Universal Drain Closure Gasket for Variable Drain Shoe Sizes
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Solution Overview
Problem
Existing drain closure systems for bathtubs and sinks lack versatility in accommodating varying tub drain shoe sizes and depths, often requiring multiple o-rings or seals to fit different drain diameters, and do not provide a universal fitting solution.
Innovation Solution
A gasket seal with a unique construction featuring concentric annular platforms and a vertical top portion that allows for adjustable compression and sealing, along with a universal gasket seal design that fits various drain diameters, accommodating non-standardized tub drain shoes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple o-rings or seals are used to fit different drain diameters, then compatibility with various drain sizes is improved, but device complexity increases
Solution Approach 1:
The gasket seal is designed with a universal structure that can accommodate multiple drain diameters (1.25 inches, 1.5 inches, and non-standard sizes) through a single component. The gasket features an inner diameter of approximately 1.375 inches and an outer diameter of approximately 1.625 inches, allowing it to fit various drain shoe sizes without requiring multiple specialized seals.
Solution Approach 2:
The patent combines multiple sealing functions into a single gasket seal that performs both sealing and positioning functions. The gasket integrates features that allow it to work with different drain configurations, effectively merging what would traditionally require separate components into one universal solution.
2Adaptability or versatility
If a universal gasket seal design is used to fit various drain diameters, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The gasket seal incorporates specific dimensional characteristics at different locations to achieve universal compatibility. The inner diameter of approximately 1.375 inches and outer diameter of approximately 1.625 inches are specifically engineered to provide the necessary clearance and sealing surface for various drain sizes, with the angled surface providing localized adaptation to different configurations.
Solution Approach 2:
The gasket is designed with specific dimensional parameters (inner diameter ≈1.375 inches, outer diameter ≈1.625 inches) that create a universal fit range. These parameter choices allow the gasket to accommodate non-standardized tub drain shoes while maintaining manufacturing feasibility through conventional tolerances.
3Reliability
If the gasket seal is compressed to ensure a tight seal, then sealing performance is improved, but the force required increases
Solution Approach 1:
The gasket seal incorporates an angled surface that distributes compression forces more effectively across the sealing interface. This geometric feature allows the gasket to deform and conform to the drain shoe surface, creating a tight seal with reduced compression force compared to a flat gasket design.
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 provides a universal fit for different drain sizes, ensuring a tight seal and easy operation, reducing the need for multiple seals and enhancing compatibility with diverse drain configurations.
Implementation Method 1
The gasket seal is compressed to ensure a tight seal
Implementation Method 2
a gasket or seal (referred to herein as a gasket seal 1210) may be provided as part of an assembly of a drain closure
Data Source
AI summary
An exemplary embodiment, among others, of the present disclosure is directed to a drain closure assembly. A head of the drain closure assembly is fastened to a top end of a stem, wherein a bottom end of the stem is insertable in a drain shoe; and a gasket is fastened around an outer cylinder of the stem below the head. The gasket comprises an upper outer portion and a lower outer portion that each meet at a line that defines a hinge at which the gasket is able to bend, wherein the lower outer portion features a sloped surface from a bottom edge of a rim of the gasket to the line at a top of the lower outer portion, wherein the upper outer portion has a right circular cylinder shape.