Linear Shower Drain Body With Angled Channel for Leak-Safe Tiling
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Solution Overview
Problem
Existing shower trench drains face challenges with complex base configurations, intersecting planes, and the need for 100% waterproof integrity, which leads to installation difficulties, leak issues, and high manufacturing costs due to welding and constant-thickness wall designs.
Innovation Solution
A shower trench drain apparatus featuring a polymeric material trench body with a flat bottom and integrally-formed angled drain channel, a waterproof membrane, and a clamp ring, along with a grate adjustment mechanism, allowing for easy installation and reduced leak risks without welding, and accommodating various tile thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If trench drain bodies are made with constant wall thickness for manufacturing simplicity, then manufacturing is easier, but the bottom of the drain body ends up on an angle to the drain opening, creating installation difficulties
Solution Approach 1:
The trench drain body is divided into distinct functional zones: a constant-thickness sidewall portion for manufacturing simplicity and an integrally-formed angled floor portion for proper drainage slope. This segmentation allows each zone to optimize its geometry for its specific function while being manufactured as a single piece.
Solution Approach 2:
Different portions of the trench drain body have different geometric properties: the sidewalls maintain constant thickness for easy manufacturing, while the floor portion is intentionally angled to provide the required drainage slope. This local variation in geometry resolves the contradiction between manufacturing ease and installation performance.
2Adaptability or versatility
If complex base configurations with intersecting planes are used to accommodate larger shower footprints, then larger tile formats can be used, but the changes in plane create aesthetic problems and leak risks at intersection lines
Solution Approach 1:
The trench drain system removes the problematic intersecting plane configurations from the shower base by introducing a linear trench drain that eliminates the need for multiple converging quadrants. The drain channel runs linearly along the perimeter, allowing the base to be formed as a single continuous plane suitable for large-format tile installation without intersection lines where leaks could occur.
3Adaptability or versatility
If welding is used to assemble trench drain components to achieve various sizes, then manufacturing flexibility is improved, but welding introduces leak risks and increases manufacturing cost and time
Solution Approach 1:
The trench drain body is manufactured as a single integrally-formed piece rather than assembling multiple components through welding. This merging of components eliminates weld joints that are potential leak sources, while still achieving size variety through direct manufacturing of different dimensions from the block material.
Solution Approach 2:
Instead of creating multiple physical prototypes or test assemblies to verify weld integrity, the design uses a proven integrally-formed construction method that has been validated to be leak-free, eliminating the need for extensive quality control testing associated with welded assemblies.
4Reliability
If multiple quality control inspections of welds are performed to detect leaks, then leak detection capability is improved, but inspection time and manufacturing expense increase considerably
Solution Approach 1:
The design converts the potential harm of weld failures into a benefit by eliminating welding entirely from the construction process. The integrally-formed trench drain body has no weld joints, transforming the quality control challenge of detecting weld leaks into a non-issue, as the monolithic construction inherently prevents this failure mode.
Data Source
AI summary
A shower trench drain apparatus includes a shower trench drain body of polymeric material having an integrally-formed drain channel with angled bottom surface and drain opening or openings, a waterproof membrane over the drain body, a clamp ring retaining the membrane to the drain body, and a grate adjustably retained to the drain body by a height adjustment mechanism. The trench drain body formed from a block of material such as PVC or ABS, which are compatible with approved plumbing materials and codes. The block has a flat bottom adapted for horizontal support during installation and includes integrally-formed features facilitating adjustment during installation while minimizing components and separate parts and simplicity of installation.