Ballistic Transparency Flexible Mounting Member

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Solution Overview

Problem

Conventional methods for mounting ballistic transparencies in vehicles are either difficult and time-consuming or prone to failure under extreme loading, leading to potential detachment and exposure of occupants to hazards.

Innovation Solution

A ballistic transparency comprising multiple plies with a polymeric layer and flexible mounting members, where the flexible members extend beyond the peripheral edges to engage with a vehicle frame, providing additional securement and reinforcement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a ballistic transparency is mounted using a projecting lip method, then the mounting is simpler and does not require specially fabricated frames, but under extreme loading the projecting lip can break or crack causing detachment

Engineering Contradiction:

Improvemounting simplicityVSAvoidsecurement under extreme loading

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The mounting system is divided into two independent components: the projecting lip of the transparency and the flexible mounting member. This segmentation allows each component to perform its specific function - the lip provides structural engagement while the flexible member provides redundant securement that prevents detachment even if the lip fails under extreme loading.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The flexible mounting member acts as a pre-installed safety mechanism that compensates for potential failure of the primary mounting structure. By incorporating this flexible securement element in advance, the system ensures that even if the projecting lip breaks or cracks under extreme loading, the transparency remains securely mounted.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If a ballistic transparency is mounted inside a specially fabricated metal casement, then the securement is more reliable, but the mounting process becomes difficult and time consuming

Engineering Contradiction:

Improvesecurement reliabilityVSAvoidmounting time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The invention extracts the flexible mounting member from the complexity of specially fabricated casements and applies it directly to conventional vehicle window frames. This eliminates the need for difficult and time-consuming installation into custom casements while maintaining securement reliability through the flexible member's redundant attachment system.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The flexible mounting member can be applied to various mounting scenarios - both conventional vehicle window frames and specially fabricated casements - making it a universal solution that works across different installation contexts without requiring custom fabrication, thereby reducing mounting time while maintaining reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the peripheral edge of one glass pane extends beyond other panes to form a projection, then no specially fabricated frames are required, but the projection can break or crack under extreme loading

Engineering Contradiction:

Improvecompatibility with conventional framesVSAvoidresistance to extreme loading

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The mounting system combines the rigid projecting lip (providing structural engagement with conventional frames) with the flexible mounting member (providing shock absorption and crack prevention). This composite approach allows the transparency to work with conventional frames while the flexible component compensates for the brittleness of the glass projection under extreme loading conditions.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The flexible mounting member serves as an intermediary between the rigid glass projection and the frame. It absorbs and distributes the stresses from extreme loading, preventing the direct transmission of forces that would cause the brittle glass projection to break or crack, while still maintaining the adaptability to conventional frame structures.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enhances the securement and durability of ballistic transparencies, preventing detachment even under extreme conditions such as explosive detonations or high-velocity impacts, thus ensuring occupant safety.

Implementation Method 1

a first interlayer ply positioned between the inner and outer glass plies to bond the glass plies together

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

at least one flexible mounting member having a first end extending within the polymeric layer and a second end extending beyond the peripheral edges of the first and second plies

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS8905460B2Ballistic transparency

Publication Date: 2014.12.09 PPG INDUSTRIES OHIO INC

AI summary

A ballistic transparency includes a first ply having a peripheral edge; a second ply spaced from the first ply and having a peripheral edge; a polymeric layer located between the first ply and the second ply; and at least one flexible mounting member having a first end extending within the polymeric layer and a second end extending beyond the peripheral edges of the first and second plies.