Bullet Resistant Rolling Door Panel Design

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Solution Overview

Problem

Existing ballistic barriers and security doors often allow bullets to ricochet rather than absorb their energy, posing a danger to people and property nearby, and are heavy and difficult to install and maintain.

Innovation Solution

A rolling overhead garage door formed from interconnected panels with interlocking shell members and ballistic material, including a sheet of pressed ballistic material and insulating foam, which provides both bullet resistance and impact resistance by absorbing energy and preventing penetration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If ballistic barriers are formed of bullet resistant metal, then bullet resistance is improved, but weight increases and ease of operation deteriorates

Engineering Contradiction:

Improvebullet resistanceVSAvoidease of installation and maintenance

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The ballistic barrier is divided into multiple modular panels that can be easily assembled and disassembled. Each panel contains ballistic-resistant material but the overall structure is segmented into manageable units that are much easier to install and maintain than a single large metal barrier.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention uses composite construction combining ballistic-resistant material with lighter weight materials. The panels incorporate ballistic-resistant layers combined with structural supports and framing that reduce overall weight while maintaining bullet resistance capabilities.

Inventive Principle:

Principle #40Composite materials

2Reliability

If security door is formed with steel core to resist bullet penetration, then bullet resistance is improved, but bullets ricochet creating dangerous situations

Engineering Contradiction:

Improvebullet resistanceVSAvoidbullet ricochet

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The ballistic material is specifically selected and configured to absorb and dissipate bullet kinetic energy through deformation and friction, converting the harmful ricochet effect into beneficial energy absorption. The material structure causes bullets to embed rather than ricochet, transforming a dangerous ricochet scenario into a controlled energy dissipation process.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If ballistic barrier panels are made heavy for bullet resistance, then bullet resistance is improved, but installation and maintenance difficulty increases

Engineering Contradiction:

Improvebullet resistanceVSAvoidinstallation and maintenance

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The barrier system is segmented into standardized panels of manageable size and weight that can be easily handled, transported, and installed by conventional means. Each panel maintains adequate ballistic protection while the modular design allows for simple assembly and maintenance operations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention optimizes the thickness and material composition parameters of the ballistic layers to achieve the required level of protection with minimum weight. By carefully selecting material properties and layer configurations, the panels achieve effective bullet resistance at reduced weight compared to solid metal construction.

Inventive Principle:

Principle #35Parameter changes

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 effectively absorbs bullet energy, preventing penetration and ricochets, while being lightweight and easy to install, offering quick deployment and enhanced security against ballistic threats.

Implementation Method 1

ballistic material placed within the internal cavity to resist the passage of bullets through each panel

Methodology Applied

Scientific EffectEnergy absorption: Deformation

Implementation Method 2

absorbing energy and preventing penetration

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

interconnected panel members having interlocking shell members with interengagable barbs to secure the two shell members with one another

Methodology Applied

Scientific EffectMechanical interlocking: Mechanical Fastener

Data Source

PatentUS20240125170A1Bullet resistant rolling overhead door

Publication Date: 2024.04.18 GLICK AMOS B

AI summary

A bullet resistant and impact resistant overhead rolling door is created from a plurality of interconnected panel members formed from inner and outer shell members having interengagable barbs to secure the two shell members with one another when assembled. The two shell members create an internal cavity within the panel for housing ballistic material, such as a sheet of pressed ballistic material, insulating foam and/or a sheet of metal to increase ballistic resistance of the panel. A sheet of ballistic material can be secured between the interengaged barbs of adjacent panel members to serve as a hinge and permit pivotal movement therebetween. The shell members can be formed from metal with the ballistic material providing bullet resistant protection, but are preferably formed of 6063 aluminum to enhance the bullet resistance of the panel members.