Mulled Window Mull Clip Fastening System
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Solution Overview
Problem
Traditional mullion bar systems for installing mulled windows are time-consuming, require specialized tools and expertise, and may not provide optimal structural support, leading to increased installation costs and reduced efficiency and durability of the windows.
Innovation Solution
A pre-mulled window apparatus and method that includes a mullion tube with window units pre-attached, and mull clips inserted into the mullion tube ends for easy installation by driving screws through the clips into structural members, simplifying the installation process and providing consistent results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional mullion bar systems are used for installing mulled windows, then the windows can be installed, but the installation process becomes time-consuming and requires specialized tools and expertise
Solution Approach 1:
The mullion bar is divided into separate components: the mullion bar itself and detachable mull clips. The mull clips can be removed and replaced with simpler installation brackets, breaking down the complex traditional system into manageable segments that are easier to install.
Solution Approach 2:
The mull clips are extracted from the mullion bar and made as separate, removable components. This allows the mullion bar to be installed first, then the clips to be attached later, simplifying the overall installation process by separating complex fastening elements from the structural component.
2Ease of manufacture
If traditional mullion bar systems are used, then windows can be joined, but specialized tools and expertise are required which increase installation costs
Solution Approach 1:
The mull clips are designed as inexpensive, disposable fastening components that can be easily replaced. These simple clips eliminate the need for expensive specialized tools by providing a straightforward screw-fastening mechanism that any installer can use with basic tools.
3Strength
If traditional mullion bar systems are used, then windows can be installed, but optimal structural support is not provided
Solution Approach 1:
The system combines the mullion bar with integrated mull clips that feature both structural and fastening functions. The clips are designed with sufficient thickness and material strength to provide optimal structural support while maintaining simplicity in design, avoiding the need for complex additional reinforcement elements.
Data Source
AI summary
An apparatus and a method for mulled window installation are described. An example window apparatus includes a mullion tube, a first window unit attached to a first side of the mullion tube, a second window unit attached to a second side of the mullion tube, a first mull clip disposed inside a first hollow end of the mullion tube, and a second mull clip disposed inside a second hollow end of the mullion tube. The first mull clip defines a first hole configured to receive a first screw through a first cutout in the mullion tube, and the second mull clip defines a second hole configured to receive a second screw through a second cutout in the mullion tube.