Compound Blade Material Handling Tool with Dual-Function Head

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Solution Overview

Problem

Existing combination snow shovels and ice choppers face issues such as the need to invert the tool end-to-end for use, wet and dirty handles, separate attachments for each function, and lack of structural integrity to withstand vigorous digging and chopping of compacted snow and ice.

Innovation Solution

A tool with an elongated handle and a compound head featuring a first tool section for shoveling/digging at less than 30 degrees and a second tool section for chopping/scraping at more than 60 degrees, allowing easy rotation between functions without inverting the tool, and providing ergonomic comfort and structural sturdiness for repetitive tasks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the ice chopper is located on the handle of the shovel, then the device can function as both shovel and ice chopper, but the handle becomes wet and dirty and the device must be completely inverted to use

Engineering Contradiction:

Improvecombination of shovel and ice chopper functionsVSAvoidhandle contamination and inversion requirement

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The tool is divided into distinct functional sections: a shovel blade section and a separate ice chopper section, each optimized for its specific function. The ice chopper is positioned at the distal end of the shaft while the shovel blade is at the proximal end, allowing independent use of each function without contamination of the handle.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of mounting the ice chopper on the handle requiring end-to-end inversion, the invention positions the ice chopper at the distal end of the shaft, allowing the user to simply rotate the tool 180 degrees at the shaft-handle connection point. This eliminates handle contamination while maintaining functional versatility.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If a separate attachment is added for ice chopping, then each function can be optimized, but the device complexity increases and requires attachment changes

Engineering Contradiction:

Improveseparate optimized functionsVSAvoidattachment management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention merges the shovel blade and ice chopper into a single integrated tool body, with both functions permanently attached to the shaft. The shovel blade is mounted at one end of the shaft while the ice chopper is mounted at the other end, eliminating the need to attach or detach separate components. This reduces device complexity while maintaining functional versatility.

Inventive Principle:

Principle #5Merging (Combining)

3Force

If the ice chopper transfers impact vertically up the handle, then the chopping force is effective, but the repetitive motion creates excessive stress on the user

Engineering Contradiction:

Improveice breaking impactVSAvoiduser stress from repetitive motion

Core Design Contradiction:

ForceVSStress or pressure

Solution Approach 1:

The invention extracts the ice chopper from the handle area and positions it at the distal end of the shaft. This repositioning changes the impact pathway so that force is applied through the shaft structure rather than directly up the handle, reducing the transmission of repetitive impact stress to the user's hands and arms while maintaining effective ice-breaking capability.

Inventive Principle:

Principle #2Taking out (Extraction)

4Ease of operation

If the tool is designed for pushing and pulling snow, then it is suitable for fresh snow, but it lacks the structural integrity to withstand vigorous digging and chopping

Engineering Contradiction:

Improvepushing and pulling functionVSAvoidstructural integrity for aggressive digging

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The invention employs a composite construction with a long sturdy shaft providing structural strength and rigidity, combined with a shovel blade and ice chopper made of materials optimized for cutting and chopping. This composite design allows the tool to withstand the high stresses of vigorous digging and chopping while maintaining the pushing and pulling functionality for fresh snow.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS8256809B2Material handling tool

Publication Date: 2012.09.04 TC TOOLS INC

AI summary

A tool for manipulating a material, such as snow, ice, sand, salt, dirt, gravel, concrete, vegetation, grains, debris and the like, resting on a surface has an elongated handle, an elongated shaft, and a compound blade head. The handle is attached to a proximal end of the elongated shaft and the compound blade is fixed to a distal end of the elongated shaft. The tool is capable of pushing and pulling materials when operating either the first tool section or the second tool section. The compound blade head has a first tool section adapted generally for shoveling and digging and a second tool section adapted for chopping and scraping. Tamping, compressing, and leveling is achieved when using the tools in the shoveling/digging position. The structure of the tool is designed to endure the stresses and forces of aggressive and repeated operating.