Polycarbonate Window Insert for Lightweight Retrofit Insulation

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Solution Overview

Problem

Conventional multi-pane glass windows are heavy, increasing the weight of frames and sashes, requiring heavier mounting hardware and often necessitating architectural redesigns for retrofit installations, while also being inefficient in energy and sound insulation.

Innovation Solution

A multi-pane window insert made of polycarbonate resin thermoplastic material with an air-tight gasket, featuring a spacer frame and flexible gasket for installation into existing window frames, providing sound and thermal insulation with reduced weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If conventional multi-pane glass windows are used to improve insulation, then energy and sound insulation are improved, but weight increases significantly

Engineering Contradiction:

Improveenergy insulationVSAvoidwindow weight

Core Design Contradiction:

Loss of energyVSWeight of stationary object

Solution Approach 1:

The patent changes the material parameter from glass to polycarbonate resin, which has a lower density and weight while maintaining or improving insulation properties. This parameter substitution directly addresses the contradiction between insulation performance and weight.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite construction by combining polycarbonate resin panes with a spacer frame and gasket system. This composite approach allows optimization of individual components for their specific functions while achieving overall lightweight design with improved insulation.

Inventive Principle:

Principle #40Composite materials

2Loss of energy

If thick glass panes are used to improve insulation, then energy and sound insulation are improved, but weight and structural requirements increase

Engineering Contradiction:

Improveenergy insulationVSAvoidstructural strength requirements

Core Design Contradiction:

Loss of energyVSStrength

Solution Approach 1:

The patent changes the material from glass to polycarbonate resin, which provides superior impact resistance and structural strength at lower thicknesses. This allows the window to meet or exceed structural requirements while using less material and achieving better insulation.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a removable insert design that can be easily installed and removed, replacing the need for permanent, heavy glass window structures. This approach prioritizes functional performance over permanent structural integration.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Loss of energy

If multi-pane glass windows are installed in existing buildings, then insulation is improved, but architectural redesign is required due to weight restrictions

Engineering Contradiction:

Improveenergy insulationVSAvoidretrofit compatibility

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The patent divides the window system into a separate insert component that can be independently manufactured and installed within existing window frames. This segmentation allows the insulating function to be added without modifying the original structural framework, enabling retrofit installations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a spacer frame and gasket system as intermediary components between the polycarbonate panes and the existing window frame. These intermediaries facilitate the integration of the lightweight insert into existing architectural structures without requiring structural modifications.

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

The insert significantly reduces weight, improves energy efficiency, and enhances impact resistance, allowing for easy retrofitting without architectural changes, while maintaining or improving insulation and soundproofing properties.

Implementation Method 1

a gasket configured to provide a seal for the multi-pane window when installed in a window frame

Methodology Applied

Scientific EffectSealing:

Implementation Method 2

A gas, such as dry air, argon, or nitrogen, can be utilized to fill the space between the two panes to provide both a temperature and sound insulating property for the assembly

Methodology Applied

Scientific EffectThermal Insulation: Thermal Insulation

Implementation Method 3

The insert significantly reduces weight, improves energy efficiency, and enhances impact resistance

Methodology Applied

Scientific EffectImpact Resistance:

Data Source

PatentUS12523087B1Apparatus and components for multi-pane window assembly and window insert

Publication Date: 2026.01.13 INTELLIGENT ENERGY GRP LLC

AI summary

According to some implementations, a multi-pane window assembly and a multi-pane window insert are described. The multi-pane window insert includes a first pane formed of polycarbonate resin thermoplastic material and a second pane formed of polycarbonate resin thermoplastic material that is separated from the first pane by a spacer. A planar surface of each the first pane and the second pane are oriented substantially parallel to one another. A framing structure is provided for housing the plural panes and a gasket is provided for sealing the multi-pane window to a frame on installation. The multi-pane window insert is configured to be installed on an interior surface of a pre-existing window frame to improve the thermal, acoustic, and light transmittance properties of a multi-pane window assembly.