Portable Saw Handle With Watertight Blade Storage And Limb Extension

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Solution Overview

Problem

Existing portable hand saws for sportsmen and hunters lack versatility, dependability, and waterproof storage, often requiring separate carrying of blades which can rust in wet conditions and are expensive due to specialized designs, and fail to extend reach for cutting higher limbs.

Innovation Solution

A portable saw with a watertight compartment in the handle to store a standard saw blade, featuring a threaded top with an O-ring seal and a cap assembly that securely holds the blade, allowing easy access and waterproofing, along with a limb attachment to extend the saw's reach.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the saw blade is stored separately from the handle, then the handle design is simpler, but the blade can get lost, rust in wet weather, and requires more carrying space

Engineering Contradiction:

Improvehandle design simplicityVSAvoidblade protection and portability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The saw blade is stored inside the hollow handle cavity, with the blade nesting within the handle structure. The handle serves as a container for the blade, eliminating the need for separate carrying while protecting the blade from rust and loss.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The storage function and handle function are merged into a single integrated structure. The handle simultaneously serves as both the gripping component and the storage container for the blade, reducing the number of separate components needed.

Inventive Principle:

Principle #5Merging (Combining)

2Volume of moving object

If the blade is placed inside the handle for storage, then the saw size is reduced and waterproofing is improved, but the handle structure becomes more complex

Engineering Contradiction:

Improvesaw size when storedVSAvoidhandle structure

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The blade is nested within the hollow handle cavity, allowing the saw to be compact when stored. The blade fits inside the handle's internal space, reducing the overall volume of the tool when not in use.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If a specially designed blade is used, then the blade can be stored in the handle, but the saw becomes expensive to make and blades are hard to find

Engineering Contradiction:

Improveblade storage capabilityVSAvoidmanufacturing cost and blade availability

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The handle is designed with a universal cavity that can accommodate standard saw blades. The storage system works with conventional blades rather than requiring specialized custom blades, maintaining compatibility with widely available components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Device complexity

If the handle is designed without waterproofing, then the structure is simpler, but the blade can rust in wet weather

Engineering Contradiction:

Improvestructure simplicityVSAvoidblade rusting

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

An O-ring seal is used to create a waterproof barrier within the handle structure. The flexible O-ring prevents water from reaching the blade stored inside the handle, protecting it from rust while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #30Flexible shells and thin films

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 solution provides a lightweight, versatile, and waterproof portable saw that can be easily carried and used to cut higher limbs, with standard blades available in hardware stores, ensuring reliability in inclement weather and reducing the risk of blade loss or rusting.

Implementation Method 1

Within the threaded opening, an O-ring is placed at the top so that when the cap is threaded on the handle, the O-ring will be compressed. The tightening of the cover and the handle seals the compartment and makes it watertight.

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS9610701B1Pocket hand saw with limb extender

Publication Date: 2017.04.04 YOST CHAD

AI summary

This invention is a small portable saw for hunters in which the blade of the saw can be stored in a watertight compartment in the handle. The handle can be replaced with an attachment that enables the saw to be attached to a tree limb. This extends the distance the saw can reach. The top of the saw includes a saw blade and a cap with a threaded opening in its bottom. The cap is designed to allow for easy removal of the saw blade. The cap can be attached to a handle that has a watertight compartment for storage of the saw blades or an attachment that enables the cap to be attached to a tree limb to extend the reach of the saw. The attachment threads into the cap and a tree limb is threaded into the attachment's bottom.