Removable Drain Trap Assembly for Easy Cleaning and Inspection

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Solution Overview

Problem

Traditional plumbing drain traps are difficult to clean, obstruct fluid flow with large objects, and lack easy inspection, leading to slow drainage and difficulty in identifying obstructions.

Innovation Solution

A drain trap assembly with a removable access fitting and integrated inlet and outlet pipes, allowing easy installation, service, and replacement, featuring a transparent access fitting for inspection and a design that prevents gas entry while allowing free fluid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If traditional S-type or P-type traps are used to create a gas-obstructing compartment, then sewer gases are blocked from entering the basin, but cleaning the trap requires removal of the whole trap and often necessitates the use of tools

Engineering Contradiction:
Improvesewer gas blockingVSAvoidcleaning ease
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The trap assembly is divided into separate components: a removable access fitting that can be detached from the trap body. This segmentation allows the access fitting to be removed for cleaning purposes without needing to remove the entire trap assembly, thereby maintaining gas blocking functionality while improving cleaning ease.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If traditional traps are designed without quick clean-out provisions, then the gas-obstructing compartment is maintained, but cleaning requires removal of the whole trap

Engineering Contradiction:
Improvegas obstructionVSAvoidclean-out structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The trap assembly is segmented into a trap body and a removable access fitting. This segmentation adds a simple clean-out provision without complicating the overall gas obstruction function, as the access fitting is designed to be easily removable for maintenance while maintaining the sealed gas barrier when attached.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If large objects are introduced into traditional traps, then the trap structure remains simple, but the flow of fluids is significantly obstructed resulting in slow upstream drainage

Engineering Contradiction:
Improvetrap structureVSAvoiddrainage flow rate
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The access fitting is designed to be removable, allowing dynamic adjustment of the trap configuration. When removed, it provides a wide opening for introducing large objects without obstructing the trap's internal flow path, thereby maintaining high drainage flow rates while keeping the trap structure relatively simple.

Inventive Principle:
Principle #15Dynamics

4Device complexity

If traditional traps are used without easy inspection provisions, then the trap assembly is simple, but it is difficult to determine if and/or where an obstruction is present

Engineering Contradiction:
Improveinspection structureVSAvoidobstruction detection
Core Design Contradiction:
Device complexityVSDifficulty of detecting and measuring

Solution Approach 1:

The access fitting is made of transparent or translucent material, allowing visual inspection of the trap interior without disassembly. This enables easy detection of obstructions while adding minimal structural complexity, as the transparent material simply replaces the traditional opaque trap body or access cover.

Inventive Principle:
Principle #32Color changes

5Ease of operation

If the access fitting is removably attached to the main body, then easy cleaning and inspection are enabled, but the connection structure becomes more complex

Engineering Contradiction:
Improveaccessibility for cleaningVSAvoidconnection structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The trap assembly is segmented into a removable access fitting and a main body, connected through a simple threaded or snap-fit interface. This segmentation enables easy removal for cleaning and inspection while keeping the connection structure straightforward and minimal, avoiding excessive complexity.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12516512B2Drain trap assembly
Publication Date: 2026.01.06 SULECKI ZEBBY
  • US12516512B2 patent drawing
  • US12516512B2 patent drawing
  • US12516512B2 patent drawing

AI summary

A drain trap assembly comprises an upper housing and an access fitting removably attached thereto. The upper housing includes a main body defining an open bottom end, an inlet pipe extending through the main body in a vertical direction and exiting through the open bottom end, and an outlet pipe extending from an annular sidewall of the main body. The access fitting is removably attached to the main body for selectively covering the open bottom end and defines a fluid reservoir in communication with the inlet pipe and the outlet pipe.