need for multiple separate tools, improving both ease of operation and productivity simultaneously.
2Strength
If a pick-axe or digging bar is used to break up compacted soil, then the tool fares better than a shovel, but the work is still challenging and relies on upper body strength
Solution Approach 1:
The footrest component allows the user to transfer body weight directly into the tool, using gravitational force to drive the hooded pick into compacted soil. This counteracts the limitation of upper body strength by leveraging the user's body weight and gravity to provide the necessary penetrating force.
Solution Approach 2:
The tool is designed to be self-powered through foot application, eliminating the need for complex mechanical power sources. The user's foot power directly drives the hooded pick into the soil, making the system self-sufficient and eliminating reliance on upper body strength or external power sources.
3Productivity
If conventional tools are used to remove weeds with roots, then the weeds can be removed, but the user can't see the roots and may damage the lawn
Solution Approach 1:
The hooded pick is used first to break up and loosen the compacted soil and expose the root system before removal. This preliminary action allows the user to see and locate the roots clearly, enabling precise removal without damaging the lawn or utilities underneath.
Solution Approach 2:
The hood acts as an intermediary that breaks up the compacted soil layer, providing visual access to the roots and utilities below. This intermediary action allows the user to distinguish between weed roots and utility lines, preventing damage while maintaining high removal productivity.
4Ease of operation
If shovels or pick-axes are used to remove weeds, then the weeds can be removed, but buried utility and sprinkler lines may be damaged even when location is generally known
Solution Approach 1:
The hooded pick performs preliminary breakdown of the soil structure before any cutting or removal action. This preliminary action exposes the root system and utilities in advance, allowing the user to identify and avoid utility lines before attempting removal, thereby eliminating the risk of damage while maintaining ease of operation.
Solution Approach 2:
The hood serves as an intermediary that provides visual access to buried utilities and roots. By breaking up the compacted soil layer first, the hood allows the user to see and locate utility lines before attempting removal, enabling careful operation that protects utilities while maintaining operational ease.
5Productivity
If the hood is placed close to the tip of the blade, then the capacity to break up soil structure is extended, but the device's insertion into the ground is hindered
Solution Approach 1:
The hood is positioned at a specific local location on the blade where it provides maximum benefit for breaking up soil structure without interfering with the tip's insertion capability. This local optimization allows the hood to enhance productivity while the tip maintains ease of insertion into compacted soils.
Data Source
AI summary
A multipurpose foot-powered system is disclosed which is a set of foot-powered and hand-operated tools which break up the structure of compacted earth. Specifically, the system comprises a kick-pick tool and a twist-pick tool. The kick-pick tool measures approximately 5-6 feet in length. It resembles a shovel with a hooded steel pick or hooded chisel tip for a blade. The blade is slightly curved like a shovel and an integral footrest is positioned at a convenient distance from the tip of the hooded blade, which will allow the user to drive the hooded blade into the earth with their foot. The twist-pick tool is similar in design, however the tool is entirely straight from its tip through its handle. The footrest height is adjustable by the user and the handle has a T-shaped crossbar that enables a user to twist the hooded blade about the long axis of the twist-pick.