Speed Drum Curved Walls One-Handed Ammo Access

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Solution Overview

Problem

Current ammunition storage solutions for automatic weapons are cumbersome and difficult to access with one hand, leading to delays and safety risks during reloading, as they lack stability and security, causing soldiers to lose control of their weapons.

Innovation Solution

The speed drum, a sturdy and flexible container with curved side walls and a flexible cord, provides secure and accessible storage for ammunition, maintaining its shape and position, allowing for quick and efficient reloading without compromising weapon control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If ammunition is stored in a cloth or flimsy pouch, then the pouch can be easily manufactured and worn, but the pouch cannot maintain its shape or position when ammunition is removed, making it difficult to access and manipulate with one hand

Engineering Contradiction:
Improveease of manufactureVSAvoidease of operation
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The pouch uses a flexible polymer material that maintains structural integrity while allowing movement. The material is stiff enough to hold its shape during manipulation but flexible enough to be comfortable and adaptable to the wearer's body, resolving the contradiction between manufacturability and operational ease

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The pouch features curved or rounded edges and contours that prevent snagging on equipment and allow smoother manipulation with one hand. The curved design maintains structural integrity while improving accessibility, addressing the shape stability issue

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Quantity of substance

If ammunition is stored in a large pouch positioned at the exterior of the IOTV, then the pouch provides storage capacity, but the pouch is difficult to access and manipulate with a single hand, requiring both hands and causing loss of weapon control

Engineering Contradiction:
Improvestorage capacityVSAvoidease of operation
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The flexible polymer construction allows the pouch to maintain a compact, manageable size while still providing adequate storage capacity. The material's properties enable the pouch to be manipulated with one hand, resolving the contradiction between storage needs and operational ease

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The pouch can be designed as a modular component that attaches to the IOTV, allowing it to be positioned for optimal one-handed access while maintaining storage capacity. The segmented design enables independent manipulation from the weapon system

Inventive Principle:
Principle #1Segmentation

3Weight of moving object

If the pouch is made from flimsy material, then the pouch can be lightweight and easy to wear, but the pouch will not maintain its shape or position, leading to delays during reloading

Engineering Contradiction:
ImproveweightVSAvoidshape stability
Core Design Contradiction:
Weight of moving objectVSStability of the object's composition

Solution Approach 1:

The pouch utilizes composite polymer materials that combine light weight with structural stability. The composite construction provides both the low weight needed for mobility and the shape stability required for easy manipulation, resolving the contradiction between these two properties

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The flexible polymer material creates a shell structure that maintains shape integrity without adding significant weight. The material's inherent flexibility provides structural support while keeping the pouch lightweight, addressing the contradiction between weight and shape stability

Inventive Principle:
Principle #30Flexible shells and thin films

4Reliability

If the user uses both hands to deal with the ammunition pouch, then the pouch can be securely manipulated, but the user must lose control of the weapon, creating safety risks

Engineering Contradiction:
ImprovereliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The flexible polymer pouch maintains sufficient structural integrity to be securely manipulated with one hand, eliminating the need to release weapon control. The material properties enable reliable operation while maintaining ease of one-handed manipulation, resolving the contradiction between reliability and operational ease

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 speed drum enables rapid and secure reloading of ammunition, minimizing delays and ensuring continuous operation by maintaining the ammunition's position and providing easy access with one hand, thus enhancing user maneuverability and safety.

Implementation Method 1

The curved midsection of the side walls adds friction and pressure to maintain the position of the ammo drum inside the speed drum

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS10788299B2Speed drums
Publication Date: 2020.09.29 SCHANDELMEIER CHAD
  • US10788299B2 patent drawing
  • US10788299B2 patent drawing
  • US10788299B2 patent drawing

AI summary

The speed drum is a storage container for spare ammunition for squad automatic weapons or machine guns. It is comprised of a bottom wall, front wall, back wall, side walls, side braces, connecting clips, and a flexible cord. Users can store, access, and replace ammunition single handedly, in a quick manner without removing both hands from their weapon. The side walls are curved, in the middle, to increase tension on the ammunition placed inside the speed drum and curved at the top, to reduce friction and snagging of the ammunition. Side braces secure the front wall and back walls. Connecting clips secure the device to equipment straps on the user's clothing or tactical vest. A flexible cord, attached to both the front wall and back wall, may be placed over the ammo drum inside the speed drum for additional stability and security until the spare ammunition drum is required.