LFRT Window Well with Variable Ribs and Thickness
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Solution Overview
Problem
Traditional window wells are heavy, expensive, prone to damage, and lack durability and aesthetic appeal, with metal options being costly and prone to corrosion, while plastic alternatives sacrifice strength for aesthetics.
Innovation Solution
The development of lightweight and durable window wells made from long fiber reinforced thermoplastic materials, featuring omnidirectional glass fibers, varying wall thickness, and a manufacturing process involving heating and compression to create a U-shaped body with ribs and planar flanges, allowing for improved strength, aesthetics, and modular repair options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal window wells are used, then strength and durability are improved, but weight and transportation cost increase
Solution Approach 1:
The patent uses composite materials (plastic with fiber reinforcement) to create a window well that combines the strength characteristics of metal with the weight advantages of plastic. The composite structure allows the window well to maintain structural integrity while being significantly lighter than traditional metal window wells.
2Strength
If metal window wells are used, then strength is improved, but ease of manufacture and repairability worsen
Solution Approach 1:
The patent divides the window well into modular segments that can be independently replaced. When damage occurs, only the affected segment needs to be removed and replaced, rather than replacing the entire window well structure as would be necessary with traditional metal window wells.
3Weight of moving object
If plastic window wells are used, then weight is reduced, but strength and durability worsen
Solution Approach 1:
The patent employs fiber-reinforced plastic composite materials that combine the light weight of plastic with the strength of embedded fibers. This composite approach allows the window well to achieve metal-level strength while maintaining the weight and corrosion resistance advantages of plastic materials.
4Strength
If metal window wells are used, then strength is improved, but aesthetic appearance and resistance to corrosion worsen
Solution Approach 1:
The patent uses plastic-based composite materials that inherently resist corrosion and rust, eliminating the corrosion problems associated with metal window wells. The fiber reinforcement provides the necessary strength while the plastic matrix provides corrosion resistance, combining both advantages in a single material system.
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 results in window wells that are resistant to damage and degradation, offer improved aesthetics, reduce transportation costs, and enable efficient repair without full replacement, while maintaining strength and durability.
Implementation Method 1
heating a fiber reinforced thermoplastic sheet to more than 250° F.
Implementation Method 2
compressing the fiber reinforced thermoplastic sheet within the mold with a pressure of greater than 200 psi
Data Source
AI summary
A lightweight and durable window well is composed of a long fiber reinforced thermoplastic (LFRT). The lightweight and durable window well has at least some fibers that are omnidirectional relative to the other fibers in the thermoplastic. Additionally, at least some fibers of the LFRT have a length greater than 40 mm. The window well also has a body having a plurality of ribs interposed between a plurality of wall surface portions. Additionally, each rib is positioned between two different wall surface portions and is defined by a variable height and a variable depth. Furthermore, the wall surface portions have a variable thickness that varies from a minimal thickness of less than 3 mm to a maximum thickness of greater than 5 mm, with the wall surface being thicker near the ribs than at portions furthest from the ribs in the wall surface.