Drain Coupler Compressible Seal for Leak-Safe Floor Drain Alignment
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Solution Overview
Problem
Current methods for bonding metallic floor drains to polymeric drainage systems are unreliable, often resulting in leaks due to the difficulty in securing the joint, especially when the polymeric tail fitting is bonded below the subfloor surface, making it hard to ensure proper alignment and sealing.
Innovation Solution
A drain coupler with a pliable seal and removable cap design that allows for secure alignment and water-tight sealing of metallic throat sections with polymeric components, enabling easy installation and adjustment without direct visibility of the coupling joint, using a cap that temporarily covers the upper opening to facilitate the insertion of the metallic throat section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a physical clamp coupler is used to attach metallic drain to polymeric tail fitting, then the two dissimilar materials can be securely attached, but the joint becomes complex and difficult to ensure proper alignment and sealing
Solution Approach 1:
The patent introduces a coupler body as an intermediary component that receives both the metallic drain throat and polymeric tail fitting. This mediator component simplifies the coupling process by providing a single receptacle that accommodates both dissimilar materials, eliminating the need for complex external clamps and alignment procedures.
Solution Approach 2:
The pliable seal material changes its physical parameters (compressibility, elasticity) to adapt to the metallic throat section. The seal can be compressed during installation and then elastic recovery maintains constant sealing pressure, accommodating thermal expansion and contraction of the metallic components while maintaining a reliable seal.
2Reliability
If the polymeric tail fitting is bonded below the subfloor surface, then the drainage system can be securely connected, but it becomes difficult to ensure proper alignment and sealing
Solution Approach 1:
The coupler body with pre-installed pliable seal is positioned and temporarily secured with a cap before the metallic throat section is inserted. This preliminary setup ensures proper alignment is established in advance, allowing the metallic drain to be accurately aligned with the polymeric tail fitting that extends below the subfloor, eliminating alignment difficulties during the bonding process.
Solution Approach 2:
The patent replaces the need for mechanical alignment tools and visual inspection methods with a self-aligning pliable seal system. The compressible seal automatically conforms to the metallic throat section, providing self-alignment and sealing without requiring direct visibility or complex mechanical alignment procedures, even when working below the subfloor surface.
3Ease of operation
If a removable cap design is used to cover the upper opening, then the installation process is simplified and adjustment is enabled, but the device structure becomes more complex
Solution Approach 1:
The coupler assembly is segmented into distinct functional components: the coupler body, the removable cap, and the pliable seal. This segmentation allows the cap to be temporarily removed during installation for inserting the metallic throat section, then reattached to provide protection and finalize the assembly. The simple segmentation adds minimal structural complexity while dramatically improving ease of installation and adjustment.
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
Ensures a reliable, water-tight seal between metallic and polymeric components, preventing leaks and allowing for proper installation even in confined spaces, reducing the risk of damage from backflow pressure and simplifying the installation process.
Implementation Method 1
a pliable seal carried by or adjacent the upper opening; the pliable seal can be operable to form a water-tight seal about an exterior of a metallic throat section of a drain
Data Source
AI summary
A drain coupler includes a drain coupler body having a lower opening and an upper opening. A pliable seal is carried by or adjacent the upper opening, the pliable seal operable to form a water-tight seal about an exterior of a metallic throat section of a drain. Coupler engagement structure is carried by the drain coupler adjacent the upper opening of the drain coupler body. Cap engagement structure is carried by a cap. The cap engagement structure and the coupler engagement structure cooperatively enable removable engagement of the cap over the upper opening of the drain coupler body to temporarily cover the upper opening of the drain coupler. The cap is removable to allow insertion of the metallic throat section in the pliable seal.