Glass Lite Retention Venting for Extreme Weather Water Control

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Solution Overview

Problem

Glass lites in fenestration panels are prone to water penetration during extreme weather events due to pressure differentials, especially when conventional airtight seals on the higher pressure side deteriorate, allowing water to be drawn into the lower pressure side.

Innovation Solution

A glass lite retention system with a vented interface on the higher pressure side and an airtight seal on the lower pressure side, allowing pressure equalization and controlled water passage through vents on the exterior side.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional airtight seals are provided on the higher pressure side to prevent water penetration, then water resistance is improved, but the seals deteriorate over time due to environmental factors and pressure differentials

Engineering Contradiction:

Improvewater resistanceVSAvoidseal durability

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The seal system is divided into two functional zones: a vented interface on the high-pressure exterior side that allows pressure equalization and water passage, and an airtight seal on the low-pressure interior side that prevents water infiltration. This segmentation allows each zone to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of providing a continuous airtight seal on the high-pressure side where water penetration is most likely to occur, the invention inverts the approach by providing the airtight seal on the low-pressure interior side. The high-pressure side is equipped with vents that allow controlled water passage, reversing the conventional wisdom about where sealing is most critical.

Inventive Principle:

Principle #13The other way round (Inversion)

2Object-affected harmful factors

If airtight seals are provided on the higher pressure side to prevent water entry, then water infiltration is reduced, but pressure differentials cause water to be drawn through compromised seals to the lower pressure side

Engineering Contradiction:

Improvewater infiltrationVSAvoidpressure differential

Core Design Contradiction:

Object-affected harmful factorsVSStress or pressure

Solution Approach 1:

The vented interface acts as an intermediary element between the high-pressure exterior environment and the low-pressure interior space. It allows pressure equalization and controlled water passage, preventing the direct transmission of pressure differentials that would otherwise force water through compromised seals to the interior side.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If conventional seals are used without ventilation, then manufacturing is simpler, but water management capability is reduced and seal degradation accelerates

Engineering Contradiction:

Improveseal installationVSAvoidwater management performance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

Different regions of the seal system are given different properties: the vented interface on the exterior side is designed to be permeable to water and compressible for pressure equalization, while the interior side seal is designed to be airtight. This local differentiation of properties allows the system to achieve superior water management while maintaining reasonable manufacturing simplicity.

Inventive Principle:

Principle #3Local quality

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

This configuration minimizes water infiltration by equalizing pressure and facilitating water exit through vents, providing robust water management and reducing seal degradation issues.

Implementation Method 1

providing a vented interface on higher pressure/exterior side of a glass lite retention system while providing an airtight seal on a lower pressure/interior side of the glass lite retention system allows for an equalization of pressure within the interface between the glass lite and the fenestration panel with the ambient atmosphere on the higher pressure/exterior side of the fenestration panel

Methodology Applied

Scientific EffectPressure equalization: Pressure Gradient

Implementation Method 2

providing an airtight seal on a lower pressure/interior side of a fenestration panel and glass lite while providing a vented connection between a frame retaining a glass lite in a fenestration panel opening on a higher pressure/exterior side of the fenestration unit may limit water infiltration around the glass lite by providing improved control over the pressure differentials experienced in the junction between the glass lite and the fenestration panel opening

Methodology Applied

Scientific EffectPressure differential blocking: Pressure Gradient

Implementation Method 3

The vent is configured to pass liquid water through the second frame-panel junction under the force of gravity

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS12378812B1Glass lite retention systems and methods for improved performance

Publication Date: 2025.08.05 ANDERSEN CORPORATION

AI summary

Glass lite retention systems and related methods are described herein. The glass lite retention systems and methods of resisting water penetration through the junctions between the glass lites and the openings in the fenestration panels when the fenestration panels are subjected to extreme weather events.