Multi-Bladed Axe Integrating Kerambit Curves and Hammer

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Solution Overview

Problem

The traditional kapak kecil, a small axe used in Silat, lacks modernization and versatility, making it ineffective against modern fighting styles and limited in functionality.

Innovation Solution

A multifunctional survival tool, 'Berantai Lightning,' featuring a handle with an axe blade and a straight knife blade, incorporating curved surfaces for kerambit functionality, a sharpened point or hammer-like feature, and a design that allows for various grip positions and attachment options, including a fire starter and storage compartment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the traditional kapak kecil is used, then it maintains simplicity and ease of manufacture, but it lacks versatility and effectiveness against modern fighting styles

Engineering Contradiction:

ImprovefunctionalityVSAvoidcomplexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The axe head is designed with multiple functional elements: a cutting edge for chopping, a curved blade portion for slashing and piercing, and a hammer surface for striking. This allows a single tool to perform multiple functions (chopping, slashing, piercing, striking) that would traditionally require separate weapons, directly resolving the contradiction between versatility and complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The axe blade is divided into distinct functional zones: the primary cutting edge, the curved slashing blade, and the hammer surface. Each zone is optimized for specific combat functions, allowing the weapon to adapt to different fighting scenarios while maintaining a unified structure that doesn't significantly increase complexity

Inventive Principle:

Principle #1Segmentation

2Strength

If the axe blade is made thicker for strength, then it increases durability and striking power, but it increases weight and reduces maneuverability

Engineering Contradiction:

Improveblade strengthVSAvoidweapon weight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The axe blade thickness varies by location: thicker at the cutting edge and hammer surface where strength and impact resistance are needed, and thinner toward the handle where weight reduction improves maneuverability. This non-uniform thickness distribution optimizes the strength-to-weight ratio by placing material only where structurally necessary

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If curved surfaces are added to the axe blade for kerambit functionality, then it enhances slashing and piercing capability, but it complicates the manufacturing process

Engineering Contradiction:

Improveslashing capabilityVSAvoidmanufacturing ease

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The curved slashing blade is integrated into the same piece of metal as the primary cutting edge and hammer surface, forming a unified axe head. This merging of functions into a single component achieves kerambit-like slashing capability without requiring separate parts or complex assembly, thereby limiting the increase in manufacturing complexity

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11453134B2Multi-bladed axe

Publication Date: 2022.09.27 OTHMAN ABDUL RAZAK BIN

AI summary

A multi-purpose weapon comprising a handle, an axe blade, and a straight knife blade. The axe blade includes a chopping surface, and two curved surfaces, which, when sharpened, allow the weapon to be used in a similar manner to a kerambit. Thus, in a single weapon, the user can use the straight knife blade, the axe blade, and the one or two curved blades.