Adjustable Handle Multi-Tool with Quick-Release Coupling
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Solution Overview
Problem
There is a need for a compact storage solution for yard tools like shovels, rakes, and hoes that allows for easy access and use, particularly for homeowners and professionals who lack space for multiple tools and need to transport them efficiently.
Innovation Solution
An adjustable length yard tool with a quick-release mechanism, rotating coupling system, and durable materials like steel or aluminum, allowing the handle to extend from 4 to 7 feet, featuring a D-ring handle for comfort and control, and interchangeable tool heads for various tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate yard tools are purchased for different tasks, then task versatility is improved, but storage space requirements and cost increase
Solution Approach 1:
The patent implements a universal handle system that can accommodate multiple tool heads (shovel, rake, hoe, etc.) through a standardized quick-release mechanism. This allows a single handle to perform multiple gardening tasks, eliminating the need for separate tools for each function and thereby reducing storage space requirements.
Solution Approach 2:
The patent employs a telescopic handle design where the inner handle section can be inserted into the outer handle section, allowing the handle to be collapsed to a compact size for storage and expanded to full length for use. This nesting mechanism significantly reduces the storage footprint while maintaining full functionality when deployed.
2Adaptability or versatility
If traditional fixed-length handles are used, then structural simplicity is maintained, but adaptability to different tasks and user needs deteriorates
Solution Approach 1:
The patent transforms the static fixed-length handle into a dynamic adjustable-length handle through the implementation of a telescopic mechanism with locking features. The handle can be extended or retracted based on task requirements and user preferences, providing adaptability while maintaining structural integrity through properly engineered locking and support systems.
Solution Approach 2:
The patent divides the handle into multiple separable sections (inner and outer handle parts) that can move relative to each other. This segmentation allows for length adjustment while keeping each individual section structurally simple and manageable, avoiding the need for a complex monolithic structure.
3Ease of operation
If quick-release mechanisms are implemented for tool head interchangeability, then task versatility and ease of operation are improved, but device complexity increases
Solution Approach 1:
The patent implements a self-locking quick-release mechanism that automatically secures the tool head to the handle when connected, eliminating the need for separate fastening steps. The coupling system uses spring-loaded lugs or similar features that engage automatically with corresponding slots on the tool head, providing secure attachment through the inherent mechanical design rather than requiring additional fasteners or complex assembly procedures.
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 adjustable tool reduces storage space, lowers costs compared to multiple tools, and simplifies transport and use, providing a versatile solution for both storage and on-site use without the need for assembly or disassembly.
Implementation Method 1
A loose coil spring positioned with a first end against the upper face of the lower handle section and a second end of the upper handle section, the loose coil spring serves to aid in the automatic extension of the lower handle section when the long handle configuration of the adjustable length yard tool
Implementation Method 2
the tool head shaft provided with two engagement pins, the two engagement pins arranged at diametrically opposing sides from each another along the tool head shaft, the engagement pins engage two generally L-shaped pin slots in the rotating coupling system
Implementation Method 3
The threaded collar is moved along a second rotational travel path that is compressed or relaxed against the lower handle section where the slotted compression ring allows for no movement or movement
Data Source
AI summary
A multi-tool incorporates an extendable spring-loaded handle that accommodates interchangeable tool heads using a quick-connect slip fit connection. The spring-loaded handle is capable of securing a selected length of the multi-tool in a locked position.