Partitioned Projectile for Hand-Held Firearms

Solution Overview

Problem

Conventional soft plastic or rubber projectiles for hand-held firearms lack precision due to non-rotation in the barrel, resulting in imprecise targeting when fired.

Innovation Solution

A partitioned projectile with a harder polyethylene or polypropylene base and a softer polyurethane nose, designed to rotate accurately within the barrel, is combined with a cartridge case and explosive charge, featuring a sealing ring arrangement for precise targeting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a soft plastic or rubber projectile is used, then the projectile can temporarily disable a target without killing properties, but the projectile does not rotate in the barrel resulting in imprecise flight and difficult targeting

Engineering Contradiction:

Improvelethality controlVSAvoidtargeting precision

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The projectile is divided into two distinct parts: a harder base portion and a softer nose portion. This segmentation allows the base to provide structural integrity and rotation stability while the nose maintains the less-lethal characteristics for target impact.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different materials are applied to different parts of the projectile. The base is made from harder plastic (polyethylene or polypropylene) to enable rotation and stability, while the nose is made from softer plastic (polyurethane) to reduce lethality upon impact.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If a harder plastic projectile is used, then the projectile rotates accurately in the barrel improving precision, but the projectile gains killing properties and loses less lethal characteristics

Engineering Contradiction:

Improvetargeting precisionVSAvoidlethality control

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The projectile is divided into two distinct parts: a harder base portion and a softer nose portion. This segmentation allows the base to provide structural integrity and rotation stability while the nose maintains the less-lethal characteristics for target impact.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different materials are applied to different parts of the projectile. The base is made from harder plastic (polyethylene or polypropylene) to enable rotation and stability, while the nose is made from softer plastic (polyurethane) to reduce lethality upon impact.

Inventive Principle:

Principle #3Local quality

3Measurement precision

If a partitioned projectile with different materials is used, then rotation and precision are improved, but the complexity of manufacturing and assembly increases

Engineering Contradiction:

Improvetargeting precisionVSAvoidprojectile structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The harder base portion and softer nose portion are combined into a single integrated projectile structure that functions as one unit. The sealing ring connects the two parts, allowing them to be manufactured separately and then assembled together.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The softer nose portion is inserted into or attached to the harder base portion, creating a nested or layered structure where one component fits within or upon another, simplifying the overall assembly process.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP3042145B1Partitioned projectile

Publication Date: 2019.04.24 AREX PROIZVODNJA ORODIJ NAPRAV IN STORITVE D O O SENTJERNEJ

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AI summary

The object of the invention is a partitioned projectile designed especially for hand-held firearms such as a cartridge of a gun or a pistol, wherein the bullet is made from a combination of solid and soft plastics or of a similar material and intended to temporarily disable a target or to cause minor trauma. The partitioned projectile consists of a bottom part 2 of the projectile and an upper part 3 of the projectile. The bottom part 2 of the projectile is made from a harder polyethylene (PE) or polypropylene (PP) plastic, whereas the upper part 3 of the projectile is made from a softer polyurethane plastic (TPU).