Lateral Harpoon Tips for Hunting Gear

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Solution Overview

Problem

Conventional hunting and fishing gear with harpoon tips at the end of a haft is not suitable for wielding and often loses sharpness when used for piercing, as the tips can hit the river bottom and become dull.

Innovation Solution

A hunting and fishing gear design with harpoon tips protruding laterally from a harpoon body, featuring a first space part with a barb for enhanced piercing and a second space part with a come-off prevention section to prevent damage and escape of prey, made from materials like metal plates via press or laser processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If harpoon tips are positioned at the end of a haft for piercing, then piercing function is improved, but the tips easily hit the river bottom and lose sharpness

Engineering Contradiction:

Improvepiercing functionVSAvoidloss of sharpness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The harpoon tips are repositioned from the longitudinal end of the haft to lateral positions on the harpoon body, changing the spatial dimension of the piercing action. This dimensional shift allows the tips to pierce prey from the side rather than from the end, reducing the risk of hitting the river bottom while maintaining piercing effectiveness

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If harpoon tips protrude laterally from the harpoon body, then ease of wielding is improved, but prey may escape more easily

Engineering Contradiction:

ImprovewieldingVSAvoidprey capture retention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The harpoon tips are configured with asymmetric features including barbs that protrude in specific directions and come-off prevention sections positioned strategically. This asymmetry ensures that when the harpoon strikes prey, the barbs engage to prevent escape while the overall lateral configuration maintains ease of wielding

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The barbs and come-off prevention sections are pre-configured on the harpoon tips to automatically engage with prey upon impact. This preliminary anti-action prevents prey escape before the hunter can react, combining ease of wielding with reliable capture retention

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS11832604B2Hunting and fishing harpoon machete

Publication Date: 2023.12.05 HORIUCHI MFG

AI summary

A hunting and fishing gear includes a haft (1), a harpoon body (2) extending in a longitudinal direction of the haft (1) from one end of the haft (1), and a plurality of harpoon tips (3) extending in a lateral direction Y from one side portion of the harpoon body (2) in a direction intersecting the longitudinal direction X of the harpoon body (2), and a barb (5) or a come-off prevention section (11; 12) provided to protrude into a space part (4) from at least one of the harpoon tips (3) located in the space part (4). Therefore, when a person grips a handle (7) with the person's hand (17) to use the hunting and fishing gear by swinging it in the direction of an arrow Z, the plurality of harpoon tips easily pierce a prey.