Retrofitting Multi-Pane Windows with Anti-Ballistic Fluid
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Solution Overview
Problem
Existing buildings with multiple pane glass windows lack economical and non-invasive methods to convert them into anti-ballistic windows without replacing the windows, posing a concern for ballistic protection.
Innovation Solution
A method involving drilling holes in the window or frame and pumping a fluid with anti-ballistic properties into the gaps between panes, followed by vibration to settle the fluid and sealing the holes, using a portable system comprising a pump, tank, and distribution system, to enhance the window's ballistic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing multiple pane windows are converted to anti-ballistic windows by pumping fluid into gaps, then anti-ballistic protection is improved, but the complexity of the retrofitting process increases
Solution Approach 1:
The retrofitting process is divided into distinct segments: drilling holes in the window frame, pumping anti-ballistic fluid into the gaps between panes, sealing the holes, and optionally applying external reinforcement layers. This segmentation allows each step to be performed independently with specialized equipment, making the complex overall process more manageable and controllable.
Solution Approach 2:
The anti-ballistic fluid is injected into the existing gap space between window panes, nesting the protective material within the already-existing window structure. This approach utilizes the available internal volume of the window assembly, avoiding the need to replace the entire window while still achieving anti-ballistic protection.
2Ease of manufacture
If windows are retrofitted with anti-ballistic fluid without replacement, then cost is reduced, but the precision of fluid injection and distribution must be increased
Solution Approach 1:
A distribution system with multiple injection points and internal channels acts as an intermediary between the pump and the gap space. This intermediary network ensures uniform fluid distribution across large window areas, reducing the precision requirements for individual injection points while maintaining overall injection accuracy.
Solution Approach 2:
The retrofitting process applies different treatments to different regions of the window based on specific needs. Holes are drilled at strategically selected locations, and fluid injection parameters can be adjusted for different zones, allowing precise control over where and how the anti-ballistic fluid is applied without requiring uniform high precision across the entire window surface.
3Reliability
If holes are drilled in the window or frame for fluid injection, then anti-ballistic properties are added, but the structural integrity and aesthetics of the window may be compromised
Solution Approach 1:
Holes are drilled only in the window frame rather than the glass panes themselves, and only at specific locations where injection is needed. This localized approach minimizes the impact on overall structural integrity while still achieving the anti-ballistic function. The frame holes are then sealed, restoring the frame's structural continuity.
Solution Approach 2:
The drilling and sealing process is performed beforehand to prepare the window for anti-ballistic fluid injection. By completing the hole-drilling and sealing operations before final assembly or use, any potential structural weaknesses are addressed in advance, and the sealed holes restore the frame's integrity before the window is put into service.
4Reliability
If existing windows are replaced with anti-ballistic windows, then ballistic protection is improved, but the loss of existing window features and increased cost occur
Solution Approach 1:
The anti-ballistic fluid is merged with the existing window structure by injecting it into the gaps between panes. This combines the protective function with the existing aesthetic and functional features of the window, such as the gap insulation properties and the original pane configuration, creating a multi-functional window system without replacement.
Solution Approach 2:
The retrofitted window achieves multiple functions simultaneously: the original window provides aesthetic and basic insulating functions, while the injected anti-ballistic fluid adds protective functionality. The existing gap space serves both its original insulation purpose and as a container for the anti-ballistic material, maximizing the utility of the existing structure.
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 method effectively converts existing multiple pane windows into anti-ballistic windows without replacement, providing improved protection against ballistic projectiles while maintaining transparency and allowing for optional tinting capabilities.
Implementation Method 1
pumping a fluid to add anti-ballistic properties to the installed window through the one or more holes into a gap between panes of transparent material
Implementation Method 2
vibrating the installed window to enhance settling of the fluid into the gap between panes of transparent material
Data Source
AI summary
A system and method for retrofitting or otherwise improving installed windows to provide anti-ballistic properties to the existing windows by using a portable system for filling gaps in the windows with an anti-ballistic material that may or may not be cured. Also provided are different optional structural additions to the window that can be installed to improve the anti-ballistic properties of the window.