Composite Windowsill Assembly with Thermal Break and Insert Bracket
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Solution Overview
Problem
Existing structural windowsill assemblies face challenges in providing adequate support and insulation for continuous insulation punched openings without relying on structural steel angles, combustible wood, or steel light gauge framing, while also ensuring water and vapor proofing, fire resistance, and the ability to carry loads without the need for through-fasteners or clips.
Innovation Solution
A windowsill assembly comprising a beam member with elongated fibers embedded in a matrix, coupled to a support member via an insert bracket that is either metal or fiber-reinforced plastic, allowing for secure attachment without through-fasteners, and featuring a design that is thermally broken and universal in application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional structural steel angles, combustible wood, or steel light gauge framing are used to support spanning structures, then structural support is provided, but fire resistance, water proofing, vapor proofing, and thermal insulation are compromised
Solution Approach 1:
The patent employs composite materials including fiber-reinforced polymers and non-combustible materials to create a windowsill assembly that simultaneously achieves structural strength, fire resistance, and water proofing. The composite construction integrates multiple material properties within a single assembly, eliminating the need for separate combustible or fire-vulnerable materials.
Solution Approach 2:
The invention changes the material parameters by selecting non-combustible materials with specific thermal and moisture-resistant properties. The windowsill assembly is designed with materials that have high fire resistance ratings, low thermal conductivity for insulation, and impermeability to water and vapor, fundamentally altering the parameter set compared to traditional materials.
2Strength
If through-fasteners or clips are used to attach windowsill assemblies to support members, then secure attachment is achieved, but the assembly requires sequential installation steps and cannot be installed after insulation and cladding
Solution Approach 1:
The windowsill assembly is divided into modular components that can be independently positioned and then integrated. This segmentation allows the assembly to be installed in different sequences and enables installation after insulation and cladding are in place, as the modular parts can be maneuvered into position without requiring through-fasteners that would penetrate existing structures.
Solution Approach 2:
The patent introduces intermediary attachment mechanisms that do not require direct penetration through the entire assembly and support structure. These intermediaries allow for secure attachment while maintaining the ability to install the assembly in various sequences, including after insulation and cladding are installed.
3Strength
If flange windows or strap tie backs are required for proper installation, then structural integrity is maintained, but the installation process becomes more complex and time-consuming
Solution Approach 1:
The patent merges the structural support function, attachment mechanism, and insulation elements into a single integrated windowsill assembly. This consolidation eliminates the need for separate components like flange windows or strap tie backs, as the integrated design inherently provides structural integrity while simplifying the installation process to a single operation.
Solution Approach 2:
The windowsill assembly is designed as a universal, multi-functional component that simultaneously provides structural support, thermal insulation, water proofing, and vapor proofing. This multi-functionality eliminates the need for multiple specialized components, reducing installation complexity while maintaining all necessary structural and protective functions.
4Ease of manufacture
If combustible materials are used for windowsill assemblies, then ease of manufacture and installation is improved, but fire resistance and insurance requirements are compromised
Solution Approach 1:
The patent utilizes composite materials that combine the ease of manufacturing characteristics of polymers with the fire resistance of non-combustible reinforcements. The fiber-reinforced polymer composite can be manufactured using standard composite fabrication processes while achieving fire resistance ratings that meet or exceed building code requirements, eliminating the need for combustible materials.
Data Source
AI summary
A windowsill assembly includes a beam member and an insert bracket. The beam member includes a first leg and a second leg, the first leg meeting the second leg at a joining region at proximal ends of the first leg and the second leg. The insert bracket includes a first portion and a second portion that are substantially perpendicular to each other to substantially match an angle between the first leg and the second leg of the beam member. The insert bracket couples the beam member to a support member.